Mechanism of amyloid fibril formation triggered by breakdown of supersaturation

Keiichi Yamaguchi, Kichitaro Nakajima, Hirotsugu Ogi, Yuji Goto

npj Biosensing　Vol. 2　No. 1　2025/02/03　Research paper (scientific journal)

Peristaltic pump-triggered amyloid formation suggests shear stresses are in vivo risks for amyloid nucleation

Yuji Goto, Tomoki Ota, Wenlou Yuan, Ikuko Yumen, Keiichi Yamaguchi, Hirokazu Matsuda, Suguru Yamamoto, Hirotsugu Ogi

npj Biosensing　Vol. 2　No. 1　2025/01/31　Research paper (scientific journal)

Time course observation of cross-sectional shape of iPS cell colony using ultrasound spectroscopic imaging

Natsumi Fujiwara, Takaki Matsumoto, Akira Nagakubo, Shao Ying Tan, Masahiro Kino-oka, Hirotsugu Ogi

npj Biological Physics and Mechanics　Vol. 2　No. 1　2025/01/10　Research paper (scientific journal)

Sensitivity enhancement of hydrogen-gas sensor by sub-nm Au on Pd surface of a wireless quartz resonator

Akira NAGAKUBO, Tokiya Matsukura, Hirotsugu OGI

Japanese Journal of Applied Physics　2024/07/10　Research paper (scientific journal)

Surface Modification of Ultrasonic Cavitation by Surfactants Improves Detection Sensitivity of α-Synuclein Amyloid Seeds

Kichitaro Nakajima, Tomoki Ota, Hajime Toda, Keiichi Yamaguchi, Yuji Goto, Hirotsugu Ogi

ACS Chemical Neuroscience　2024/03/28　Research paper (scientific journal)

Ultrasensitive wireless quartz-crystal-microbalance (QCM) bio/gas sensors

Hirotsugu OGI

Japanese Journal of Applied Physics　2024/03/06　Research paper (scientific journal)

Development of a focused-ultrasound spectroscopic-imaging system combined with optical imaging for applying mechanical stimulation on living cells and possibility of selective stimulation for nucleus

Natsumi Fujiwara, Shao Ying Tan, Takaki Matsumoto, Akira NAGAKUBO, Masahiro Kino-oka, Hirotsugu OGI

Japanese Journal of Applied Physics　2024/02/05　Research paper (scientific journal)

Measurement of nonlinear three-wave interaction using shear-vertical-wave point-focusing electromagnetic acoustic transducers

Takashi Takishita, Hiroyuki Takamatsu, Hirotsugu OGI

Japanese Journal of Applied Physics　2024/01/26　Research paper (scientific journal)

<scp>MEMS‐Based</scp> Ultra‐High Frequency Wireless 10 × 10 <scp>QCM</scp> Sensor Array for Biochemical Sensing Applications

Fumihito Kato, Junki Shinohara, Manabu Yoshino, Manabu Suzuki, Hirotsugu Ogi

IEEJ Transactions on Electrical and Electronic Engineering　2024/01/09　Research paper (scientific journal)

GHz surface-wave phononic crystal biosensor using a Fano resonance at the bandgap edge

Wenlou Yuan, Akira NAGAKUBO, Oliver Wright, Hirotsugu OGI

Japanese Journal of Applied Physics　2023/12/28　Research paper (scientific journal)

Spectral analysis of amplitude and phase echoes in picosecond ultrasonics for strain pulse shape determination

Takehiro Tachizaki, Jeremy J. Baumberg, Osamu Matsuda, Motonobu Tomoda, Hirotsugu Ogi, Oliver B. Wright

Photoacoustics　Vol. 34　p. 100566-100566　2023/12　Research paper (scientific journal)

2E1-4 Development of a focused ultrasound spectroscopic imaging system combined with optical imaging for applying mechanical stimulation on living cells

Fujiwara Natsumi, Matsumoto Takaki, Ying Tan. Shao, Nagakubo Akira, Nakajima Kichitaro, Kino-oka Masahiro, Ogi Hirotsugu

Proceedings of Symposium on Ultrasonic Electronics　Vol. 44　2023/11/13

Elastic constants of GaN grown by oxide-vapor-phase-epitaxy method

Hiroki Fukuda, Akira NAGAKUBO, Shigeyoshi Usami, Masayuki Imanishi, Yusuke Mori, Hirotsugu OGI

Applied Physics Express　2023/11/10　Research paper (scientific journal)

Deep-Learning-Assisted Resonant Ultrasound Spectroscopy for Cubic Solids

Hiroki Fukuda, Akira Nagakubo, Oliver B. Wright, Kazuhiro Kyotani, Hirotsugu Ogi

Physical Review Applied　Vol. 20　No. 3　2023/09/21　Research paper (scientific journal)

Ultrastiff Amyloid-Fibril Network of α-Synuclein Formed by Surface Seeding Reaction Confirmed by Multichannel Electrodeless Quartz-Crystal-Microbalance Biosensor

Lianjie Zhou, Touko Hajiri, Kichitaro Nakajima, César Aguirre, Kensuke Ikenaka, Hideki Mochizuki, Keiichi Yamaguchi, Yuji Goto, Hirotsugu Ogi

ACS Sensors　2023/06/26　Research paper (scientific journal)

Mass-Fabrication Scheme of Highly Sensitive Wireless Electrodeless MEMS QCM Biosensor with Antennas on Inner Walls of Microchannel

Lianjie Zhou, Fumihito Kato, Masumi Iijima, Tomoyuki Nonaka, Shun’ichi Kuroda, Hirotsugu Ogi

Analytical Chemistry　2023/03/24　Research paper (scientific journal)

Phosphatidylinositol-3,4,5-trisphosphate interacts with alpha-synuclein and initiates its aggregation and formation of Parkinson’s disease-related fibril polymorphism

Chi-Jing Choong, César Aguirre, Keita Kakuda, Goichi Beck, Hiroki Nakanishi, Yasuyoshi Kimura, Shuichi Shimma, Kei Nabekura, Makoto Hideshima, Junko Doi, Keiichi Yamaguchi, Kichitaro Nakajima, Tomoya Wadayama, Hideki Hayakawa, Kousuke Baba, Kotaro Ogawa, Toshihide Takeuchi, Shaymaa Mohamed Mohamed Badawy, Shigeo Murayama, Seiichi Nagano, Yuji Goto, Yohei Miyanoiri, Yoshitaka Nagai, Hideki Mochizuki, Kensuke Ikenaka

Acta Neuropathologica　Vol. 145　No. 5　p. 573-595　2023/03/20　Research paper (scientific journal)

High sensitivity biosensing scheme based on a GHz phononic crystal waveguide

Wenlou Yuan, Akira NAGAKUBO, Oliver Wright, Hirotsugu OGI

Japanese Journal of Applied Physics　Vol. 62　No. SJ　p. SJ1012-SJ1012　2023/01/13　Research paper (scientific journal)

3Pb2-4 Development of a high-frequency focused ultrasound system for applying noninvasively localized mechanical stimulation on cultured cells

Fujiwara Natsumi, Matsumoto Takaki, Nagakubo Akira, Kino-oka Masahiro, Ogi Hirotsugu

Proceedings of Symposium on Ultrasonic Electronics　Vol. 43　2022/11/07

Improvement of hydrogen detection sensitivity of palladium film by in-plane compressive plastic deformation and application to hydrogen gas sensor

Fumihito Kato, Hiroki Ato, Shoichi Ichikawa, Masahito Kimura, Taiki Hasegawa, Ryunosuke Ryuzaki, Noriyasu Masumoto, Manabu Suzuki, Hirotsugu OGI

Japanese Journal of Applied Physics　2022/10/21　Research paper (scientific journal)

Macromolecular crowding and supersaturation protect hemodialysis patients from the onset of dialysis-related amyloidosis

Kichitaro Nakajima, Keiichi Yamaguchi, Masahiro Noji, César Aguirre, Kensuke Ikenaka, Hideki Mochizuki, Lianjie Zhou, Hirotsugu Ogi, Toru Ito, Ichiei Narita, Fumitake Gejyo, Hironobu Naiki, Suguru Yamamoto, Yuji Goto

Nature Communications　Vol. 13　No. 1　2022/10/03　Research paper (scientific journal)

Theoretical Analysis on the Stability of 1-Pyrenebutanoic Acid Succinimidyl Ester Adsorbed on Graphene

Yasuhiro Oishi, Hirotsugu Ogi, Satoshi Hagiwara, Minoru Otani, Koichi Kusakabe

ACS Omega　Vol. 7　No. 35　p. 31120-31125　2022/09/06　Research paper (scientific journal)

The angular dependence of magnetization dynamics induced by a GHz range strain pulse

Kakeru Tojo, Akira Nagakubo, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 61　No. SG　p. SG1007-SG1007　2022/07/01　Research paper (scientific journal)

Determination of the electron trap level in Fe-doped GaN by phonon-assisted conduction phenomenon

Hiroki Fukuda, Akira NAGAKUBO, Shigeyoshi Usami, Masashi Ikeda, Masayuki Imanishi, Masashi Yoshimura, Yusuke MORI, Kanta Adachi, Hirotsugu OGI

Applied Physics Express　Vol. 15　No. 7　p. 071003-071003　2022/05/30　Research paper (scientific journal)

Variable repetition frequency asynchronous optical sampling method without a feedback loop

A. Nagakubo, K. Kanai, H. Tamura, A. Tange, H. Ogi

AIP Advances　Vol. 12　No. 4　p. 045323-045323　2022/04/01　Research paper (scientific journal)

Suppression of Brillouin oscillation in transparent free-standing diamond thin films in picosecond ultrasound

H. K. Weng, A. Nagakubo, H. Watanabe, H. Ogi

Applied Physics Letters　Vol. 120　No. 11　p. 112203-112203　2022/03/14　Research paper (scientific journal)

Restructuring in bimetallic core-shell nanoparticles: Real-time observation

Nobutomo Nakamura, Koji Matsuura, Akio Ishii, Hirotsugu Ogi

Physical Review B　Vol. 105　No. 12　2022/03/01　Research paper (scientific journal)

Conformational change in the monomeric alpha-synuclein imparts fibril polymorphs

Cesar Aguirre, Kensuke Ikenaka, Masatomo So, Takahiro Maruno, Keiichi Yamaguchi, Kichitaro Nakajima, Chi-Jing Choong, Kei Nabekura, Goichi Beck, Kentaro Tomii, Yu Yamamori, Junko Doi, Tomoyasu Matsubara, Maho Morishima, Keita Kakuda, Makoto Hideshima, Yasuyoshi Kimura, Seiichi Nagano, Kousuke Baba, Shigeo Murayama, Hirotsugu Ogi, Yoshitaka Nagai, Yasushi Kawata, Susumu Uchiyama, Yohei Miyanoiri, Yuji Goto, Hideki Mochizuki

bioRxiv　2022/02/10　Research paper (scientific journal)

Development of HANABI, an ultrasonication-forced amyloid fibril inducer

Yuji Goto, Kichitaro Nakajima, Keiichi Yamaguchi, Masatomo So, Kensuke Ikenaka, Hideki Mochizuki, Hirotsugu Ogi

Neurochemistry International　Vol. 153　p. 105270-105270　2022/02　Research paper (scientific journal)

Effect of interfacial damping on high-frequency surface wave resonance on a nanostrip-bonded substrate

Wenlou Yuan, Akira Nagakubo, Hirotsugu Ogi

JOURNAL OF APPLIED PHYSICS　Vol. 131　No. 1　p. 015103-015103　2022/01　Research paper (scientific journal)

Lattice thermal conductivity in isotope diamond asymmetric superlattices

Hsu Kai Weng, Akira NAGAKUBO, Hideyuki Watanabe, Hirotsugu OGI

Japanese Journal of Applied Physics　Vol. 61　No. SG　2021/12/14　Research paper (scientific journal)

Acceleration of amyloid fibril formation by multichannel sonochemical reactor

Kentaro Noi, Kichitaro Nakajima, Keiichi Yamaguchi, Masatomo So, Kensuke Ikenaka, Hideki Mochizuki, Yuji Goto, Hirotsugu OGI

Japanese Journal of Applied Physics　2021/12/08　Research paper (scientific journal)

Spontaneous nucleation on flat surface by depletion force in colloidal suspension

Nobutomo Nakamura, Yuto Sakamoto, Hirotsugu Ogi

Scientific Reports　Vol. 11　No. 1　2021/12　Research paper (scientific journal)

1J4-2 Ultrasound-spectroscopy imaging on human iPS cells for mechanobiology study

Fujiwara Natsumi, Matsumoto Takaki, Nagakubo Akira, Kino-oka Masahiro, Ogi Hirotsugu

Proceedings of Symposium on Ultrasonic Electronics　Vol. 42　2021/10/25

1Pa4-5 Accelerating amyloid fibril formation by multi-channel ultrasonic chemical reactor

Noi Kentaro, Nakajima Kichitaro, Yamaguchi Keiichi, So Masatomo, Ikenaka Kensuke, Mochizuki Hideki, Goto Yuji, Ogi Hirotugu

Proceedings of Symposium on Ultrasonic Electronics　Vol. 42　2021/10/25

Half-Time Heat Map Reveals Ultrasonic Effects on Morphology and Kinetics of Amyloidogenic Aggregation Reaction

Kichitaro Nakajima, Hajime Toda, Keiichi Yamaguchi, Masatomo So, Kensuke Ikenaka, Hideki Mochizuki, Yuji Goto, Hirotsugu Ogi

ACS Chemical Neuroscience　Vol. 12　No. 18　p. 3456-3466　2021/09/15　Research paper (scientific journal)

Phonon propagation in isotopic diamond superlattices

H. K. Weng, A. Nagakubo, H. Ogi, H. Watanabe

Physical Review B　Vol. 104　No. 5　2021/08/16　Research paper (scientific journal)

Disaggregation Behavior of Amyloid β Fibrils by Anthocyanins Studied by Total-Internal-Reflection-Fluorescence Microscopy Coupled with a Wireless Quartz-Crystal Microbalance Biosensor

