Takayuki Umakoshi - Publication

Original Papers

34. H. Matsui, C. Ganser, K. Tamaki, Q. Liu, F.Y. Chan, T. Uchihashi, P. Verma, Y. Sagara, S. Yagai, T. Umakoshi*,

“Tip-scan high-speed atomic force microscopy in organic solvent: A versatile tool for visualizing dynamic behaviors of soft-materials,”

ChemRxiv, (2025). doi:10.26434/chemrxiv-2025-z5rnr.

33. T. Umakoshi*, H. Arata, and P. Verma,

"Nanoscale optical switching of photochromic material by ultraviolet and visible plasmon nanofocusing"

arXiv, 2207.12839 (2022).

2025

32. T. Umakoshi*,

"Recent advances in near-field optical microscopy"

JSAP Review, 2025, 250418 (2025).

31. T. Li, A. Schirato, T. Suwabe, R. P. Zaccaria, P. Verma, and T. Umakoshi*,

“Comparison of near-field light intensities: plasmon nanofocusing versus localized plasmon resonance”

Optics Express, 33, 26930-26938 (2025).

2024

30. A. J. Hobro*, N. Pavillon, K. Koike, T. Sugiyama, T. Umakoshi, P. Verma, K. Fujita, and N. I. Smith*,

“Imaging vs Nonimaging Raman Spectroscopy for High-Throughput Single-Cell Phenotyping”,

Analytical Chemistry, 96, 7047−7055 (2024).

29. K. Yang, FY Chan, H. Watanabe, S. Yoshioka, Y. Inouye, T. Uchihashi, H. Ishitobi, P. Verma, and T. Umakoshi*,

"In-situ real-time observation of photo-induced nanoscale azo-polymer motions using high-speed atomic force microscopy combined with an inverted optical microscope"

Nano Letters, 24, 2805-2811 (2024).

*press released in

*featured in

2023

28. T. Umakoshi*,

"Near-field optical microscopy toward its applications for biological studies",

Biophysics and Physicobiology, 20 e200011 (2023).

27. T. Umakoshi*, T. Urakami, H. Kidoguchi, K. Yang, P. Verma, H. Sato, M. Higashi, and I. Tsukamoto*,

“Raman Spectroscopic and DFT Study of COA-Cl and Its Analogues”

The Journal of Physical Chemistry A, 127, 1849−1856 (2023).

2022

26. R. Yadav, T. Umakoshi, and P. Verma*,

"Numerical characterization of optical properties of tapered plasmonic structure on a cantilever pyramidal tip for plasmon nanofocusing"

AIP Advances, 12, 085216 (2022).

25. T. Umakoshi*, K. Kawashima, T. Moriyama, R. Kato, and P. Verma,

“Tip-enhanced Raman spectroscopy with amplitude-controlled tapping-mode AFM”

Scientific Reports, 12, 12776 (2022).

24. R. Kato, T. Moriyama, T. Umakoshi*, T. Yano, and P. Verma*,

“Ultrastable tip-enhanced heperspectral optical nanoimaging for defect analysis of large-sized WS2 layers”

Science Advances, 8, eabo4021 (2022).

*press released in

JST プレスリリース

阪大プレスリリース

*featured in

Optics & Photonics News by Optica

Phys.org

2021

23. R. Kato, T. Umakoshi, and P. Verma*.

“Raman spectroscopic nanoimaging of optical fields of metal nanostructures with a chemically modified metallic tip”

The Journal of Physical Chemistry C, 125, 20397-20404 (2021).

22. T. Moriyama, T. Umakoshi*, Y. Hattori*, K. Taguchi, P. Verma, and M. Kitamura.

“Polarization Raman imaging of organic monolayer islands for crystal orientation analysis”

ACS Omega, 6, 9520-9527 (2021).

21. K. Taguchi, T. Umakoshi*, S. Inoue, and P. Verma.

“Broadband plasmon nanofocusing: Comprehensive study of broadband nanoscale light source”

The Journal of Physical Chemistry C, 125, 6378-6386 (2021).

