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Comparison of near-field light intensities: plasmon nanofocusing versus localized plasmon resonance
Tongyao Li, Andrea Schirato, Taku Suwabe, Remo Proietti Zaccaria, Prabhat Verma, Takayuki Umakoshi*
Optics Express Vol. 33 No. 13 p. 26930-26930 2025年6月16日 研究論文（学術雑誌）
出版者・発行元：
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Imaging vs Nonimaging Raman Spectroscopy for High-Throughput Single-Cell Phenotyping
Alison J. Hobro, Nicolas Pavillon, Kota Koike, Takeshi Sugiyama, Takayuki Umakoshi, Prabhat Verma, Katsumasa Fujita, Nicholas I. Smith
Analytical Chemistry Vol. 96 No. 18 p. 7047-7055 2024年4月23日 研究論文（学術雑誌）
出版者・発行元：American Chemical Society (ACS)
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In Situ Real-Time Observation of Photoinduced Nanoscale Azo-Polymer Motions Using High-Speed Atomic Force Microscopy Combined with an Inverted Optical Microscope
Keishi Yang, Feng-Yueh Chan, Hiroki Watanabe, Shingo Yoshioka, Yasushi Inouye, Takayuki Uchihashi, Hidekazu Ishitobi, Prabhat Verma, Takayuki Umakoshi*
Nano Letters Vol. 24 No. 9 p. 2805-2811 2024年2月26日 研究論文（学術雑誌）
出版者・発行元：American Chemical Society (ACS)
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Near-field optical microscopy toward its applications for biological studies
Takayuki Umakoshi
Biophysics and Physicobiology Vol. 20 No. 1 p. e200011-n/a 2023年3月 研究論文（学術雑誌）
出版者・発行元：
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Raman Spectroscopic and DFT Study of COA-Cl and Its Analogues
Takayuki Umakoshi*, Takumi Urakami, Haruki Kidoguchi, Keishi Yang, Prabhat Verma, Hirofumi Sato, Masahiro Higashi, Ikuko Tsukamoto*
The Journal of Physical Chemistry A Vol. 127 No. 8 p. 1849-1856 2023年2月21日 研究論文（学術雑誌）
出版者・発行元：
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Numerical characterization of optical properties of tapered plasmonic structure on a cantilever pyramidal tip for plasmon nanofocusing
Ravi Yadav, Takayuki Umakoshi, Prabhat Verma*
AIP Advances Vol. 12 No. 12 p. 085216-085216 2022年8月 研究論文（学術雑誌）
出版者・発行元：
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Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS 2 layers
Ryo Kato, Toki Moriyama, Takayuki Umakoshi*, Taka-aki Yano, Prabhat Verma*
Science Advances Vol. 8 No. 28 2022年7月15日 研究論文（学術雑誌）
出版者・発行元：
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Nanoscale optical switching of photochromic material by ultraviolet and visible plasmon nanofocusing
Takayuki Umakoshi*, Hiroshi Arata, Prabhat Verma
arXiv 2022年7月
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Tip-enhanced Raman spectroscopy with amplitude-controlled tapping-mode AFM
Takayuki Umakoshi*, Koji Kawashima, Toki Moriyama, Ryo Kato, Prabhat Verma
Scientific Reports Vol. 125 2022年7月
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Raman Spectroscopic Nanoimaging of Optical Fields of Metal Nanostructures with a Chemically Modified Metallic Tip
Ryo Kato, Takayuki Umakoshi, Prabhat Verma
The Journal of Physical Chemistry C Vol. 125 No. 125 p. 20397-20404 2021年9月 研究論文（学術雑誌）
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Polarization Raman Imaging of Organic Monolayer Islands for Crystal Orientation Analysis
Toki Moriyama, Takayuki Umakoshi*, Yoshiaki Hattori*, Koki Taguchi, Prabhat Verma, Masatoshi Kitamura
ACS Omega No. 6 p. 9520-9527 2021年3月 研究論文（学術雑誌）
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Broadband plasmon nanofocusing: Comprehensive study of broadband nanoscale light source
Koki Taguchi, Takayuki Umakoshi*, Shota Inoue, Prabhat Verma
The Journal of Physical Chemistry C Vol. 125 No. 125 p. 6378-6386 2021年3月 研究論文（学術雑誌）
出版者・発行元：
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Label-free Raman mapping of saturated and unsaturated fatty acid uptake, storage, and return toward baseline levels in macrophages
Takeshi Sugiyama, Alison J. Hobro, Nicolas Pavillon, Takayuki Umakoshi, Prabhat Verma, Nicholas Smith
Analyst Vol. 146 No. 146 p. 1268-1280 2021年2月 研究論文（学術雑誌）
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Probing stacking configurations in a few layered MoS2 by low frequency Raman spectroscopy
Rhea Thankam Sam, Takayuki Umakoshi, Prabhat Verma
Scientific Reports Vol. 10 No. 10 2020年12月 研究論文（学術雑誌）
出版者・発行元：
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One-side metal-coated pyramidal cantilever tips for highly reproducible tip-enhanced Raman spectroscopy
Ryo Kato, Koki Taguchi, Ravi Yadav, Takayuki Umakoshi*, Prabhat Verma
Nanotechnology Vol. 31 No. 33 p. 335207-335207 2020年8月14日 研究論文（学術雑誌）
出版者・発行元：IOP Publishing
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Defect-related anomalous low-frequency Raman scattering in a few-layered MoS2
Rhea Thankam Sam, Takayuki Umakoshi, Prabhat Verma*
Applied Physics Express Vol. 13 No. 7 p. 072003-072003 2020年7月1日 研究論文（学術雑誌）
出版者・発行元：IOP Publishing
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Tip-Enhanced Raman Spectroscopy of Multiwalled Carbon Nanotubes through D-Band Imaging: Implications for Nanoscale Analysis of Interwall Interactions
Ryo Kato, Shun Igarashi, Takayuki Umakoshi, Prabhat Verma*
ACS Applied Nano Materials Vol. 3 No. 6 p. 6001-6008 2020年6月26日 研究論文（学術雑誌）
出版者・発行元：American Chemical Society (ACS)
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White nanolight source for optical nanoimaging
Takayuki Umakoshi*, Misaki Tanaka, Yuika Saito, Prabhat Verma*
Science Advances Vol. 6 No. 23 p. eaba4179-eaba4179 2020年6月 研究論文（学術雑誌）
出版者・発行元：American Association for the Advancement of Science (AAAS)
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Anharmonic effects in single-walled carbon nanotubes analyzed through low-temperature Raman imaging
Takayuki Umakoshi, Masaki Taniguchi, Prabhat Verma
The Journal of Physical Chemistry C No. 124 p. 6922-6928 2020年3月 研究論文（学術雑誌）
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High-speed near-field fluorescence microscopy combined with high-speed atomic force microscopy for biological studies.