Kentaro Noi, Kensuke Ikenaka, Hideki Mochizuki, Yuji Goto, Hirotsugu Ogi

Analytical Chemistry　Vol. 93　No. 32　p. 11176-11183　2021/08/05　Research paper (scientific journal)

Study on micropillar arrangement optimization of wireless-electrodeless quartz crystal microbalance sensor and application to a gas sensor

Fumihito Kato, Yu Sato, Hiroki Ato, Haruki Kuwabara, Yuto Kobayashi, Kensuke Nakamura, Noriyasu Masumoto, Hiroyuki Noguchi, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 60　No. SD　2021/07　Research paper (scientific journal)

Sensitive label-free immunoglobulin G detection using a MEMS quartz crystal microbalance biosensor with a 125 MHz wireless quartz resonator

Lianjie Zhou, Fumihito Kato, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 60　No. SD　p. SDDB03-SDDB03　2021/07/01　Research paper (scientific journal)

Elastic constant of dielectric nano-thin films using three-layer resonance studied by picosecond ultrasonics

Hiroki Fukuda, Akira Nagakubo, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 60　No. SD　p. SDDA05-SDDA05　2021/07/01　Research paper (scientific journal)

Multi-mode resistive spectroscopy for precisely controlling morphology of extremely narrow gap palladium nanocluster array

N. Nakamura, K. Kashiuchi, H. Ogi

Review of Scientific Instruments　Vol. 92　No. 6　p. 063901-063901　2021/06/01　Research paper (scientific journal)

Optimized sonoreactor for accelerative amyloid-fibril assays through enhancement of primary nucleation and fragmentation

Kichitaro Nakajima, Kentaro Noi, Keiichi Yamaguchi, Masatomo So, Kensuke Ikenaka, Hideki Mochizuki, Hirotsugu Ogi, Yuji Goto

Ultrasonics Sonochemistry　Vol. 73　p. 105508-105508　2021/05　Research paper (scientific journal)

MEMS hydrogen gas sensor with wireless quartz crystal resonator

Lianjie Zhou, Fumihito Kato, Nobutomo Nakamura, Yasushi Oshikane, Akira Nagakubo, Hirotsugu Ogi

Sensors and Actuators, B: Chemical　Vol. 334　2021/05/01　Research paper (scientific journal)

Monitoring of rotating bending fatigue damage by axial-shear resonance using magnetostrictively-coupled EMAT

Kiyoshi Minoura, Hirotsugu Ogi, Masahiko Hirao

Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 62　No. 603　p. 2520-2526　2020/11　Research paper (scientific journal)

Contactless measurement of ultrasonic attenuation and average grain size with electromagnetic acoustic resonance

Hirotsugu Ogi, Masahiko Hirao, Takasi Honda, Hidekazu Fukuoka

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　Vol. 58　No. 9　p. 1021-1028　2020/09　Research paper (scientific journal)

Ultrasonic attenuation monitoring of fatigue damage in low carbon steels with electromagnetic acoustic resonance (EMAR)

Toshihiro Ohtani, Hirotsugu Ogi, Yoshikiyo Minami, Masahiko Hirao

Journal of Alloys and Compounds　Vol. 310　No. 1-2　p. 440-444　2020/09　Research paper (scientific journal)

In-situ monitoring of ultrasonic attenuation during rotating bending fatigue of carbon steel with electromagnetic acoustic resonance

Hirotsugu Ogi, Takayuki Hamaguchi, Masahiko Hirao

Journal of Alloys and Compounds　Vol. 310　No. 1-2　p. 436-439　2020/09　Research paper (scientific journal)

Snoek relaxation in a copper-precipitated alloy steel

Hirotsugu Ogi, Hassel Ledbetter, Sudook Kim

Journal of Alloys and Compounds　Vol. 310　No. 1-2　p. 432-435　2020/09　Research paper (scientific journal)

Resonant ultrasound spectroscopy for measuring of elastic constants of small solids

Hirotsugu Ogi

Zairyo/Journal of the Society of Materials Science, Japan　Vol. 69　No. 8　p. 582-585　2020/08/15　Research paper (scientific journal)

Time-Resolved Observation of Evolution of Amyloid-β Oligomer with Temporary Salt Crystals

Kichitaro Nakajima, Tomoya Yamazaki, Yuki Kimura, Masatomo So, Yuji Goto, Hirotsugu Ogi

Journal of Physical Chemistry Letters　Vol. 11　No. 15　p. 6176-6184　2020/08/06　Research paper (scientific journal)

Bulk-wave generation in a ferromagnetic metal by electromagnetic acoustic transduction

H. Ogi, K. Minoura, M. Hirao

Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 62　No. 600　p. 1955-1962　2020/08　Research paper (scientific journal)

Mechanism of affinity-enhanced protein adsorption on bio-nanocapsules studied by viscoelasticity measurement with wireless QCM biosensor

Kentaro Noi, Masumi Iijima, Shun'Ichi Kuroda, Fumihito Kato, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 59　No. SK　2020/07/01　Research paper (scientific journal)

Thermal conduction in isotope diamond thin films studied by pump-probe laser reflectivity measurement

Hsu Kai Weng, Akira Nagakubo, Hideyuki Watanabe, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 59　2020/07/01　Research paper (scientific journal)

Enhancement of sensitivity of Pd-based hydrogen-gas sensor by plasma exposure studied by wireless quartz resonator

Lianjie Zhou, Nobutomo Nakamura, Akira Nagakubo, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 59　2020/07/01　Research paper (scientific journal)

Development of confocal picosecond ultrasonics for visualizing propagation of an acoustic wave

Nobutomo Nakamura, Atsushi Maehara, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 59　No. SK　2020/07/01　Research paper (scientific journal)

Interplanar stiffness in defect-free monocrystalline graphite

Koichi Kusakabe, Atsuki Wake, Akira Nagakubo, Kensuke Murashima, Mutsuaki Murakami, Kanta Adachi, Hirotsugu Ogi

Physical Review Materials　Vol. 4　No. 4　2020/04　Research paper (scientific journal)

Elastic constants of beta tungsten thin films studied by picosecond ultrasonics and density functional theory

A. Nagakubo, H. T. Lee, H. Ogi, T. Moriyama, T. Ono

Applied Physics Letters　Vol. 116　No. 2　2020/01/13　Research paper (scientific journal)

Hydrogen-gas sensing at low concentrations using extremely narrow gap palladium nanoclusters prepared by resistive spectroscopy

N. Nakamura, T. Ueno, H. Ogi

Journal of Applied Physics　Vol. 126　No. 22　2019/12/14　Research paper (scientific journal)

Ultrasonication-based rapid amplification of α-synuclein aggregates in cerebrospinal fluid

Keita Kakuda, Kensuke Ikenaka, Katsuya Araki, Masatomo So, César Aguirre, Yuta Kajiyama, Kuni Konaka, Kentaro Noi, Kousuke Baba, Hiroshi Tsuda, Seiichi Nagano, Takuma Ohmichi, Yoshitaka Nagai, Takahiko Tokuda, Omar M.A. El-Agnaf, Hirotsugu Ogi, Yuji Goto, Hideki Mochizuki

Scientific Reports　Vol. 9　No. 1　p. 6001-6001　2019/12/01　Research paper (scientific journal)

Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass

Nobutomo Nakamura, Shizuka Nakashima, Hirotsugu Ogi

Scientific Reports　Vol. 9　No. 1　2019/12/01　Research paper (scientific journal)

Enhancement of sensitivity of Pd-based hydrogen sensor by repeated hydrogen flow confirmed by wireless QCM

Lianjie Zhou, Nobutomo Nakamura, Akira Nagakubo, Hirotsugu Ogi

2019/11　Research paper (international conference proceedings)

Phonon propagation in isotope diamond thin films studied by pump-probe laser reflectivity measurement

Hsu Kai Weng, Akira Nagakubo, Hideyuki Watanabe, Hirotsugu Ogi

2019/11　Research paper (international conference proceedings)

Highly sensitive hydrogen detection using curvature change of wireless-electrodeless quartz resonators

L. Zhou, N. Nakamura, A. Nagakubo, H. Ogi

Applied Physics Letters　Vol. 115　No. 17　2019/10/21　Research paper (scientific journal)

Relationship between Temperature Coefficient of Sound Velocity and Bond Angle in Vitreous SiO2-Type Films

A. Nagakubo, H. Ogi, T. Tsuboi, A. Koreeda, Y. Fujii

2019/10

Study on Phonon Propagation in Isotope Diamond Superlattice

H. K. Weng, A. Nagakubo, H. Ogi, H. Watanabe

2019/09

Time-range controllable asynchronous picosecond ultrasonics with titanium-sapphire pulse lasers

A. Nagakubo, H. Tamura, H. Ogi

2019/09

Ultrahigh-sensitive wireless QCM with bio-nanocapsules

Kentaro Noi, Masumi Iijima, Shun'ichi Kuroda, Hirotsugu Ogi

Sensors and Actuators, B: Chemical　Vol. 293　p. 59-62　2019/08/15　Research paper (scientific journal)

Ultrahigh-frequency, wireless mems qcm biosensor for direct, label-free detection of biomarkers in a large amount of contaminants

Kentaro Noi, Arihiro Iwata, Fumihito Kato, Hirotsugu Ogi

Analytical Chemistry　Vol. 91　No. 15　p. 9398-9402　2019/08/06　Research paper (scientific journal)

Ultrahigh-Frequency Wireless MEMS QCM Biosensor for Direct Label-Free Detection of Biomarkers in a Large Amount of Contaminants

K. Noi, A. Iwata, F. Kato, H. Ogi

Anal. Chem.　2019/07　Research paper (scientific journal)

Zero temperature coefficient of sound velocity in vitreous silicon oxynitride thin films

A. Nagakubo, S. Tsuboi, Y. Kabe, S. Matsuda, A. Koreeda, Y. Fujii, H. Ogi

Appl. Phys. Lett.　Vol. 114　2019/07　Research paper (scientific journal)

Zero temperature coefficient of sound velocity in vitreous silicon oxynitride thin films

A. Nagakubo, S. Tsuboi, Y. Kabe, S. Matsuda, A. Koreeda, Y. Fujii, H. Ogi

Applied Physics Letters　Vol. 114　No. 25　2019/06/24　Research paper (scientific journal)

Precise control of hydrogen response of semicontinuous palladium film using piezoelectric resonance method

N. Nakamura, T. Ueno, H. Ogi

Applied Physics Letters　Vol. 114　No. 20　2019/05/20　Research paper (scientific journal)

Ultrahigh-Sensitive Wireless QCM with Bio-nanocapsules

K. Noi, M. Iijima, S. Kuroda, H. Ogi

Sens. Actuat. B: Chemical　2019/05　Research paper (scientific journal)

Ultrasonication-based rapid amplification of α-synuclein aggregates in cerebrospinal fluid

K. Kakuda, K. Ikenaka, K. Araki, M. So, C. Aguirre, Y. Kajiyama, K. Konaka, K. Noi, K. Baba, H. Tsuda, S. Nagano, T. Ohmichi, Y. Nagai, T. Tokuda, O. M.A. El-Agnaf, H. Ogi, Y. Goto, H. Mochizuki

Sci. Rep.　Vol. 9　2019/04　Research paper (scientific journal)

Nano-plate biosensor array using ultrafast heat transport through proteins

Hirotsugu Ogi, Shigeru Iwagami, Akira Nagakubo, Takuya Taniguchi, Teruo Ono

Sensors and Actuators, B: Chemical　Vol. 278　p. 15-20　2019/01/01　Research paper (scientific journal)

Elastic stiffness of metallic multilayers studied by picosecond ultrasonics: Improved interpretation of interface elasticity

Nobutomo Nakamura, Ryo Yokomura, Nobutaka Takeuchi, Daiki Yamakado, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 58　No. 7　2019　Research paper (scientific journal)

Deuterium effect on Elastic property of Tungsten thin film

2018/12

Mechanism of unusual elasticity in β-Ga2O3 studied by ab-initio calculation

Kanta Adachi, Akira Nagakubo, Hirotsugu Ogi

2018/10　Research paper (international conference proceedings)

Picosecond-ultrasound study on interlayer interaction of monocrystal graphite

A. Wake, H. Ogi, A. Nagakubo, K. Kusakabe, K. Murashima, M. Murakami

2018/10

Guided acoustic wave in a single Pt nanowire

Hiroki Tamura, Akira Nagakubo, Teruo Ono, Hirotsugu Ogi

2018/10

Resonance frequencies of AlN and metal freestanding multilayers studied by picosecond ultrasonics

Akira Nagakubo, Tokihiro Nishihara, Hirotsugu Ogi

2018/10　Research paper (international conference proceedings)

アモルファス酸窒化シリコン薄膜の音速の温度依存性：ゼロ温度係数の実現

坪井誠也, 荻博次, 長久保白, 松田聡, 壁義郎, 是枝聡肇, 藤井康裕

2018/09

Unusual elasticity of monoclinic β-Ga<inf>2</inf>O<inf>3</inf>

K. Adachi, H. Ogi, N. Takeuchi, N. Nakamura, H. Watanabe, T. Ito, Y. Ozaki

Journal of Applied Physics　Vol. 124　No. 8　2018/08/28　Research paper (scientific journal)

Perturbation theories behind thermal mode spectroscopy for high-accuracy measurement of thermal diffusivity of solids

Hideshi Ishida, Hirotsugu Ogi

Philosophical Magazine　Vol. 98　No. 23　p. 2164-2187　2018/08/13　Research paper (scientific journal)

Wireless poly(dimethylsiloxane) quartz-crystal-microbalance biosensor chip fabricated by nanoimprint lithography for micropump integration aiming at application in lab-on-a-chip

Fumihito Kato, Hiroyuki Noguchi, Yukinari Kodaka, Naoya Oshida, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 57　No. 7　2018/07　Research paper (scientific journal)

Theoretical study on elastic properties of Si<inf>2</inf>N<inf>2</inf>O by ab initio calculation

Seiya Tsuboi, Kanta Adachi, Akira Nagakubo, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 57　No. 7　p. 07LB04-1-07LB04-4　2018/07　Research paper (scientific journal)