20. T. Sugiyama, A. J. Hobro*, N. Pavillon, T. Umakoshi, P. Verma, and N. Smith*,

"Label-free Raman mapping of saturated and unsaturated fatty acid uptake, storage, and return toward baseline levels in macrophages"

Analyst, 146, 1268 (2021).

2020

19. R. T. Sam, T. Umakoshi, and P. Verma*

"Probing stacking configurations in a few layered MoS2 by low frequency Raman spectroscopy"

Scientific Reports, 10, 21227 (2020).

18. R. T. Sam, T. Umakoshi, and P. Verma*

"Defect-related anomalous low-frequency Raman scattering in a few-layered MoS2"

Applied Physics Express, 13, 072003 (2020).

17. R. Kato, S. Igarashi, T. Umakoshi, and P. Verma*

"Tip-enhanced Raman Spectroscopy of Multi-Walled Carbon Nanotubes through D-band Imaging: Implications for Nanoscale Analysis of Interwall Interactions"

ACS Appl. Nano Mater., 6, 6001-6008 (2020).

16. R. Kato, K. Taguchi, Y. Ravi, T. Umakoshi*, and P. Verma

"One-side metal-coated pyramidal cantilever tips for highly reproducible tip-enhanced Raman spectroscopy"

Nanotechnology, 31, 335207 (2020).

15. T. Umakoshi*, M. Tanaka, Y. Saito, and P. Verma*

"White nano light source for optical nanoimaging",

Science Advances, 6(23), eaba4179 (2020).

*Phys.orgに記事が掲載されました。

14. T. Umakoshi#, M. Taniguchi#, and P. Verma*

"Anharmonic effects in single-walled carbon nanotubes analyzed through low-temperature Raman imaging",

The Journal of Physical Chemistry C, 124(12), 6922-6928 (2020).

#contributed equally

13. B. S. Bhardwaj, R. T. Sam, T. Umakoshi, N. Namba, T. Uemura, T. Sekitani, and P. Verma*,

“Probing inter-molecular interactions of dinaphthothienothiophene (DNTT) molecules in a transistor device using low-frequency Raman spectroscopy”,

Applied Physics Express, 13, 022010 (2020).

12. T. Umakoshi#, S. Fukuda#, R. Iino, T. Uchihashi, and T. Ando*,

"High-speed near-field fluorescence microscopy combined with high-speed atomic force microscopy for biological studies"

BBA General Subjects, 1864, 129325 (2020).

#contributed equally

2019

11. B. S. Bhardwaj#, T. Sugiyama#, N. Namba, T. Umakoshi, T. Uemura, T. Sekitani, and P. Verma*,

"Orientation analysis of pentacene molecules in organic field-effect transistor devices using polarization-dependent Raman spectroscopy"

Scientific Reports, 9, 15149 (2019).

#contributed equally

10. B. S. Bhardwaj, T. Sugiyama, N. Namba, T. Umakoshi, T. Uemura, T. Sekitani, and P. Verma*,

"Raman spectroscopic studies of Dinaphthothienothiophene (DNTT)"

Materials, 12, 615 (2019).

9. R. Kato, T. Umakoshi*, R. T. Sam, and P. Verma,

"Probing nanoscale defects and wrinkles in MoS2 by tip-enhanced Raman spectroscopic imaging"

Applied Physics Letters, 114, 073105 (2019).

*highlighted as a top article in the Low-Dimensional Materials and Nanotechnologies section of the Journal.

8. Y. Ohashi, B. Ranjan, Y. Saito, T. Umakoshi, and P. Verma*,

"Tapered arrangement of metallic nanorod chains for magnified plasmonic nanoimaging",

Scientific Reports, 9, 2656 (2019).

2018

7. Y. Ohashi, B. Ranjan, Y. Saito, T. Umakoshi, and P. Verma*,

"Plasmonic transfer of near-field light from subwavelength objects through a gold-nanorod chain",

Applied Physics Express, 11, 102001 (2018).

6. T. Umakoshi, Y. Saito, and P. Verma,

"Metallic tips for efficient plasmon nanofocusing and advanced optical nano-imaging",

Proceedings of SPIE, 10726, 1072607 (2018).