Takayuki Umakoshi, Shingo Fukuda, Ryota Iino, Takayuki Uchihashi, Toshio Ando
BBA General Subjects Vol. 1864 No. 2 2020年2月
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Probing inter-molecular interactions of dinaphthothienothiophene (DNTT) molecules in a transistor device using low-frequency Raman spectroscopy
Bishwajeet Singh Bhardwaj, Rhea Thankam Sam, Takayuki Umakoshi, Naoko Namba, Takafumi Uemura, Tsuyoshi Sekitani, Prabhat Verma
Applied Physics Express No. 13 2020年1月
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Orientation analysis of pentacene molecules in organic field-effect transistor devices using polarization-dependent Raman spectroscopy
Bishwajeet Singh Bhardwaj, Takeshi Sugiyama, Naoko Namba, Takayuki Umakoshi, Takafumi Uemura, Tsuyoshi Sekitani, Prabhat Verma
Scientific Reports No. 9 2019年10月
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Raman Spectroscopic Studies of Dinaphthothienothiophene (DNTT)
Bishwajeet Singh Bhardwaj, Takeshi Sugiyama, Naoko Namba, Takayuki Umakoshi, Takafumi Uemura, Tsuyoshi Sekitani, Prabhat Verma
Materials Vol. 12 No. 4 2019年
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Probing nanoscale defects and wrinkles in MoS2 by tip-enhanced Raman spectroscopic imaging
Ryo Kato, Takayuki Umakoshi*, Rhea Thankam Sam, Prabhat Verma
Applied Physics Letters No. 114 2019年
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Tapered arrangement of metallic nanorod chains for magnified plasmonic nanoimaging
Yoshiro Ohashi, Bikas Ranjan, Yuika Saito, Takayuki Umakoshi, Prabhat Verma
Scientific Reports No. 9 2019年
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Quantum-dot antibody conjugation visualized at the single-molecule scale with high-speed atomic force microscopy
Takayuki Umakoshi, Hikari Udaka, Takayuki Uchihashi, Toshio Ando, Miho Suzuki, Takeshi Fukuda
Colloids and Surfaces B: Biointerfaces Vol. 167 No. 167 p. 267-274 2018年7月1日 研究論文（学術雑誌）
出版者・発行元：Elsevier B.V.
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Metallic tips for efficient plasmon nanofocusing and advanced optical nano-imaiging
Takayuki Umakoshi, Yuika Saito, Prabhat Verma
Proc. of SPIE Vol. 10726 No. 10726-6 2018年 研究論文（国際会議プロシーディングス）
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Plasmonic transfer of near-field light from subwavelength objects through a gold-nanorod chain
Yoshiro Ohashi, Bikas Ranjan, Yuika Saito, Takayuki Umakoshi, Prabhat Verma
Applied Physics Express No. 11 2018年 研究論文（学術雑誌）
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Near-field visible light absorption imaging by Raman-nano-light source
Ryo Kato, Yuika Saito, Takayuki Umakoshi, Prabhat Verma
Proceedings of SPIE - The International Society for Optical Engineering Vol. 10350 No. 103500S 2017年 研究論文（国際会議プロシーディングス）
出版者・発行元：SPIE
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Highly efficient plasmonic tip design for plasmon nanofocusing in near-field optical microscopy
Takayuki Umakoshi, Yuika Saito, Prabhat Verma
Nanoscale Vol. 8 No. 10 p. 5634-5640 2016年 研究論文（学術雑誌）
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A new technique for fabrication of better metallic nanotips for nanoimaging through tip-enhanced Raman spectroscopy
Takayuki Umakoshi, Taka-aki Yano, Yuika Saito, Prabhat Verma
Proc. of SPIE Vol. 88150O No. 8815 2013年 研究論文（国際会議プロシーディングス）
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Fabrication of Near-Field Plasmonic Tip by Photoreduction for Strong Enhancement in Tip-Enhanced Raman Spectroscopy
Takayuki Umakoshi, Taka-aki Yano, Yuika Saito, Prabhat Verma
Applied Physics Express Vol. 5 No. 5 2012年5月 研究論文（学術雑誌）