Wireless PDMS QCM biosensor chip fabricated by nanoimprint lithography for micropump integration assuming application to Lab-on-a-chip

F. Kato, H. Noguchi, Y. Kodaka, N. Oshida, H. Ogi

Jpn. J. Appl. Phys.　2018/07　Research paper (scientific journal)

Nano-plate biosensor array using ultrafast heat transport through proteins

Hirotsugu Ogi, Shigeru Iwagami, Akira Nagakubo, Takuya Taniguchi Taniguchi, Teruo Ono

2018/06

Viscoelasticity Response during Fibrillation of Amyloid β Peptides on a Quartz-Crystal-Microbalance Biosensor

Yen Ting Lai, Hirotsugu Ogi, Kentaro Noi, Fumihito Kato

Langmuir　Vol. 34　No. 19　p. 5474-5479　2018/05/15　Research paper (scientific journal)

Theoretical study on elastic properties of Si2N2O by ab-initio calculation

S. Tsuboi, K. Adachi, A. Nagakubo, H. Ogi

Jpn. J. Appl. Phys.　Vol. 57　2018/05　Research paper (scientific journal)

Viscoelasticity response during fibrillation of amyloid β peptides on quartz crystal microbalance biosensor

Y.-T. Lai, H. Ogi, K. Noi, F. Kato

Langmuir　Vol. 34　p. 5474-5479　2018/04　Research paper (scientific journal)

α、β-Wの内部・界面構造とスピンホール角

長久保白, 森山貴広, 田中健勝, 荻博次, 小野輝男

2018/02

Asymmetric MIM structure formation by PLD technique with metallic nitrides and its SPP excitation and waveguiding characteristics

Yasushi Oshikane, Motohiro Nakano, Hirotsugu Ogi

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 10731　2018　Research paper (international conference proceedings)

Heparin-dependent aggregation of hen egg white lysozyme reveals two distinct mechanisms of amyloid fibrillation

Ayame Nitani, Hiroya Muta, Masayuki Adachi, Masatomo So, Kenji Sasahara, Kazumasa Sakurai, Eri Chatani, Kazumitsu Naoe, Hirotsugu Ogi, Damien Hall, Yuji Goto

Journal of Biological Chemistry　Vol. 292　No. 52　p. 21219-21230　2017/12/29　Research paper (scientific journal)

Accelerated crystallization of colloidal glass by mechanical oscillation

Nobutomo Nakamura, Kyosuke Inayama, Tasuku Okuno, Hirotsugu Ogi, Masahiko Hirao

Scientific Reports　Vol. 7　No. 1　2017/12/01　Research paper (scientific journal)

Ultra-high-frequency wireless MEMS QCM biosensor for direct detection of biomarkers in serum

Hirotsugu Ogi, Arihiro Iwata

IEEE International Ultrasonics Symposium, IUS　2017/10/31　Research paper (international conference proceedings)

Temperature behavior of sound velocity of SiON thin films studied by picosecond ultrasound

Seiya Tsuboi, Hirotsugu Ogi, Akira Nagakubo, Nobutomo Nakamura, Satoru Matsuda, Yoshiro Kabe

IEEE International Ultrasonics Symposium, IUS　2017/10/31　Research paper (international conference proceedings)

Theoretical study on elastic properties of Si2N2O by ab-initio calculation

Seiya Tsuboi, Kanta Adachi, Akira Nagakubo, Hirotsugu Ogi

2017/10　Research paper (international conference proceedings)

斜方晶構造を有する液晶ポリマーの弾性率計測

長久保白, 中島静香, 荻博次, 太田晃仁

超音波TECHNO　Vol. 29　No. 5　p. 99-101　2017/10

Phonon anharmonicity in zirconium tungstate single crystal investigated by broadband light scattering

Eiichi Oishi, Yasuhiro Fujii, Daisuke Katayama, Akitoshi Koreeda, Akira Nagakubo, Hirotsugu Ogi

Japanese Journal of Applied Physics　Vol. 56　No. 10　2017/10　Research paper (international conference proceedings)

Resistive spectroscopy coupled with non-contacting oscillator for detecting discontinuous-continuous transition of metallic films

N. Nakamura, H. Ogi

Applied Physics Letters　Vol. 111　No. 10　2017/09/04　Research paper (scientific journal)

RNA Aptamer Binds Heparin-Binding Epidermal Growth Factor-Like Growth Factor with High Affinity and Specificity and Neutralizes Its Activity

Masaki Yamato, Takashi Matsuzaki, Ryo Araki, Shota Tsuchida, Keiji Okuda, Hai Ying Fu, Shoji Sanada, Hiroshi Asanuma, Yoshihiro Asano, Masanori Asakura, Hiroomi Torii, Kentaro Noi, Hirotsugu Ogi, Ryo Iwamoto, Eisuke Mekada, Seiji Takashima, Masafumi Kitakaze, Yasushi Sakata, Tetsuo Minamino

International Journal of Gerontology　Vol. 11　No. 3　p. 191-196　2017/09　Research paper (scientific journal)

Multi-channel wireless quartz crystal microbalance biosensor fabricated with poly(dimethylsiloxane)

Fumihito Kato, Hiroyuki Noguchi, Yukinari Kodaka, Naoki Chiku, Hiroto Shibata, Fuyuki Abe, Hirotsugu Ogi

TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems　p. 1664-1667　2017/07/26　Research paper (international conference proceedings)

Foreword ultrasonic electronics

Mami Matsukawa, Jun Kondoh, Keiji Sakai, Iwaki Akiyama, Pak Kon Choi, Hiroyuki Hachiya, Akira Harata, Hideyuki Hasegawa, Kenya Hashimoto, Shoji Kakio, Nobuki Kudo, Subaru Kudo, Tatsuro Matsuoka, Koichi Mizutani, Kentaro Nakamura, Hirotugu Ogi, Sinichi Takeuchi, Takao Tsuchiya, Shinichiro Umemura, Yasuaki Watanabe, Ken Yamada, Kyuichi Yasui

Japanese Journal of Applied Physics　Vol. 56　No. 7　2017/07　Research paper (scientific journal)

RNA aptamer binds heparin-binding epidermal growth factor-like growth factor with high affinity and specificity and neutralizes its activity

M. Yamato, T. Matsuzaki, R. Araki, S. Tsuchida, K. Okuda, H. Ying, S. Sanada, H. Asanuma, Y. Asano, M. Asakura, S. Takashima, M. Kitakaze, K. Noi, H. Torii, H. Ogi, R. Iwamoto, E. Mekada, Y. Sakata, T. Minamino

2017/06　Research paper (scientific journal)

Drastic acceleration of fibrillation of insulin by transient cavitation bubble

Kichitaro Nakajima, Daisuke Nishioka, Masahiko Hirao, Masatomo So, Yuji Goto, Hirotsugu Ogi

Ultrasonics Sonochemistry　Vol. 36　p. 206-211　2017/05/01　Research paper (scientific journal)

EMAT pipe inspection technique using higher mode torsional guided wave T(0,2)

Nurmalia, N. Nakamura, H. Ogi, M. Hirao

NDT and E International　Vol. 87　p. 78-84　2017/04　Research paper (scientific journal)

Optimized Ultrasonic Irradiation Finds Out Ultrastable Aβ<inf>1-40</inf> Oligomers

Kichitaro Nakajima, Masatomo So, Kazuma Takahashi, Yoh Ichi Tagawa, Masahiko Hirao, Yuji Goto, Hirotsugu Ogi

Journal of Physical Chemistry B　Vol. 121　No. 12　p. 2603-2613　2017/03/30　Research paper (scientific journal)

タングステン酸ジルコニウムのラマン散乱分光

大石栄一, 片山大輔, 藤井康裕, 是枝聡肇, 長久保白, 荻博次

2017/03

共振超音波スペクトロスコピーを用いた高抵抗GaNの弾性と圧電性の研究

足立寛太, 荻博次, 長久保白, 中村暢伴, 平尾雅彦

2017/03

ピコ秒超音波法による酸窒化シリコン薄膜の音速計測

坪井誠也, 荻博次, 長久保白, 平尾雅彦, 松田聡, 壁義郎

2017/03

Flaw Detection with a Point-focusing Electromagnetic Acoustic Transducer and Local Vibration around the Slit

ASHIDA Kazuhiro, TAKISHITA Takashi, TSUBOI Seiya, NAKAMURA Nobutomo, OGI Hirotsugu, HIRAO Masahiko

Journal of The Japanese Society for Non-Destructive Inspection　Vol. 66　No. 9　p. 437-442　2017

Thermal Mode Spectroscopy for Thermal Diffusivity of Millimeter-Size Solids

Hirotsugu Ogi, Tatsuya Ishihara, Hideshi Ishida, Akira Nagakubo, Nobutomo Nakamura, Masahiko Hirao

Physical Review Letters　Vol. 117　No. 19　2016/11/04　Research paper (scientific journal)

Monitoring of carrier dynamics in GaN during disappearance of piezoelectricity by resonant ultrasound spectroscopy

Kanta Adachi, Hirotsugu Ogi, Akira Nagakubo, Nobutomo Nakamura, Masahiko Hirao, M. Imada, M. Yoshimura, Y. Mori

2016/11　Research paper (international conference proceedings)

Determination of elastic constants of liquid crystal polymer with orthorhombic structure

Sizuka Nakashima, Akira Nagakubo, Hirotsugu Ogi, Masahiko Hirao, A. Ota

2016/11　Research paper (international conference proceedings)

Wave-propagation properties of alpha and beta Lanthanum studied by ab-initio calculations

Akira Nagakubo, Hirotsugu Ogi, Koichi Kusakabe, Masahiko Hirao

2016/11　Research paper (international conference proceedings)

Discussion on very small temperature dependence of diamond’s elastic constants

Akira Nagakubo, Hirotsugu Ogi, Masahiko Hirao

2016/11

Piezoelectric coefficients of GaN determined by hopping conduction of carriers

K. Adachi, H. Ogi, A. Nagakubo, N. Nakamura, M. Hirao, M. Imade, M. Yoshimura, Y. Mori

Applied Physics Letters　Vol. 109　No. 18　2016/10/31　Research paper (scientific journal)

Inspection of stress corrosion cracking in welded stainless steel pipe using point-focusing electromagnetic-acoustic transducer

Nobutomo Nakamura, Kazuhiro Ashida, Takashi Takishita, Hirotsugu Ogi, Masahiko Hirao

NDT and E International　Vol. 83　p. 88-93　2016/10/01　Research paper (scientific journal)

Elastic constants of GaN between 10 and 305 K

K. Adachi, H. Ogi, A. Nagakubo, N. Nakamura, M. Hirao, M. Imade, M. Yoshimura, Y. Mori

Journal of Applied Physics　Vol. 119　No. 24　2016/06/28　Research paper (scientific journal)

Elastic constant C <inf>11</inf> of ¹²C diamond between 10 and 613 K

A. Nagakubo, M. Arita, H. Ogi, H. Sumiya, N. Nakamura, M. Hirao

Applied Physics Letters　Vol. 108　No. 22　2016/05/30　Research paper (scientific journal)

高抵抗 GaN の高温における共振超音波スペクトロスコピーの開発と圧電性の評価

足立寛太, 荻博次, 長久保白, 中村暢伴, 平尾雅彦, 吉村政志, 森勇介

2016/03

Nucleus factory on cavitation bubble for amyloid β fibril

Kichitaro Nakajima, Hirotsugu Ogi, Kanta Adachi, Kentaro Noi, Masahiko Hirao, Hisashi Yagi, Yuji Goto

Scientific Reports　Vol. 6　No. 22015　2016/02/25　Research paper (scientific journal)

Nucleus factory on cavitation bubble for amyloid β fibril

K. Nakajima, H. Ogi, K. Adachi, K. Noi, M. Hirao, H. Yagi, Y. Goto

Sci. Rep.　2016/02　Research paper (scientific journal)

Impact of interface stiffness in surface-wave resonances on nanostrip-attached substrates

Ogi Hirotsugu, Masuda Shoichi, Nagakubo Akira, Nakamura Nobutomo, Hirao Masahiko, Kondou Kouta, Ono Teruo

PHYSICAL REVIEW B　Vol. 93　No. 2　2016/01/22

21aAF-6 A Brillouin scattering study of ZrW_2O_8

Wani H., Fujii Y., Koreeda A., Nagakubo A., Ogi H.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 2694-2694　2016

Evaluation of the Slit Detectability of the Point-focusing Electromagnetic Acoustic Transducer in SUS304 Steel

ASHIDA Kazuhiro, TAKISHITA Takashi, NAKAMURA Nobutomo, OGI Hirotsugu, HIRAO Masahiko

Journal of The Japanese Society for Non-Destructive Inspection　Vol. 65　No. 2　p. 79-84　2016

Quantitative Young-Modulus Mapping by Resonant Ultrasound Microscopy

Ogi Hirotsugu, Hirao Masahiko

Materia Japan　Vol. 55　No. 12　p. 577-577　2016

Mode selective excitation of thermal modes

Ogi Hirotsugu, Ishida Hideshi, Ishihara Tatsuya, Hirao Masahiko

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 2584-2584　2016

Refractive index and extinction coefficient of Si at 400nm between 10 and 300K

Akira Nagakubo, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 54　No. 12　2015/12　Research paper (scientific journal)

タンパク質を介するフォノン輸送を利用したマイクロドット大規模多チャンネルバイオセンサー

岩上慈, 荻博次, 長久保白, 平尾雅彦, 谷口卓也, 小野輝男

2015/10

Surface-wave resonance on substrates with copper nanowires

Hirotsugu Ogi, Shoichi Masuda, Akira Nagakubo, Masahiko Hirao

2015/10

ピコ秒超音波による多層膜の弾性率と減衰の計測=Fe/Pt多層膜の熱処理温度依存性=

中村暢伴, 荻博次, 平尾雅彦

超音波TECHNO　2015/10

Viscoelasticity evolution in protein layers during binding reactions evaluated using high-frequency wireless and electrodeless quartz crystal microbalance biosensor without dissipation

Tomohiro Shagawa, Hiroomi Torii, Fumihito Kato, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 54　No. 9　2015/09/01　Research paper (scientific journal)