5. T. Umakoshi, H. Udaka, T. Uchihashi, T. Ando, M. Suzuki, and T. Fukuda*,

"Quantum-dot antibody conjugation visualized at the single-molecule scale with high-speed atomic force microscopy",

Colloids and Surfaces B: Biointerfaces, 167, 267-274 (2018).

2017

4. R. Kato, Y. Saito, T. Umakoshi, and P. Verma,

"Near-field visible light absorption imaging by Raman-nano-light source",

Proceedings of SPIE, 10350 (2017).

2016

3. T. Umakoshi, Y. Saito, and P. Verma*,

“Highly efficient plasmonic tip design for plasmon nanofocusing in near-field optical microscopy”,

Nanoscale, 8, 5634-5640, (2016).

2013

2. T. Umakoshi, T. Yano, Y. Saito, and P. Verma,

“A new technique for fabrication of better metallic nanotips for nanoimaging through tip-enhanced Raman spectroscopy”,

Proceedings of SPIE, 8815, 88150O (2013).

2012

1. T. Umakoshi, T. Yano, Y. Saito, and P. Verma*,

“Fabrication of near-field plasmonic tip by photoreduction for strong enhancement in tip-enhanced Raman spectroscopy”,

Applied Physics Express, 5, 052001 (2012).

Books

2024

3. 馬越貴之,

“量子技術を用いたラベルフリー超解像顕微鏡の開発” (第２章量子デバイス),

量子生命科学ハンドブック、エヌ・ティー・エス, (2024).

2022

2. T Umakoshi, and P. Verma

“Tip-enhanced Raman spectroscopy for optical nanoimaging” (Book chapter),

Molecular and Laser Spectroscopy, Elsevier, 3, 55-100 (2022).

2021

1. T. Umakoshi, and P. Verma

“Tip-enhanced Raman spectroscopy” (Book chapter),

“Modern techniques of spectroscopy”, Springer Nature, 13, 209-234 (2021).

Misc

2025

12. 馬越　貴之,

“近接場光学顕微鏡の新技術”,

応用物理, 5月号, 94, 254-258 (2025).

*カバーアートに選出されました。

2024

12. 馬越　貴之,

“光で変形するアゾポリマー薄膜の変形過程をナノレベルで動画観察”,

光アライアンス, 8月号, OA2405-05, 35-39 (2024).

11. 馬越　貴之,

“プラズモン超集束:広帯域ナノ光源の発生と分光応用”,

分光研究, 73(2), 41-48 (2024).

2023

10. 加藤遼、馬越貴之、バルマプラブハット,

“チップ増強ラマン分光法による二次元ナノ材料の表面構造解析”,

フォトニクスニュース, 9(2), 103 (2023).

9. 加藤遼、森山季、馬越貴之、矢野隆章、バルマプラブハット,

“広視野プラズモニック超解像ラマンイメージング”,

光学, 52(6), 258 (2023).

2022

8. 馬越貴之,

“生体計測応用を指向した近接場光学顕微鏡の新技術”,

生物物理, 62(2), 128-130 (2022).

2021

7. 馬越貴之,

“先端増強ラマン散乱顕微鏡の空間分解能”,

分光研究, 70(1), 23-24 (2021).

2020

6. 馬越貴之, 齊藤結花, Prabhat Verma

“広帯域プラズモン超集束技術と計測応用”,

光学, 49(12), 487-493 (2020).

5. 馬越貴之,

“3DCGのすすめ”,

光学, 49(10), 429-431 (2020).

2019

4. 馬越貴之,

“光若手チャプターと若手研究者”,

フォトニクスニュース, 4(5), 197 (2019).

2018

3. 馬越貴之,

“Optical Communication -光で繋がるのか物理的に繋がるのか-”,

生産と技術, 70, 3 (49-51), (2018).

2016

2. 齊藤結花, 馬越貴之

“近接場光学顕微鏡を用いたナノイメージング”

表面科学, 37, 12 (2016).

2014

1. T. Umakoshi,

“Learning by Teaching”,

Optics & Photonics News, Optical Society of America, January 13th 2014.

Patent

2019

1. 馬越貴之, 谷口雅紀, バルマプラブハット

"試料温度調整装置"

特願2019-040790

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