Dr. Takayuki Umakoshi Profile

Dr. Takayuki Umakoshi

Associate Professor at Osaka Univ

SPIE Involvement:

Conference Program Committee | Author | Student Chapter Advisor | Leadership Workshop Facilitator

Proceedings Article | 3 October 2024 Presentation

Plasmon nanofocusing for nano-sensing and nano-optical switching

Prabhat Verma, Takayuki Umakoshi, Hiroshi Arata

Proceedings Volume PC13111, PC131110W (2024) https://doi.org/10.1117/12.3028046

KEYWORDS: Plasmons, Optical switching, Light sources and illumination, Optoelectronics, Optical sensing, Optical antennas, Electrical properties

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Proceedings Article | 5 October 2023 Presentation

Ultrastable tip-enhanced Raman spectroscopic imaging of 2D material systems

Ryo Kato, Takayuki Umakoshi, Prabhat Verma, Taka-aki Yano, Takuo Tanaka

Proceedings Volume PC12654, PC1265402 (2023) https://doi.org/10.1117/12.2675956

KEYWORDS: Imaging systems, Raman spectroscopy, Imaging spectroscopy, Biological imaging, 2D materials, Spectroscopy, Materials properties, Biological samples, Spatial resolution, Semiconductors

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Proceedings Article | 5 October 2023 Presentation

Broadband plasmon nanofocusing for nanoscale optical switching of photochromic materials

Takayuki Umakoshi, Haruki Kidoguchi, Hiroshi Arata, Prabhat Verma

Proceedings Volume PC12654, PC1265404 (2023) https://doi.org/10.1117/12.2675682

KEYWORDS: Plasmons, Photochromic materials, Optical switching, Ultraviolet radiation, Visible radiation, Optical properties, Materials properties, Super resolution, Semiconductors, Nanophotonics

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Proceedings Article | 4 October 2022 Presentation

Broadband nanolight source generated through plasmon nanofocusing and its applications (Conference Presentation)

Takayuki Umakoshi, Koki Taguchi, Hiroshi Arata, Prabhat Verma

Proceedings Volume PC12203, PC1220307 (2022) https://doi.org/10.1117/12.2633200

KEYWORDS: Plasmons, Optical antennas, Photochemistry, Nanophotonics, Light sources, Wave propagation, Spectroscopy, Spatial resolution, Silver, Scattering

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Proceedings Article | 3 October 2022 Presentation

Optical field mapping of nanostructures by means of vibrational spectroscopic techniques

Ryo Kato, Taka-aki Yano, Takayuki Umakoshi, Prabhat Verma, Takuo Tanaka

Proceedings Volume PC12197, PC121970E (2022) https://doi.org/10.1117/12.2631957

KEYWORDS: Nanostructures, Spectroscopy, Spectroscopes, Raman spectroscopy, Optical properties, Infrared radiation, Dielectrics, Visualization, Visible radiation, Surface plasmons

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Proceedings Article | 1 August 2021 Presentation

Broadband plasmon nanofocusing: from fundamental studies to advanced applications

Takayuki Umakoshi, Koki Taguchi, Prabhat Verma

Proceedings Volume 11803, 118030E (2021) https://doi.org/10.1117/12.2596833

KEYWORDS: Plasmons, Scattering, Laser scattering, Visualization, Plasmonics, Optical microscopy, Near field, Nanostructures, Nanophotonics, Nanoimaging

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Proceedings Article | 20 August 2020 Poster

Molecular orientation imaging of single-layer organic semiconducting molecules by polarization Raman microscopy

Toki Moriyama, Takayuki Umakoshi, Koki Taguchi, Yoshiaki Hattori, Masatoshi Kitamura, Prabhat Verma

Proceedings Volume 11468, 114681F (2020) https://doi.org/10.1117/12.2569309

KEYWORDS: Raman spectroscopy, Polarization, Molecules, Organic semiconductors, Semiconductors, Microscopy, Chemical analysis, Spatial resolution

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Proceedings Article | 25 October 2018 Paper

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

Takayuki Umakoshi, Yuika Saito, Prabhat Verma

Proceedings Volume 10726, 1072607 (2018) https://doi.org/10.1117/12.2319705

KEYWORDS: Plasmons, Silver, Silicon, Coating, Near field optics, Near field scanning optical microscopy, Polarization, Nanoimaging, Near field, Laser scattering

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Proceedings Article | 17 September 2018 Presentation

Low-frequency Raman imaging of MoS2 (Conference Presentation)

Rhea Thankam Sam, Takayuki Umakoshi, Prabhat Verma

Proceedings Volume 10726, 107260Q (2018) https://doi.org/10.1117/12.2322706

KEYWORDS: Raman spectroscopy, Graphene, Optoelectronic devices

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Proceedings Article | 25 August 2017 Paper

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

Ryo Kato, Yuika Saito, Takayuki Umakoshi, Prabhat Verma

Proceedings Volume 10350, 103500S (2017) https://doi.org/10.1117/12.2275363

KEYWORDS: Absorption, Raman spectroscopy, Near field scanning optical microscopy, Near field, Absorbance, Optical properties

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Proceedings Article | 20 September 2013 Paper

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

Proceedings Volume 8815, 88150O (2013) https://doi.org/10.1117/12.2024760

KEYWORDS: Silver, Nanoparticles, Raman spectroscopy, Plasmons, Raman scattering, Nanolithography, Spatial resolution, Metals, Scanning electron microscopy, Particles

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Showing 5 of 11 publications

Conference Committee Involvement (6)

Enhanced Spectroscopies and Nanoimaging 2025

3 August 2025 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2024

18 August 2024 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2023

20 August 2023 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2022

21 August 2022 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2021

2 August 2021 | San Diego, California, United States

Showing 5 of 6 Conference Committees

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