タンパク質を横切るフォノン輸送を利用したマイクロドット大規模多チャンネルバイオセンサー

岩上慈, 荻博次, 長久保白, 平尾雅彦, 谷口卓也, 小野輝男

2015/09

ダイヤモンド薄膜の弾性定数に対する異常同位体効果の観測

蟻田真里, 長久保白, 森上健太, 荻博次, 平尾雅彦, 渡邊幸志

2015/09

非接触共振超音波スペクトロスコピーによる極低温におけるGaNの弾性定数計測と非線形性の異方性の研究

足立寛太, 荻博次, 長久保白, 中村暢伴, 平尾雅彦, 今出守, 吉村政志, 森勇介

2015/09

Formation of continuous metallic film on quartz studied by noncontact resonant ultrasound spectroscopy

N. Nakamura, N. Yoshimura, H. Ogi, M. Hirao

Journal of Applied Physics　Vol. 118　No. 8　2015/08/28　Research paper (scientific journal)

Review on Acoustic Transducers for Resonant Ultrasound Spectroscopy

N. Nakamura, H. Ogi, M. Hirao

JOM　Vol. 67　No. 8　p. 1849-1855　2015/08/27

Viscoelasticity evolution in protein layers during binding reactions evaluated by a high-frequency wireless and electrodeless QCM biosensor without dissipation

T. Shagawa, H. Torii, F. Kato, H. Ogi, M. Hirao

Jpn. J. Appl. Phys.　2015/08　Research paper (scientific journal)

Temperature behavior of sound velocity of fluorine-doped vitreous silica thin films studied by picosecond ultrasonics

A. Nagakubo, H. Ogi, H. Ishida, M. Hirao, T. Yokoyama, T. Nishihara

Journal of Applied Physics　Vol. 118　No. 1　2015/07/07　Research paper (scientific journal)

Ultrasonic Electronics

Iwaki Akiyama, Keiji Sakai, Pak Kon Choi, Hiroyuki Hachiya, Akira Harata, Ken Ya Hashimoto, Shoji Kakio, Jun Kondoh, Subaru Kudo, Nobuki Kudoh, Minoru Kurosawa, Mami Matsukawa, Tatsuro Matsuoka, Koichi Mizutani, Kentaro Nakamura, Toshiaki Nakamura, Hirotsugu Ogi, Shinichi Takeuchi, Shin Ichiro Umemura, Yasuaki Watanabe, Ken Yamada, Kyuichi Yasui

Japanese Journal of Applied Physics　Vol. 54　No. 7　2015/07/01　Research paper (scientific journal)

Thermal Mode Spectroscopy for Measuring Thermal Conductivity of Small Solids

Hirotsugu Ogi, Tatsuya Ishihara, Kenta Morigami, Hideshi Ishihara, Akira Nagakubo, Masahiko Hirao, H. J. Maris

2015/07

Ultrafast Heat Transport Across Protein Layer: The Microdot Biosensor Array

Hirotsugu Ogi, Shigeru Iwagami, Hideshi Ishida, Akira Nagakubo, Masahiko Hirao

2015/07

Acoustic properties of co-doped AlN thin films at low temperatures studied by picosecond ultrasonics

Akira Nagakubo, Mari Arita, Tsuyoshi Yokoyama, Satoru Matsuda, Masanori Ueda, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 54　No. 7　2015/07/01　Research paper (scientific journal)

Nucleation-fibrillation dynamics of Aβ<inf>1-40</inf> peptides on liquid-solid surface studied by total-internal-reflection fluorescence microscopy coupled with quartz-crystal microbalance biosensor

Hiroki Hamada, Hirotsugu Ogi, Kentaro Noi, Hisashi Yagi, Yuji Goto, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 54　No. 7　2015/07/01　Research paper (scientific journal)

Development of shear-vertical-wave point-focusing electromagnetic acoustic transducer

Takashi Takishita, Kazuhiro Ashida, Nobutomo Nakamura, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 54　No. 7　2015/07/01　Research paper (scientific journal)

Relationship between viscosity change and specificity in protein binding reaction studied by high-frequency wireless and electrodeless MEMS biosensor

Tomohiro Shagawa, Hiroomi Torii, Fumihito Kato, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 54　No. 6　2015/06/01　Research paper (scientific journal)

Precise measurement of sound velocity of amorphous silica at low temperatures by picosecond ultrasounds: correction of static heating effect

Akira Nagakubo, Hideshi Ishida, Hirotsugu Ogi, Masahiko Hirao

2015/05

Elastic Constant of Highly Pure Diamond at Cryogenic Temperatures Studied by Picosecond Ultrasound Spectroscopy

Mari Arita, Akira Nagakubo, Tatsuya Ishihara, Hitoshi Sumiya, Hirotsugu Ogi, Masahiko Hirao

2015/05

The apparent Hall-Petch effect of nano-polycrystalline cubic boron nitrides

Akira Nagakubo, Hirotsugu Ogi, Hitoshi Sumiya, MasahikoHirao

2015/05

Microtubule severing by katanin p60 AAA+ATPase requires the C-terminal acidic tails of both α-and β-tubulins and basic amino acid residues in the AAA+ring pore

Ai Johjima, Kentaro Noi, Shingo Nishikori, Hirotsugu Ogi, Masatoshi Esaki, Teru Ogura

Journal of Biological Chemistry　Vol. 290　No. 18　p. 11762-11770　2015/05/01　Research paper (scientific journal)

超音波によるAβペプチドの凝集加速

中島 吉太郎, 足立 寛太, 荻 博次, 平尾 雅彦, 後藤 祐児

超音波テクノ　2015/04

無線・無電極水晶振動子バイオセンサーの原理と応用

荻 博次

化学とマイクロ・ナノシステム学会誌　2015/04

Hopping conduction and piezoelectricity in Fe-doped GaN studied by non-contacting resonant ultrasound spectroscopy

H. Ogi, Y. Tsutsui, N. Nakamura, A. Nagakubo, M. Hirao, M. Imade, M. Yoshimura, Y. Mori

Applied Physics Letters　Vol. 106　No. 9　2015/03/02　Research paper (scientific journal)

Elastic stiffness of cubic and wurtzite boron nitride

Akira Nagakubo, Hirotsugu Ogi, Hitoshi Sumiya, Masahiko Hirao

2015/03

Erratum: Elastic properties of single-crystalline ω phase in titanium (Acta Materialia 61 (2013) (7543-7554))

M. Tane, Y. Okuda, Y. Todaka, H. Ogi, A. Nagakubo

Acta Materialia　Vol. 84　2015/02/01　Research paper (scientific journal)

Picosecond ultrasound for studying anomalous temperature dependence of elastic constants of the negative-thermal-expansion zirconium tungstate

Syunsuke Fukazawa, Akira Nagakubo, Hirotsugu Ogi, Masahiko Hirao

2014/12　Research paper (international conference proceedings)

Ultrafast propagation of β-amyloid fibrils in oligomeric cloud

H. Ogi, M. Fukukshima, H. Hamada, K. Noi, M. Hirao, H. Yagi, Y. Goto

Sci. Rep.　2014/10　Research paper (scientific journal)

ピコ秒フォノン計測によるマイクロドットを用いた大規模多チャンネルバイオセンサーの開発

岩上慈, 荻博次, 長久保白, 中村暢伴, 平尾雅彦, 平松亮, 小野輝男

2014/09

Temperature coefficients of fluorine-doped amorphous-SiO2 thin films measured by picosecond ultrasonics

Akira Nagakubo, Satoru Matsuda, Hirotsugu Ogi, Masahiko Hirao

2014/09

極低温ピコ秒超音波法を用いたGaN のキャリアダイナミクスの観測と圧電定数計測

長久保白, 石原達也, 荻博次, 中村暢伴, 平尾雅彦

2014/09

Calibration-free portable Young's-modulus tester with isolated langasite oscillator

Hirotsugu Ogi, Yuto Sakamoto, Masahiko Hirao

Ultrasonics　Vol. 54　No. 7　p. 1963-1966　2014/09　Research paper (international conference proceedings)

Elasticity and hardness of nano-polycrystalline boron nitrides: The apparent Hall-Petch effect

A. Nagakubo, H. Ogi, H. Sumiya, M. Hirao

Applied Physics Letters　Vol. 105　No. 8　2014/08/25　Research paper (scientific journal)

Elimination of bandwidth effect in attenuation measurement with picosecond ultrasonics

Atsushi Maehara, Nobutomo Nakamura, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 53　No. 8　2014/08　Research paper (scientific journal)

Erratum: Monitoring of longitudinal-wave velocity and attenuation of SrTiO<inf>3</inf> at low temperatures using picosecond ultrasound Spectroscopy (Japanese Journal of Applied Physics (2012) 51 (07GA09))

Akira Nagakubo, Akihiro Yamamoto, Kenichi Tanigaki, Hirotsugu Ogi, Nobutomo Nakamura, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 53　No. 5　2014/05　Research paper (scientific journal)

微小な超高硬度材料の弾性定数を正確に測る方法：ピコ秒超音波スペクトロスコピー法

荻 博次

New Diamond　2014/05

A7 The mechanisms of ultrasonication-induced acceleration of amyloid fibril formation

So Masatomo, Goto Yuji, Ogi Hirotsugu

Proceedings of the Annual Meeting of the Japan Society of Sonochemistry　Vol. 23　p. 13-14　2014

Ultrafast propagation of β-amyloid fibrils in oligomeric cloud

Hirotsugu Ogi, Masahiko Fukukshima, Hiroki Hamada, Kentaro Noi, Masahiko Hirao, Hisashi Yagi, Yuji Goto

Scientific Reports　Vol. 4　No. 6960　2014　Research paper (scientific journal)

Low-temperature elastic constants of monocrystal corundum (α-Al <inf>2</inf>O<inf>3</inf>)

R. Tarumi, H. Ledbetter, H. Ogi, M. Hirao

Philosophical Magazine　Vol. 93　No. 36　p. 4532-4543　2013/12/01　Research paper (scientific journal)

Elastic properties of single-crystalline ω phase in titanium

M. Tane, Y. Okuda, Y. Todaka, H. Ogi, A. Nagakubo

Acta Materialia　Vol. 61　No. 20　p. 7543-7554　2013/12　Research paper (scientific journal)

Wireless-electrodeless quartz-crystal-microbalance biosensors for studying interactions among biomolecules: A review

Hirotsugu Ogi

Proceedings of the Japan Academy Series B: Physical and Biological Sciences　Vol. 89　No. 9　p. 401-417　2013/11/11

Acoustic properties of fluorine-doped silica-glass thin films at low temperatures

Akira Nagakubo, Shoichi Masuda, Satoru Matsuda, Hirotsugu Ogi, Masahiko Hirao

2013/11　Research paper (international conference proceedings)

熱共振現象を利用した直方体微小試料に対する新しい熱拡散率計測法の開発

森上健太, 長久保白, 荻博次, 石田秀士, Humphrey J Maris, 平尾雅彦

2013/10

Elastic constants of polycrystalline L1<inf>0</inf>-FePt at high temperatures

N. Nakamura, N. Yoshimura, H. Ogi, M. Hirao

Journal of Applied Physics　Vol. 114　No. 9　2013/09/07　Research paper (scientific journal)

サブTHz超音波を用いた機能性酸化物の音速減衰の極低温計測

長久保白, 荻博次, 平尾雅彦

超音波TECHNO　2013/09

Application of sandwich assay to resonance acoustic microbalance with naked-embedded quartz biosensor for high-selectivity detection of C-reactive protein

Fumihito Kato, Keisuke Tsurimoto, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 52　No. 7 PART 2　2013/07　Research paper (scientific journal)

Application of Sandwich Assay to RAMNE-Q Biosensor for High-selective Detection of C-reactive Protein

F. Kato, K. Tsurimoto, H. Ogi, M. Hirao

Jpn. J. Appl. Phys.　2013/07　Research paper (scientific journal)

Mechanisms of ultrasonically induced fibrillation of amyloid β<inf>1-40</inf> peptides

Kentaro Uesugi, Hirotsugu Ogi, Masahiko Fukushima, Masatomo So, Hisashi Yagi, Yuji Goto, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 52　No. 7 PART 2　2013/07　Research paper (scientific journal)

Mode conversion and total reflection of torsional waves for pipe inspection

Nurmalia, Nobutomo Nakamura, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 52　No. 7 PART 2　2013/07　Research paper (scientific journal)

Elastic stiffness of co thin films at high temperatures monitored by picosecond ultrasound

Nobutomo Nakamura, Yohei Nakamichi, Hirotsugu Ogi, Masahiko Hirao, Masayoshi Nishiyama

Japanese Journal of Applied Physics　Vol. 52　No. 7 PART 2　2013/07　Research paper (scientific journal)

Elastic constants of cubic and wurtzite boron nitrides

A. Nagakubo, H. Ogi, H. Sumiya, K. Kusakabe, M. Hirao

Applied Physics Letters　Vol. 102　No. 24　2013/06/17　Research paper (scientific journal)

Measurement and Calculation of Elastic Constants of Boron Nitrides

Akira Nagakubo, Hirotsugu Ogi, Masahiko Hirao, Hitoshi Sumiya

2013/05

Cuナノワイヤの超高周波共振計測

荻 博次

金属　2013/04

熱共振現象を利用した新しい熱伝導率測定法の開発

森上健太, 長久保白, 荻博次, 石田秀士, H. J. Maris, 平尾雅彦

2013/03

Acceleration of deposition of AΒ<inf>1-40</inf> peptide on ultrasonically formed AΒ<inf>1-42</inf> nucleus studied by wireless quartz-crystal-microbalance biosensor

Hirotsugu Ogi, Masahiko Fukushima, Kentaro Uesugi, Hisashi Yagi, Yuji Goto, Masahiko Hirao

Biosensors and Bioelectronics　Vol. 40　No. 1　p. 200-205　2013/02/15　Research paper (scientific journal)

Acceleration of deposition of Aβ1-40 peptide on ultrasonically formed Aβ1-42 nucleus studied by wireless quartz-crystal-microbalance biosensor

H. Ogi, M. Fukushima, K. Uesugi, H. Yagi, Y. Goto, M. Hirao

Biosens. Bioelectron　2013/02　Research paper (scientific journal)

2P069 The mechanism of ultrasonication-induced amyloid fibril formation(01C. Protein: Property)

So Masatomo, Yoshimura Yuichi, Yagi Hisashi, Ogi Hirotsugu, Uesugi Kentaro, Naiki Hironobu, Goto Yuji

Seibutsu Butsuri　Vol. 53　No. 1　2013

Observation of higher stiffness in nanopolycrystal diamond than monocrystal diamond

Kenichi Tanigaki, Hirotsugu Ogi, Hitoshi Sumiya, Koichi Kusakabe, Nobutomo Nakamura, Masahiko Hirao, Hassel Ledbetter

Nature Communications　Vol. 4　2013　Research paper (scientific journal)

1J1-1 Precise Measurement of Elastic Constant of Isotopically Controlled Diamond Thin Films using Brillouin Oscillation Method(Physical Acoustics, Acousto-Optics, Piezoelectric Devices)

Morigami Kenta, Nagakubo Akira, Ogi Hirotsugu, Hirao Masahiko, Watanabe Hideyuki, Shikata Shinichi

Proceedings of Symposium on Ultrasonic Electronics　Vol. 33　p. 135-136　2012/11/13

Precise measurement of elastic constant of isotopically controlled diamond thin films using Brillouin oscillation method

Kenta Morigami, Akira Nagakubo, Hirotsugu Ogi, Masahiko Hirao, K. Watanabe, Shinichi Shikata

2012/11　Research paper (international conference proceedings)

Sub-terahertz-frequency attenuation and sound velocity of GaN at Cryogenic Temperatures Studied by Picosecond Ultrasound Spectroscopy

Akira Nagakubo, Yuki Tsutsui, Hirotsugu Ogi, Nobutomo Nakamura, Masahiko Hirao

2012/11　Research paper (international conference proceedings)

The impact of magnetostriction on the transduction of normal bias field EMATs

R. Ribichini, P. B. Nagy, H. Ogi

NDT and E International　Vol. 51　p. 8-15　2012/10　Research paper (scientific journal)

Erratum: Field dependence of coupling efficiency between electromagnetic field and ultrasonic bulk waves (Journal of Applied Physics (1997) 82 (3940))

H. Ogi

Journal of Applied Physics　Vol. 112　No. 5　2012/09/01　Research paper (scientific journal)

熱伝導のモード同定を用いた熱伝導率計測法の開発

森上健太, 長久保白, 荻博次, 石田秀士, H. J. Maris, 平尾雅彦

2012/09

極低温域における圧電体・誘電体に対するサブTHz 超音波の減衰計測

長久保白, 筒井裕貴, 荻博次, 中村暢伴, 平尾雅彦

2012/09

Distinguishing crystal-like amyloid fibrils and glass-like amorphous aggregates from their kinetics of formation

Yuichi Yoshimura, Yuxi Lin, Hisashi Yagi, Young-Ho Lee, Hiroki Kitayama, Kazumasa Sakurai, Masatomo So, Hirotsugu Ogi, Hironobu Naiki, Yuji Goto

Proc. Natl. Acad. Sci. USA　2012/09　Research paper (scientific journal)

Monitoring of longitudinal-wave velocity and attenuation of SrTiO <inf>3</inf> at low temperatures using picosecond ultrasound spectroscopy

Akira Nagakubo, Akihiro Yamamoto, Kenichi Tanigaki, Hirotsugu Ogi, Nobutomo Nakamura, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 51　No. 7 PART2　2012/07　Research paper (international conference proceedings)

Study of phase transition in SrTiO3 using ultrasonic attenuation at sub-terahertz region

Akira Nagakubo, Hirotsugu Ogi, Masahiko Hirao

2012/07

Monitoring of the Low-Temperature Phase Transitions of SrTiO3 Using Picosecond Ultrasound Spectroscopy

A. Nagakubo, A. Yamamoto, K. Tanigaki, H. Ogi, N. Nakamura, M. Hirao

Jpn. J. Appl. Phys.　2012/07　Research paper (scientific journal)

Picosecond ultrasound spectroscopy with a stable fiber laser for ultrahigh-frequency-oscillator applications: From nanomechanics to biosensors

Hirotsugu Ogi, Tetsuya Kawamoto, Yohei Nakamichi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 51　No. 7 PART2　2012/07　Research paper (international conference proceedings)

Elastic constants of langasite and alpha quartz at high temperatures measured by antenna transmission acoustic resonance

N. Nakamura, M. Sakamoto, H. Ogi, M. Hirao

Review of Scientific Instruments　Vol. 83　No. 7　2012/07

Resonance acoustic microbalance with naked-embedded quartz (RAMNE-Q) biosensor fabricated by microelectromechanical-system process

Fumihito Kato, Hirotsugu Ogi, Taiji Yanagida, Shintaro Nishikawa, Masahiko Hirao, Masayoshi Nishiyama

Biosensors and Bioelectronics　Vol. 33　No. 1　p. 139-145　2012/03/15　Research paper (scientific journal)

A14 Ultrasonication-Dependent Acceleration of Amyloid Fibril Formation

So Masatomo, Yoshimura Yuichi, Yagi Hisashi, Sakurai Kazumasa, Goto Yuji, Ogi Hirotsugu, Naiki Hironobu

Proceedings of the Annual Meeting of the Japan Society of Sonochemistry　Vol. 21　p. 85-86　2012

1E1436 Distinguishing crystal-like amyloid fibrils and glass-like amorphous aggregates from their kinetics of formation(Proteins: Property I,Oral Presentation,The 50th Annual Meeting of the Biophysical Society of Japan)

Yoshimura Yuichi, Lin Yuxi, Yagi Hisashi, Lee Young-Ho, Kitayama Hiroki, Sakurai Kazumasa, So Masatomo, Ogi Hirotsugu, Naiki Hironobu, Goto Yuji

Seibutsu Butsuri　Vol. 52　2012

Elastic, anelastic, and piezoelectric coefficients of GaN

N. Nakamura, H. Ogi, M. Hirao

Journal of Applied Physics　Vol. 111　No. 1　2012/01/01　Research paper (scientific journal)

Mode conversion behavior of SH guided wave in a tapered plate

Nurmalia, N. Nakamura, H. Ogi, M. Hirao, K. Nakahata

NDT and E International　Vol. 45　No. 1　p. 156-161　2012/01　Research paper (scientific journal)

Elastic Properties of Nanoporous Amorphous Al2O3

M. Tane, S. Nakano, R. Nakamura, H. Ogi, M. Ishimaru, H. Kimizuka, H. Nakajima

Proceedings of the 7th International Conference on Porous Metals and Metallic Foams held in Busan, Korea, September 18-21, 2011　2012/01　Research paper (international conference proceedings)

Monitoring of Sound Velocity and Attenuation in SrTiO3 across the Phase Transition at Low Temperatures using Picosecond Ultrasonics

Akira Nagakubo, Akihiro Yamamoto, Hirotsugu Ogi, Masahiko Hirao

2011/11　Research paper (international conference proceedings)

Elastic Constants of Boron Nitrides at Cryogenic Temperature

Akira Nagakubo, Kenichi Tanigaki, Hirotsugu Ogi, Masahiko Hirao, Hitoshi Sumiya, Katsuko Harano

2011/11

Ultrasonication-Dependent Acceleration of the Formation of Amyloid Fibrils

M. So, H. Yagi, K. Sakura, H. Ogi, H. Naiki, Y. Goto

J. Mol. Biol.　2011/10　Research paper (scientific journal)

Ultrasonication-dependent acceleration of amyloid fibril formation

Masatomo So, Hisashi Yagi, Kazumasa Sakurai, Hirotsugu Ogi, Hironobu Naiki, Yuji Goto

Journal of Molecular Biology　Vol. 412　No. 4　p. 568-577　2011/09/30　Research paper (scientific journal)

Ultrahigh Stiffness of High Purity Boron Nitrides and their Temperature Dependences at Cryogenic Temperatures Studied by Picosecond Ultrasound Spectroscopy

Akira Nagakubo, Kenichi Tanigaki, Hirotsugu Ogi, Masahiko Hirao, Hitoshi Sumiya, Katsuko Harano

2011/09　Research paper (international conference proceedings)

Picosecond ultrasound spectroscopy for studying elastic modulus of thin films: A review

Hirotsugu Ogi, Nobutomo Nakamura, Masahiko Hirao

Nondestructive Testing and Evaluation　Vol. 26　No. 3-4　p. 267-280　2011/09

Replacement-free mass-amplified sandwich assay with 180-MHz electrodeless quartz-crystal microbalance biosensor

Hirotsugu Ogi, Taiji Yanagida, Masahiko Hirao, Masayoshi Nishiyama

Biosensors and Bioelectronics　Vol. 26　No. 12　p. 4819-4822　2011/08/15　Research paper (scientific journal)

Seed-dependent deposition behavior of Aβ peptides studied with wireless quartz-crystal-microbalance biosensor

Hirotsugu Ogi, Yuji Fukunishi, Taiji Yanagida, Hisashi Yagi, Yuji Goto, Masahiko Fukushima, Kentaro Uesugi, Masahiko Hirao

Anal. Chem.　2011/07　Research paper (scientific journal)

High-frequency electrodeless quartz crystal microbalance chip with a bare quartz resonator encapsulated in a silicon microchannel

Fumihito Kato, Hirotsugu Ogi, Taiji Yanagida, Shintaro Nishikawa, Masayoshi Nishiyama, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 50　No. 7 PART 2　2011/07　Research paper (scientific journal)

Detection of shear horizontal guided waves propagating in aluminum plate with thinning region

Nurmalia, Nobutomo Nakamura, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 50　No. 7 PART 2　2011/07　Research paper (scientific journal)

Seed-dependent deposition behavior of Aβ peptides studied with wireless quartz-crystal-microbalance biosensor

Hirotsugu Ogi, Yuji Fukunishi, Taiji Yanagida, Hisashi Yagi, Yuji Goto, Masahiko Fukushima, Kentaro Uesugi, Masahiko Hirao

Analytical Chemistry　Vol. 83　No. 12　p. 4982-4988　2011/06/15　Research paper (scientific journal)

Low-temperature elastic constants and piezoelectric coefficients of langasite (La3Ga5SiO14)

R. Tarumi, H. Nitta, H. Ogi, M. Hirao

Philosophical Magazine　2011/06　Research paper (scientific journal)

Low-temperature elastic constants and piezoelectric coefficients of langasite (La<inf>3</inf>Ga<inf>5</inf>SiO<inf>14</inf>)

R. Tarumi, H. Nitta, H. Ogi, M. Hirao

Philosophical Magazine　Vol. 91　No. 16　p. 2140-2153　2011/06/01　Research paper (scientific journal)

Nanovoid formation by change in amorphous structure through the annealing of amorphous Al<inf>2</inf>O<inf>3</inf> thin films

M. Tane, S. Nakano, R. Nakamura, H. Ogi, M. Ishimaru, H. Kimizuka, H. Nakajima

Acta Materialia　Vol. 59　No. 11　p. 4631-4640　2011/06　Research paper (scientific journal)

Elasticity of High Purity Boron Nitrides at Cryogenic Temperatures Studied by Picosecond Laser Ultrasound and ab-initio Calculation

Akira Nagakubo, Knichi. Tanigaki, Hirotsugu Ogi, Masahiko Hirao, Hitoshi Sumiya, Katsuko Harano

2011/05

Low-temperature elastic constants and piezoelectric coefficients of langasite (La3Ga5SiO14)

R. Tarumi, H. Nitta, H. Ogi, M. Hirao

Phil. Mag.　2011/04　Research paper (scientific journal)

Elastic stiffness of L 1<inf>0</inf> FePt thin film studied by picosecond ultrasonics

N. Nakamura, A. Uranishi, M. Wakita, H. Ogi, M. Hirao, M. Nishiyama

Applied Physics Letters　Vol. 98　No. 10　2011/03/07　Research paper (scientific journal)

高純度BN 多結晶体の超高弾性と そ の極低温計測: ピ コ 秒超音波計測と 第一原理計算

長久保白, 谷垣健一, 森田啓, 荻博次, 平尾雅彦, 角谷均, 原野佳津子

2011/03

3Pa3-5 Development of MEMS Quartz Crystal Microbalance Biosensor with an Electrodeless Embedded Quartz Resonator(Poster Session)

Nishikawa Shintaro, Kato Fumihito, Yanagida Taiji, Ogi Hirotugu, Hirao Masahiko

Proceedings of Symposium on Ultrasonic Electronics　Vol. 32　p. 359-360　2011

Surface-wave nonlinearity measured with emat for fatigued steels

Hirotsugu Ogi, Masahiko Hirao

From Waves in Complex Systems to Dynamics of Generalized Continua: Tributes to Professor Yih-Hsing Pao on his 80th Birthday　p. 75-89　2011/01/01　Part of collection (book)

Reusable high-frequency electrodeless QCM biosensor with a bare quartz resonator embedded in a silicon microchannel

Fumihito Kato, Shintaro Nishikawa, Taiji Yanagida, Hirotsugu Ogi, Masahiko Hirao

2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11　p. 206-209　2011　Research paper (international conference proceedings)

Ultrathin-film oscillator biosensors excited by ultrafast light pulses

Hirotsugu Ogi, Tetsuya Kawamoto, Nobutomo Nakamura, Masahiko Hirao, Masayoshi Nishiyama

Biosensors and Bioelectronics　Vol. 26　No. 4　p. 1273-1277　2010/12/15　Research paper (scientific journal)

波長可変ピコ秒超音波法の開発と酸化物薄膜の減衰評価法の提案

森田啓, 荻博次, 中村暢伴, 平尾雅彦

日本機械学会論文集A編　Vol. 76　No. 771　p. 1444-1451　2010/12　Research paper (scientific journal)

Development of wavelength tunable picosecond ultrasound method for evaluating ultrasonic attenuation in oxide thin films

Kei Morita, Hirotsugu Ogi, Nobutomo Nakamura, Masahiko Hirao

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 76　No. 771　p. 1444-1451　2010/11　Research paper (scientific journal)

Significant softening of copper nanowires during electromigration studied by picosecond ultrasound spectroscopy

H. Ogi, A. Yamamoto, K. Kondou, K. Nakano, K. Morita, N. Nakamura, T. Ono, M. Hirao

Physical Review B - Condensed Matter and Materials Physics　Vol. 82　No. 15　2010/10/19　Research paper (scientific journal)

Strong strain-dependent elastic stiffness in ultrathin Pt films on MgO

N. Nakamura, Y. Kake, H. Ogi, M. Hirao

Journal of Applied Physics　Vol. 108　No. 4　2010/08/15　Research paper (international conference proceedings)

Development of 170MHz electrodeless quartz-crystal microbalance immunosensor with nonspecifically immobilized receptor proteins

Hirotsugu Ogi, Hironao Nagai, Yuji Fukunishi, Taiji Yanagida, Masahiko Hirao, Masayoshi Nishiyama

Japanese Journal of Applied Physics　Vol. 49　No. 7 PART 2　2010/07　Research paper (scientific journal)

Measurement of elastic constant and refraction index of thin films at low temperatures using picosecond ultrasound

Kenichi Tanigaki, Tatsuya Kusumoto, Hirotsugu Ogi, Nobutomo Nakamura, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 49　No. 7 PART 2　2010/07　Research paper (scientific journal)

Annealing effect on acoustic property of Fe/Pt superlattice studied by picosecond ultrasound

Nobutomo Nakamura, Atsuyoshi Uranishi, Mamoru Wakita, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 49　No. 7 PART 2　2010/07　Research paper (scientific journal)

Elastic constants and anisotropic internal frictions of decagonal Al <inf>72</inf>Ni<inf>18</inf>Co<inf>8</inf> single quasicrystal at low temperatures

R. Tarumi, H. Ledbetter, S. Shiomi, H. Ogi, M. Hirao, A. P. Tsai

Journal of Applied Physics　Vol. 108　No. 1　2010/07/01　Research paper (scientific journal)

Fast recovery of elastic constant in thin films studied by resonant-ultrasound spectroscopy

N. Nakamura, T. Nakashima, H. Ogi, M. Hirao, M. Nishiyama

Journal of Applied Physics　Vol. 107　No. 10　2010/05/15　Research paper (scientific journal)

Multichannel wireless-electrodeless quartz-crystal microbalance immunosensor

Hirotsugu Ogi, Hironao Nagai, Yuji Fukunishi, Taiji Yanagida, Masahiko Hirao, Masayoshi Nishiyama

Analytical Chemistry　Vol. 82　No. 9　p. 3957-3962　2010/05/01　Research paper (scientific journal)

Measurement of anisotropic Young's modulus of heat resistant coating by resonance ultrasound spectroscopy

Hiroyuki Waki, Satoshi Kubo, Hirotsugu Ogi, Akira Kobayashi

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 76　No. 762　p. 151-157　2010/02　Research paper (scientific journal)

共鳴超音波スペクトロスコピーによる耐熱コーティングのヤング率異方性測定

脇裕之, 久保智史, 荻博次, 小林明

日本機械学会論文集Ａ編　Vol. 76　No. 762　p. 151-157　2010/02　Research paper (scientific journal)

Resonant-ultrasound spectroscopy for studying annealing effect on elastic constant of thin film

N. Nakamura, T. Nakashima, S. Oura, H. Ogi, M. Hirao

Ultrasonics　Vol. 50　No. 2　p. 150-154　2010/02　Research paper (scientific journal)

1Pa-28 Development of a High-Frequency Electrodeless Quartz Crystal Microbalance Chip with a Bare Quartz Resonator Encapsulated in a Silicon MicroChannel and Its Application to a Biosensor(Poster Session)

Kato Fumihito, Nishikawa Shintaro, Yanagida Taiji, Ogi Hirotsugu, Hirao Masahiko, Koyama Mitsuaki, Watanabe Shigenori

Proceedings of Symposium on Ultrasonic Electronics　Vol. 31　p. 71-72　2010

T0301-1-2 Anomalous elastic property of a Co/Cu superlattice

WAKITA Mamoru, URANISHI Atsuyoshi, NAKAMURA Nobutomo, OGI Hirotsugu, HIRAO Masahiko

The proceedings of the JSME annual meeting　Vol. 2010　p. 169-170　2010

J0402-1-6 Development of Wavelength-Tunable Picosecond Ultrasound Method for Evaluating Ultrasonic Attenuation Oxide Thin Films

MORITA Kei, OGI Hirotsugu, NAKAMURA Nobutomo, HIRAO Masahiko

The proceedings of the JSME annual meeting　Vol. 2010　p. 395-396　2010

J0402-1-5 Development of Elastic-Constant Measurement in THin Films at Low Temperatures Using Picosecond Laser Ultrasound Spectroscopy

TANIGAKI Kenichi, KUSUMOTO Tatsuya, OGI Hirotsugu, NAKAMURA Nobutomo, HIRAO Masahiko

The proceedings of the JSME annual meeting　Vol. 2010　p. 393-394　2010

J0402-3-2 Mode Conversion of SH Guided Wave Propagating in Aluminum Plate with Thinning Region

Nurmalia, Nakamura Nobutomo, Ogi Hirotsugu, Hirao Masahiko

The proceedings of the JSME annual meeting　Vol. 2010　p. 411-412　2010

J0402-1-4 Vibrational Property of Ultrahigh Frequency Resonator with Fullerene Thin Film

FUJITA Yusaku, NAKAMURA Nobutomo, OGI Hirotsugu, HIRAO Masahiko, NISHIYAMA Masayoshi

The proceedings of the JSME annual meeting　Vol. 2010　p. 391-392　2010

Resonance ultrasound microscopy for imaging young's modulus of solids

Masahiko Hirao, Hirotsugu Ogi

IUTAM Bookseries　Vol. 26　p. 45-52　2010　Research paper (international conference proceedings)

Label-free ultrathin Pt film biosensor using phonon vibrations excited by ultrafast light pulses

Hirotsugu Ogi, Kozo Matsumoto, Yusaku Fujita, Tetsuya Kawamoto, Nobutomo Nakamura, Masahiko Hirao

Applied Physics Express　Vol. 3　No. 1　2010/01　Research paper (scientific journal)

170-MHz electrodeless quartz crystal microbalance biosensor: Capability and limitation of higher frequency measurement

Hirotsugu Ogi, Hironao Naga, Yuji Fukunishi, Masahiko Hirao, Masayoshi Nishiyama

Analytical Chemistry　Vol. 81　No. 19　p. 8068-8073　2009/10/01　Research paper (scientific journal)

第一原理計算によるナノ結晶ダイヤモンドの非sp3結合領域の構築とその弾性特性に及ぼす影響の解析

谷垣健一, 多根井寛志, 草部浩一, 荻博次, 中村暢伴, 平尾雅彦

日本機械学会論文集 A編　Vol. 75　No. 758　p. 1424-1429　2009/10　Research paper (scientific journal)

Mode Conversion of SH Guided Waves for Pipe Inspection by Electromagnetic Acoustic Transducer

Nobutomo Nakamura, Silvina Uribe, Hirotsugu Ogi, Masahiko Hirao

Vol. 58　No. 10　p. 452-458　2009/10　Research paper (scientific journal)

Ab-initio calculation model for nanocrystalline diamond with non-sp ³ bonded region and its effect on elastic properties

Hirotsugu Ogi, Kenichi Tanigaki, Hiroshi Tanei, Koichi Kusakabe, Nobutomo Nakamura, Masahiko Hirao

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 75　No. 758　p. 1423-1429　2009/10　Research paper (scientific journal)

Extraction of interface stiffness in superlattices: Proposal of the interface elasticity parameter

Hirotsugu Ogi, Tomohiro Shagawa, Nobutomo Nakamura, Masahiko Hirao

Applied Physics Express　Vol. 2　No. 10　2009/10　Research paper (scientific journal)

Noncontact evaluation of surface-wave nonlinearity for creep damage in Cr-Mo-V steel

Toshihiro Ohtani, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 48　No. 7 PART 2　2009/07　Research paper (scientific journal)

Aggregation behavior of amyloid β<inf>1-42</inf> peptide studied using 55 MHz wireless-electrodeless quartz crystal microbalance

Hirotsugu Ogi, Kenichi Hatanaka, Yuji Fukunishi, Hironao Nagai, Masahiko Hirao, Masayoshi Nishiyama

Japanese Journal of Applied Physics　Vol. 48　No. 7 PART 2　2009/07　Research paper (scientific journal)

Elastic-constant measurement in oxide and semiconductor thin films by Brillouin oscillations excited by picosecond ultrasound

Hirotsugu Ogi, Tomohiro Shagawa, Nobutomo Nakamura, Masahiko Hirao, Hidefumi Odaka, Naoto Kihara

Japanese Journal of Applied Physics　Vol. 48　No. 7 PART 2　2009/07　Research paper (scientific journal)

Fast recovery of elastic stiffness in Ag thin film studied by resonant-ultrasound spectroscopy

Nobutomo Nakamura, Takeo Nakashima, Hirotsugu Ogi, Masahiko Hirao, Masayoshi Nishiyama

Japanese Journal of Applied Physics　Vol. 48　No. 7 PART 2　2009/07　Research paper (scientific journal)

Nonspecific-adsorption behavior of polyethylenglycol and bovine serum albumin studied by 55-MHz wireless-electrodeless quartz crystal microbalance

Hirotsugu Ogi, Yuji Fukunishi, Hironao Nagai, Ken Okamoto, Masahiko Hirao, Masayoshi Nishiyama

Biosensors and Bioelectronics　Vol. 24　No. 10　p. 3148-3152　2009/06/15　Research paper (scientific journal)

Replacement-free electrodeless quartz crystal microbalance biosensor using nonspecific-adsorption of streptavidin on quartz

Hirotsugu Ogi, Ken Okamoto, Hironao Nagai, Yuji Fukunishi, Masahiko Hirao

Analytical Chemistry　Vol. 81　No. 10　p. 4015-4020　2009/05/15　Research paper (scientific journal)

薄膜弾性定数の測定

平尾雅彦, 荻 博次

日本機械学会論文集A編　Vol. 75　No. 752　p. 397-403　2009/04

J0406-2-3 High Temperature Young's Modulus of Protective Coating by Resonant-Ultrasound Spectroscopy with Needle Transducer Tripod

WAKI Hiroyuki, KUBO Satoshi, OGI Hirotsugu

The proceedings of the JSME annual meeting　Vol. 2009　p. 427-428　2009

J0406-1-6 Measurement of elastic stiffness of thin films by sub-terahertz ultrasonics

NAKAMURA Nobutomo, KAKE Yosuke, OGI Hirotsugu, HIRAO Masahiko

The proceedings of the JSME annual meeting　Vol. 2009　p. 421-422　2009

Quantitative young's modulus microscopy by isolated langasite oscillator: A contact mechanics study

H. Ogi, T. Inoue, H. Nagai, M. Hirao

AIP Conference Proceedings　Vol. 1096　p. 1599-1603　2009　Research paper (international conference proceedings)

170 MHz electrodeless quartz crystal microbalance for highly sensitive biosensors

Hirotsugu Ogi, Hironao Nagai, Yuji Fukunishi, Masahiko Hirao, Masayoshi Nishiyama

Proceedings - IEEE Ultrasonics Symposium　p. 718-720　2009　Research paper (international conference proceedings)

(111)配向した単結晶膜の弾性定数計測＝超音波共鳴法と希土類ビスマス鉄ガーネット膜＝

中村暢伴, 荻博次, 平尾雅彦, 福原貴志, 白木健一, 今泉伸生

超音波テクノ　2009/01

ブリルアン振動を用いた酸化物薄膜の弾性定数測定と組織評価

舎川知広, 荻博次, 中村暢伴, 平尾雅彦, 小高秀文, 木原直人

日本機械学会論文集 A編　Vol. 75　No. 749　p. 72-78　2009/01　Research paper (scientific journal)

Elastic constant and microstructure of oxide thin films studied by brillouin oscillation

Tomohiro Shagawa, Hirotsugu Ogi, Nobutomo Nakamura, Masahiko Hirao, Hidefumi Odaka, Naoto Kihara

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 75　No. 1　p. 72-78　2009/01　Research paper (scientific journal)

Stacking-fault structure explains unusual elasticity of nanocrystalline diamonds

H. Tanei, K. Tanigaki, K. Kusakabe, H. Ogi, N. Nakamura, M. Hirao

Applied Physics Letters　Vol. 94　No. 4　2009　Research paper (scientific journal)

Observation of Γ-point phonon frequency in ultrathin metallic films confirmed by ab initio calculation and lattice dynamics

H. Tanei, K. Kusakabe, H. Ogi, N. Nakamura, M. Hirao

Applied Physics Letters　Vol. 95　No. 1　2009　Research paper (scientific journal)

Laser-Induced Coherent Acoustic Phonons for Measuring Elastic Constants of Ultra-Thin Films

N. Nakamura, A. Uranishi, T. Shagawa, H. Ogi, M. Hirao, M. Nishiyama

Journal of Solid Mechanics and Materials Engineering　Vol. 2　No. 11　p. 1420-1426　2008/11　Research paper (scientific journal)

Elastic constant and Brillouin oscillations in sputtered vitreous SiO2 thin films

H. Ogi, T. Shagawa, N. Nakamura, M. Hirao, H. Odaka, N. Kihara

PHYSICAL REVIEW B　Vol. 78　No. 13　2008/10　Research paper (scientific journal)

Effects of flow rate on sensitivity and affinity in flow injection biosensor systems studied by 55-MHz wireless quartz crystal microbalance

Hirotsugu Ogi, Yuji Fukunishi, Toshinobu Omori, Kenichi Hatanaka, Masahiko Hirao, Masayoshi Nishiyama

Analytical Chemistry　Vol. 80　No. 14　p. 5494-5500　2008/07/15　Research paper (scientific journal)

Detection of Glypican-3 Proteins for Hepatocellular Carcinoma Marker by the Wireless-Electrodeless QCM

H. Ogi, T. Omori, K. Hatanaka, M. Hirao, M. Nishiyama

Jpn. J. Appl. Phys. (2008)　2008/07　Research paper (scientific journal)

Stable elasticity of epitaxial Cu thin films on Si

N. Nakamura, H. Ogi, M. Hirao

Physical Review B - Condensed Matter and Materials Physics　Vol. 77　No. 24　2008/06/11　Research paper (scientific journal)

Detection of glypiean-3 proteins for hepatocellular carcinoma marker using wireless-electrodeless quartz-crystal microbalance

Hirotsugu Ogi, Toshinobu Omori, Kenichi Hatanaka, Masahiko Hirao, Masayoshi Nishiyama

Japanese Journal of Applied Physics　Vol. 47　No. 5 PART 2　p. 4021-4023　2008/05/23　Research paper (scientific journal)

Elastic constants of single-crystal rare-earth bismuth iron garnet films

Nobutomo Nakamura, Hirotsugu Ogi, Masahiko Hirao, Takashi Fukuhara, Kenichi Shiroki, Nobuo Imaizumi

Japanese Journal of Applied Physics　Vol. 47　No. 5 PART 2　p. 3851-3854　2008/05/23　Research paper (scientific journal)

Elastic constants of Co/Pt superlattice studied by acoustic measurements and ab initio calculations

Hiroshi Tanei, Nobutomo Nakamura, Yosuke Kake, Hirotsugu Ogi, Koichi Kusakabe, Masahiko Hirao

Japanese Journal of Applied Physics　Vol. 47　No. 5 PART 2　p. 3847-3850　2008/05/23　Research paper (scientific journal)

Pressure-dependent shear modulus of polycrystalline Al studied by electromagnetic acoustic resonance

Ryuichi Tarumi, Yasunori Kawasaki, Hirotsugu Ogi, Masahiko Hirao, Tomoko Kagayama

Japanese Journal of Applied Physics　Vol. 47　No. 3 PART 1　p. 1763-1766　2008/03/14　Research paper (scientific journal)

A freestanding oscillator for resonant-ultrasound microscopy

Jiayong Tian, Hirotsugu Ogi, Toyokazu Tada, Masahiko Hirao

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control　Vol. 55　No. 2　p. 499-502　2008/02　Research paper (scientific journal)

Unusual elastic behavior of nanocrystalline diamond thin films

H. Tanei, N. Nakamura, H. Ogi, M. Hirao, R. Ikeda

Physical Review Letters　Vol. 100　No. 1　2008/01/11　Research paper (scientific journal)

1506 Measurement of the elastic constant of epitaxial Pt ultrathin films using picosecond-laser ultrasounds

Kake Yosuke, Tanei Hiroshi, Nakamura Nobutomo, Ogi Hirotsugu, Hirao Masahiko

The proceedings of the JSME annual meeting　Vol. 2008　p. 325-326　2008

EMATs for immunosensors

H. Ogi, K. Motohisa, Y. Hoso, K. Hatanaka, T. Ohmori, H. Hirao

AIP Conference Proceedings　Vol. 975　p. 823-827　2008　Research paper (international conference proceedings)

Quantitative imaging of Young's modulus of solids: A contact-mechanics study

H. Ogi, T. Inoue, H. Nagai, M. Hirao

Review of Scientific Instruments　Vol. 79　No. 5　2008　Research paper (scientific journal)

Recovery of elastic constant of ultrathin Cu films by low temperature annealing

N. Nakamura, H. Ogi, T. Shagawa, M. Hirao

Applied Physics Letters　Vol. 92　No. 14　2008　Research paper (scientific journal)

超格子薄膜における異常弾性軟化現象のメカニズム：ピコ秒レーザー超音波による弾性定数測定とマイクロメカニックス解析

中村暢伴, 荻博次, 藤井誠, 安井武史, 平尾雅彦

材料　Vol. 56　No. 10　p. 900-906　2007/10　Research paper (scientific journal)

Anomalous elastic softening in superlattice thin films studied by picosecond-laser ultrasounds and micromechanics modeling

Nobutomo Nakamura, Hirotsugu Ogi, Makoto Fujii, Takeshi Yasui, Masahiko Hirao

Zairyo/Journal of the Society of Materials Science, Japan　Vol. 56　No. 10　p. 900-906　2007/10　Research paper (scientific journal)

超音波共鳴法による薄膜の弾性的性質の評価―銅薄膜の高速回復現象のモニタリング―

中村暢伴, 中島丈雄, 荻博次, 平尾雅彦

日本精密工学会誌，７３巻８号，875-878（2007）　2007/08

Imaging of local stiffness of damaged polycrystalline copper: Nondestructive evaluation by resonance ultrasound microscopy

Hirotsugu Ogi, Noritaka Hayama, Hiroki Niho, Masahiko Hirao, Tomohiro Morishita

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control　Vol. 54　No. 8　p. 1514-1519　2007/08　Research paper (scientific journal)

High-frequency wireless and electrodeless quartz crystal microbalance developed as immunosensor

Hirotsugu Ogi, Kazuma Motohisa, Kenichi Hatanaka, Toshinobu Ohmori, Masahiko Hirao, Masayoshi Nlshiyama

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　Vol. 46　No. 7 B　p. 4693-4697　2007/07/26　Research paper (scientific journal)

Fast recovery of elasticity of Cu thin films at room temperature studied by resonant-ultrasound spectroscopy

Nobutomo Nakamura, Hirotsugu Ogi, Takeo Nakashima, Masahiko Hirao, Masayoshi Nishiyama

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　Vol. 46　No. 7 B　p. 4450-4453　2007/07/26　Research paper (scientific journal)

Mechanism of elastic softening behavior in a superlattice

Nobutomo Nakamura, Hirotsugu Ogi, Takeshi Yasui, Makoto Fujii, Masahiko Hirao

Physical Review Letters　Vol. 99　No. 3　2007/07/19　Research paper (scientific journal)

無線・無電極振動子バイオセンサ

荻博次, 平尾雅彦

化学工業，58, No.8, 605-609 (2007).　2007/07

Concentration dependence of IgG-protein A affinity studied by wireless-electrodeless QCM

Hirotsugu Ogi, Kazuma Motohisa, Kenichi Hatanaka, Toshinobu Ohmori, Masahiko Hirao, Masayoshi Nishiyama

Biosensors and Bioelectronics　Vol. 22　No. 12　p. 3238-3242　2007/06/15　Research paper (scientific journal)

Stiffened ultrathin Pt films confirmed by acoustic-phonon resonances

H. Ogi, M. Fujii, N. Nakamura, T. Yasui, M. Hirao

Physical Review Letters　Vol. 98　No. 19　2007/05/09　Research paper (scientific journal)

2002 Measurement of elastic constants of ultrathin Cu films by laser acoustic-phonon resonance spectroscopy

NAKAMURA Nobutomo, OGI Hirotsugu, Hirao Masahiko

The proceedings of the JSME annual meeting　Vol. 2007　p. 55-56　2007

2607 Elastic constant and reliability evaluation of ultrathin films studied by picosecond laser ultrasounds

Shagawa Tomohiro, Fujii Makoto, Nakamura Nobutomo, Ogi Hirotsugu, Hirao Masahiko

The proceedings of the JSME annual meeting　Vol. 2007　p. 527-528　2007

Study on elastic property of thin films by resonant-ultrasound spectroscopy -monitoring of fast recovery of Cu thin film-

Nobutomo Nakamura, Takeo Nakashima, O. G.I. Hirotsugu, Masahiko Hirao

Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering　Vol. 73　No. 8　p. 875-878　2007　Research paper (scientific journal)

Complete set of elastic and piezoelectric coefficients of α -quartz at low temperatures

Ryuichi Tarumi, Koichi Nakamura, Hirotsugu Ogi, Masahiko Hirao

Journal of Applied Physics　Vol. 102　No. 11　2007　Research paper (scientific journal)

Resonance acoustic-phonon spectroscopy for studying elasticity of ultrathin films

H. Ogi, M. Fujii, N. Nakamura, T. Shagawa, M. Hirao

Applied Physics Letters　Vol. 90　No. 19　2007　Research paper (scientific journal)

Elastic properties of Cu-based bulk metallic glass around glass transition temperature

R. Tarumi, H. Ogi, M. Hirao, T. Ichitsubo, E. Matsubara, J. Saida

Materials Science Forum　Vol. 539-543　No. PART 2　p. 1932-1936　2007　Research paper (international conference proceedings)

Elastic anisotropy of an Fe79 Si12 B9 amorphous alloy thin film studied by ultrasound spectroscopy

Ryuichi Tarumi, Akira Shibata, Hirotsugu Ogi, Masahiko Hirao, Kazuki Takashima, Yakichi Higo

Journal of Applied Physics　Vol. 101　No. 5　2007　Research paper (scientific journal)

Low temperature elastic and anelastic properties of an i-AlPdMn single quasicrystal

R. Tarumi, Y. Yoshimoto, S. Shiomi, H. Ogi, M. Hirao, A. P. Tsai

Materials Science and Engineering A　Vol. 442　No. 1-2 SPEC. ISS.　p. 39-42　2006/12/20　Research paper (scientific journal)

Ultrasonic attenuation and microstructural evolution throughout tension-compression fatigue of a low-carbon steel

T. Ohtani, K. Nishiyama, S. Yoshikawa, H. Ogi, M. Hirao

Materials Science and Engineering A　Vol. 442　No. 1-2 SPEC. ISS.　p. 466-470　2006/12/20　Research paper (scientific journal)

Relationship between elastic constants and microstructure of nanocrystalline CVD diamond thin films

Hiroshi Tanei, Nobutomo Nakamura, Hirotsugu Ogi, Ryuji Ikeda, Masahiko Hirao, Mikio Takemoto

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 72　No. 12　p. 1819-1824　2006/12　Research paper (scientific journal)

Isolated electrodeless high-frequency quartz crystal microbalance for immunosensors

Hirotsugu Ogi, Kazuma Motoshisa, Takashi Matsumoto, Kenichi Hatanaka, Masahiko Hirao

Analytical Chemistry　Vol. 78　No. 19　p. 6903-6909　2006/10/01　Research paper (scientific journal)

段付丸棒における軸対称SH波のトラップ ＝無線・無電極表面SH波振動子＝

本久和磨, 荻博次, 平尾雅彦

超音波テクノ, 18-5, (2006) 87-91.　2006/09

Elastic-stiffness distribution on dual-phase stainless steel studied by resonance ultrasound microscopy

Hirotsugu Ogi, Hiroki Niho, Masahiko Hirao

Acta Materialia　Vol. 54　No. 16　p. 4143-4148　2006/09　Research paper (scientific journal)

共鳴超音波スペクトロスコピー/レーザ法を利用したダイヤモンド膜の弾性スティフネス測定

池田隆二, 多根井寛志, 中村暢伴, 荻 博次, 竹本幹男

超音波テクノ　2006/08

薄膜の異方性弾性定数測定～銅薄膜の弾性異方性と内部組織～

中村暢伴, 荻 博次, 平尾雅彦

超音波テクノ　2006/08

荻博次，中村暢伴，平尾雅彦

荻博次, 中村暢伴, 平尾雅彦

金属　2006/06

薄膜の弾性定数を精度よく測る方法―RUS/レーザー法とレーザーピコ秒超音波法―

荻 博次, 中村暢伴, 平尾雅彦

金属, Vol.76, No.6, pp.57-63 (2006)　2006/06

共振ヤング率顕微鏡―局所弾性的性質の可視化―

荻 博次, 平尾雅彦

金属, Vol.76, No.6 pp.50-56 (2006)　Vol. 76　No. 6　p. 664-670　2006/06

Evolution of microstructure and acoustic damping during creep of a Cr-Mo-V ferritic steel

Toshihiro Ohtani, Hirotsugu Ogi, Masahiko Hirao

Acta Materialia　Vol. 54　No. 10　p. 2705-2713　2006/06　Research paper (scientific journal)

Electromagnetic acoustic resonance to assess creep damage in Cr-Mo-V steel

Toshihiro Ohtani, Hirotsugu Ogi, Masahiko Hirao

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　Vol. 45　No. 5 B　p. 4526-4533　2006/05/25　Research paper (scientific journal)

Effects of dissolved and ambient gases on sonochemical degradation of methylene blue in high-amplitude resonant mode

Hirotsugu Ogi, Yusuke Tomiyama, Yusuke Shoji, Tomoo Mizugaki, Masahiko Hirao

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　Vol. 45　No. 5 B　p. 4678-4683　2006/05/25　Research paper (scientific journal)

Magnetic phase transition and elastic properties of α-Mn at low temperature

Ryuichi Tarumi, Yasunori Kawasaki, Yasuhiro Tabe, Hirotsugu Ogi, Masahiko Hirao, Tomoko Kagayama

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　Vol. 45　No. 5 B　p. 4497-4499　2006/05/25　Research paper (scientific journal)

Study of elastic anisotropy of Cu thin films by resonant-ultrasound spectroscopy coupled with laser-doppler interferometry and pump-probe photoacoustics

Nobutomo Nakamura, Hirotsugu Ogi, Hiroki Nitta, Hiroshi Tanei, Makoto Fujii, Takeshi Yasui, Masahiko Hirao

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　Vol. 45　No. 5 B　p. 4580-4584　2006/05/25　Research paper (scientific journal)

Magnetic phase transition and elastic properties of alpha-Mn at low temperature

Tarumi R, Kawasaki Y, Tabe Y, Ogi H, Hirao M, Kagayama T

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 45　No. 5　p. 4497-4499　2006/05　Research paper (scientific journal)

Acoustic damping characterization and microstructure evolution during creep of a high temperature bolting steel

Toshihiro Ohtani, Hirotsugu Ogi, Masahiko Hirao

Zairyo/Journal of the Society of Materials Science, Japan　Vol. 55　No. 4　p. 416-423　2006/04　Research paper (scientific journal)

Internal-friction mapping on solids by resonance ultrasound microscopy

H. Ogi, H. Niho, M. Hirao

Applied Physics Letters　Vol. 88　No. 14　2006/04　Research paper (scientific journal)

高温用合金鋼ボルト材のクリープ損傷にともなう超音波減衰特性と材料微 視組織の変化

大谷俊博, 荻 博次, 平尾雅彦

材料, Vol.55, No.4, pp.416-423 (2006)　Vol. 55　No. 4　p. 416-423　2006/04　Research paper (scientific journal)

Elastic constant of nanocrystalline diamond film

R. Ikeda, H. Tanei, N. Nakamura, H. Ogi, M. Hirao, A. Sawabe, M. Takemoto

Diamond and Related Materials　Vol. 15　No. 4-8　p. 729-734　2006/04　Research paper (scientific journal)

2821 Monitoring of Fatigue Damage in Low-Carbon Steel with Electromagnetic Acoustic Resonance

OHTANI Toshihiro, NISHYAMA Kikuo, YOSHIKAWA Shigeru, OGI Hirotsugu, HIRAO Masahiko

The proceedings of the JSME annual meeting　Vol. 2006　p. 291-292　2006

Elastic-stiffness distribution on polycrystalline Cu studied by resonance ultrasound microscopy: Young's modulus microscopy

H. Ogi, M. Hirao, T. Tada, J. Tian

Physical Review B - Condensed Matter and Materials Physics　Vol. 73　No. 17　2006　Research paper (scientific journal)

Elastic, anelastic, and piezoelectric coefficients of α-quartz determined by resonance ultrasound spectroscopy

Hirotsugu Ogi, Toshinobu Ohmori, Nobutomo Nakamura, Masahiko Hirao

Journal of Applied Physics　Vol. 100　No. 5　2006　Research paper (scientific journal)

Advanced resonant ultrasound spectroscopy for measuring anisotropic elastic constants of thin films

Hirotsugu Ogi, N. Nakamura, M. Hirao

Fatigue and Fracture of Engineering Materials and Structures　Vol. 28　No. 8　p. 657-663　2005/08　Research paper (scientific journal)

Quantitative evaluation of local young's modulus of small-scale solids by isolated langasite oscillator: Resonant-ultrasound microscopy

H. Ogi, J. Tian, T. Tada, M. Hirao

AIP Conference Proceedings　Vol. 760　p. 882-888　2005/04　Research paper (international conference proceedings)

Elastic constants of Co/Pt nano-multilayers by resonance ultrasound spectroscopy

N. Nakamura, H. Ogi, T. Ono, M. Hirao

AIP Conference Proceedings　Vol. 760　p. 1145-1150　2005/04　Research paper (international conference proceedings)

電磁超音波共鳴法による金属材料の低温弾性特性の評価

垂水竜一, 荻博次, 平尾雅彦

超音波TECHNO　2005/03

超音波反応系の共鳴モードと水中有機化合物の高効率分解

冨山優介, 荻 博次, 平尾雅彦

超音波テクノ, Vol.17, No.2, pp.33-36　2005/03

Acoustic study of kinetics of vacancy diffusion toward dislocations in aluminum

Hirotsugu Ogi, Akihiro Tsujimoto, Shigeyuki Nishimura, Masahiko Hirao

Acta Materialia　Vol. 53　No. 2　p. 513-517　2005/01/10　Research paper (scientific journal)

Elastic constants and graphitic grain boundaries of nanocrystalline CVD-diamond thin films: Resonant ultrasound spectroscopy and micromechanics calculation

Hirotsugu Ogi, Nobutomo Nakamura, Hiroshi Tanei, Ryuji Ikeda, Masahiko Hirao, Mikio Takemoto

Materials Research Society Symposium Proceedings　Vol. 875　p. 15-20　2005　Research paper (international conference proceedings)

Ultrasonic attenuation peak during creep of a nickel-base superalloy with electromagnetic acoustic resonance

Toshihiro Ohtani, Hirotsugu Ogi, Masahiko Hirao

Zairyo/Journal of the Society of Materials Science, Japan　Vol. 53　No. 6　p. 692-698　2004/06　Research paper (scientific journal)

電磁超音波共鳴法によるNi基耐熱合金のクリープ損傷と超音波減衰ピーク

大谷俊博, 荻 博次, 平尾雅彦

材料, Vol.53, No.6, 2004, pp.692-698　Vol. 53　No. 6　p. 692-698　2004/06　Research paper (scientific journal)

Elastic stiffness and ultrasonic attenuation of superconductor MgB2 at low temperatures (vol 66, art no 052514, 2002)

T Ichitsubo, H Ogi, S Nishimura, T Seto, M Hirao, H Inui

PHYSICAL REVIEW B　Vol. 69　No. 9　2004/03　Research paper (scientific journal)

Electromagnetic Acoustic Resonance to Assess Creep Damage in an Austenitic Stainless Steel

OHTANI Toshihiro, OGI Hirotsugu, HIRAO Masahiko

Proceedings of the 1992 Annual Meeting of JSME/MMD　Vol. 2004　p. 551-552　2004

Anisotropic elastic constants of lotus-structured porous metals

M. Tane, T. Ichitsubo, H. Ogi, M. Hirao, T. Ikeda, H. Nakajima

Cellular Metals: Manufacture, Properties and Applications (Eds: J. Banhart, N. Fleck, and A. Mortensen)　2003/12　Research paper (international conference proceedings)

Elastic anisotropy and incohesive bond of chemical-vapor-deposition diamond film: Acoustic resonance measurements and micromechanics modeling

Nobutomo Nakamura, Hirotsugu Ogi, Tetsu Ichitsubo, Masahiko Hirao, Natsuo Tatsumi, Takahiro Imai, Hideaki Nakahata

Journal of Applied Physics　Vol. 94　No. 10　p. 6405-6410　2003/11/15　Research paper (scientific journal)

Anisotropic Elastic Constants of Lotus-structured Porous Copper

M.Tane, T. Ichitsubo, H. Ogi, M. Hirao, T. Ikeda, H. Nakajima

Journal of Japan Research Institute for Advanced Copper-base Materials and Technologies　Vol. 42　No. 1　p. 83-86　2003/10　Research paper (scientific journal)

異方性微小固体の全ての弾性定数と圧電定数を一つの試料から決定する方法 ～モード特定共鳴超音波スペクトロスコピー～

荻博次, 中村暢伴, 平尾雅彦

超音波テクノ　2003/07

非接触超音波スペクトロスコピー：回転曲げ疲労の余寿命評価

平尾雅彦, 荻博次

超音波テクノ, Vol.15, No.2, 2003, pp.73-78　2003/07

異方性微小固体の全ての弾性定数と圧電定数を一つの試料から決定する方法 ～モード特定共鳴超音波スペクトロスコピー～

荻博次, 中村暢伴, 平尾雅彦

超音波テクノ,15,60-65, (2003).　2003/07

Erratum: Elastic-stiffness coefficients of a silicon carbide fibre at elevated temperatures: Acoustic spectroscopy and micromechanics modelling (Philosophical Magazine (2003) 83:4 (503-512))

H. Ogi, S. Kai, T. Ichitsubo, M. Hirao, K. Takashima

Philosophical Magazine　Vol. 83　No. 14　2003/05/11　Research paper (scientific journal)

Increase of Efficiency of Magnetostriction SH-Wave EMAT by Angled Bias Field: Piezomagnetic Theory and Measurement

H. Ogi, E. Goda, M. Hirao

Jpn. J. Appl. Phys., 42, pp. 3020-3024　2003/05　Research paper (scientific journal)

電磁超音波計測による炭素鋼回転曲げ疲労の研究～き裂発生と転位組織変化の非接触モニタリング～

荻博次, 平尾雅彦

材料, Vol.52, No.3, 2003, pp.628267-272　2003/04

Electromagnetic-acoustic-resonance study on fatigue of metals - Noncontact monitoring of crack initiation and dislocation-structure change

Hirotsugi Ogi, Masahiko Hirao

Zairyo/Journal of the Society of Materials Science, Japan　Vol. 52　No. 3　p. 267-272　2003/03　Research paper (scientific journal)

Elastic-stiffness coefficients of a silicon carbide fibre at elevated temperatures: Acoustic spectroscopy and micromechanics modelling

H. Ogi, S. Kai, T. Ichitsubo, M. Hirao, K. Takashima

Philosophical Magazine　Vol. 83　No. 4　p. 503-512　2003/02/01　Research paper (scientific journal)

Measurement of elastic constants of copper thin films and microstructure evaluation by acoustic-resonance method

NAKAMURA Nobutomo, KOBAYASHI Yuka, OGI Hirotsugu, HIRAO Masahiko

Proceedings of the 1992 Annual Meeting of JSME/MMD　Vol. 2003　p. 439-440　2003

Brightened single-bubble sonoluminescence by phase-adjusted high-frequency acoustic pulse

Hirotsugu Ogi, Atsushi Matsuda, Kayo Wada, Masahiko Hirao

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics　Vol. 67　No. 5　2003　Research paper (scientific journal)

Elastic-stiffness tensor of a single SiC fiber at elevated temperatures

Ogi H, Kai S, Ichitsubo T, t al

Nondestructive Characterization of Materials Xi　2003　Research paper (scientific journal)

Anisotropic elastic constants of unidirectional porous copper measured with resonance ultrasound spectroscopy

Ichitsubo T, Tane M, Ogi H, et al

Nondestructive Characterization of Materials Xi　2003　Research paper (scientific journal)

Elastic stiffness and ultrasonic attenuation of superconductor MgB<inf>2</inf> at low temperatures

T. Ichitsubo, H. Ogi, S. Nishimura, T. Seto, M. Hirao, H. Inui

Physical Review B - Condensed Matter and Materials Physics　Vol. 66　No. 5　p. 525141-525144　2002/08/01　Research paper (scientific journal)

Change of ultrasonic attenuation and microstructure evolution in crept 2.25%Cr-1%Mo steels

Toshihiro Ohtani, Hirotsugu Ogi, Masahiko Hirao

Zairyo/Journal of the Society of Materials Science, Japan　Vol. 51　No. 2　p. 195-201　2002/02　Research paper (scientific journal)

Measurement of the elastic-stiffness tensor of SiC_f/Ti composites at elevated temperatures and nondestructive evaluation of disbonding

Kai Satoshi, Ogi Hirotsugu, Ichitsubo Tetsu, Hirao Masahiko, Takashima Kazuki

Proceedings of the 1992 Annual Meeting of JSME/MMD　Vol. 2002　p. 405-406　2002

Change of Ultrasonic Attenuation and Microstructure Evolution in Crept 2.25%Cr-1%Mo Steels

OHTANI Toshihiro, OGI Hirotsugu, HIRAO Masahiko

Proceedings of the 1992 Annual Meeting of JSME/MMD　Vol. 2002　p. 423-424　2002

Elastic constants of lotus-type porous metal : measurement and micromechanics modeling

TANE Masakazu, ICHITSUBO Tetsu, OGI Hirotsugu, HIRAO Masahiko, NAKAJIMA Hideo

Proceedings of the 1992 Annual Meeting of JSME/MMD　Vol. 2002　p. 73-74　2002

Anisotropic Elastic-Stiffness Tensor of an Ni-P Amorphous-Alloy Thin Film and Micromechanics Modeling for Evaluating Film's Microstructure

OGI Hirotsugi, HIRAO Masahiko, SHIMOIKE Goh, TAKASHIMA Kazuki

Proceedings of the 1992 Annual Meeting of JSME/MMD　Vol. 2002　p. 71-72　2002

Change in elastic constants with thermal embrittlement of duplex stainless steel

T. Ichitsubo, M. Tane, H. Ogi, M. Hirao

Proc. of 10th Aisa-Pacific Conference on Non-Destructive Testing (2001)　2001/09　Research paper (scientific journal)

Nondestructive evaluation of disbonding area in chip scale packages using resonance ultrasound spectroscopy

M.Hirao, K. Sato, H.Ogi, T. Miya

Proc. of 10th Aisa-Pacific Conference on Non-Destructive Testing (2001)　2001/09

Elastic-Stiffness Tensor of Metal-Matrix Composites Measured by Electromagnetic Acoustic Resonance

H.Ogi, G.Shimoike, M.Hirao, K.Takashima, H.Ledbetter

Nondestructive Characterization of Materials X, pp.69-74, 2001　2001/06　Research paper (scientific journal)

Contactless measurement of bolt axial stress using a shear-wave electromagnetic acoustic transducer

M. Hirao, H. Ogi, H. Yasui

NDT and E International　Vol. 34　No. 3　p. 179-183　2001/04　Research paper (scientific journal)

Changes of ultrasonic attenuation and microstructure evolution in crept stainless steels

Toshihiro Ohtani, Hirotsugu Ogi, Masahiko Hirao

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 67　No. 655　p. 454-461　2001　Research paper (scientific journal)

Measurement of elastic stiffness tensor of an SiC<inf>f</inf>/Ti cross-ply composite at elevated temperatures

Goh Shimoike, Hirotsugu Ogi, Kazuki Takashima, Masahiko Hirao

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　Vol. 64　No. 7　p. 495-501　2000　Research paper (scientific journal)

Ultrasonic attenuation peak in steel and aluminum alloy during rotating bending fatigue

Hirotsugu Ogi, Takayuki Hamaguchi, Masahiko Hirao

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science　Vol. 31　No. 4　p. 1121-1128　2000　Research paper (scientific journal)

Electromagnetic acoustic resonance to assess creep damage in 2.25 Cr-1 Mo steels

Toshihiro Ohtani, Hirotsugu Ogi, Tomohiro Morishita, Masahiko Hirao

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　Vol. 65　No. 636　p. 1802-1809　1999　Research paper (scientific journal)

Electromagnetic Acoustic Resonance and Materials Characterization

M.Hirao, H.Ogi

Ultrasonics, 35,413-421　Vol. 41　No. 9　p. 628-634　1997/08　Research paper (scientific journal)

Electromagnetic acoustic resonance for studying dislocation formation in polycrystalline pure copper during deformation

H. Ogi, N. Suzuki, M. Hirao

Proceedings of the IEEE Ultrasonics Symposium　Vol. 1　p. 507-510　1997　Research paper (international conference proceedings)