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International Conferences / Symposiums (Presenters denoted with *)

  1. Ryo Kato*, Taka-aki Yano, and Takuo Tanaka, "Visualizing Optical Fields of Dielectric-Based Metamaterials via Mid-Infrared Photothermal Imaging," Global Nanophotonics 2022 (Core-to-Core Symposium GNP2022) (Osaka International Convention Center, Grand Cube , Osaka, Japan, 2022), Oral

  2. Taka-aki Yano*, Ryo Kato, and Takuo Tanaka, "Ultrasensitive plasmonic sensing of single biomolecular complexes," Global Nanophotonics 2022 (Core-to-Core Symposium GNP2022) (Osaka International Convention Center, Grand Cube, Osaka, Japan, 2022) , Invited

  3. Ryo Kato*, Taka-aki Yano, and Takuo Tanaka, "Multimodal vibrational imaging based on mid-infrared photothermal microscopy," SPIE Photonics WEST 2022 (San Francisco, California, USA, 2022), Oral

  4. Taichi Hara, Ryo Kato, Taka-aki Yano, and Takuo Tanaka, "Metasurface-based perfect reflectors for highly-sensitive infrared spectroscopy," SPIE Photonics WEST 2022 (San Francisco, California, USA, 2022), Oral

  5. Akari Okimura, Ryo Kato, Taka-aki Yano, and Takuo Tanaka, "Tip-enhanced Raman analysis of inorganic-binding peptide molecules," SPIE Photonics WEST 2022 (San Francisco, California, USA, 2022), Poster

  6. Mitsuhiro Uesugi*, Yoshie Komatsu, Fusatoshi Okamoto, Ryo Kato, Takuo Tanaka, Taka-aki Yano, and Fumihisa Kitawaki, “Highly-stable Polymer Coating on Metallic Nanoparticles for Plasmonic Fluorescence Enhancement,” The 9th International Symposium on Surface Science (ISSS- 9) at Online (January. 2021), Poster

  7. Ryo Kato*, Takayuki Umakoshi, Rhea Thankam Sam and Prabhat Verma “Characterizing nanoscale defects and wrinkles in MoS2 by tip-enhanced Raman spectroscopy” SPIE Photonics West 2020, OPTO, 11288-79, (San Francisco, February. 2020), Poster

  8. Ryo Kato*, Shun Igarashi, Takayuki Umakoshi and Prabhat Verma “Tip-enhanced Raman spectroscopic investigation of interwall interactions in multi-walled carbon nanotube” Global Nanophotonics 2019, P-06 (Taipei, December. 2019), Poster

  9. Ryo Kato*, Shun Igarashi, Takayuki Umakoshi and Prabhat Verma “Tip-Enhanced Raman Spectroscopic Observation of interwall interactions in multi-walled carbon nanotube” The 7th International Conference On Tip-Enhanced Raman Spectroscopy, Session5-3, (Xiamen, November. 2019 ), Oral

  10. Ryo Kato*, Takayuki Umakoshi, Rhea Thankam Sam and Prabhat Verma “Characterization of nanoscale defects and wrinkles in MoS2 by tip-enhanced Raman spectroscopy”  Student Conference on Light, P8, (Osaka, November. 2019 ) Poster

  11. Ryo Kato*, Shun Igarashi, Takayuki Umakoshi and Prabhat Verma “Investigating interwall interactions in multi-walled carbon nanotube by tip-enhanced Raman spectroscopy” SPIE Optics Photonics 2019, 11082-107, (San Diego, August. 2018), Poster

  12. Ryo Kato, Akihiro Kuno, Takayuki Umakoshi and Prabhat Verma*  “Tunable plasmon resonance for tip-enhanced Raman spectroscopy”  The 9th International Multidisciplinary Conference on Optofluidics, Jan. 2019 Sym1 (Hong Kong, China, June. 2019), invited

  13. Ryo Kato*, Shun Igarashi, Takayuki Umakoshi and Prabhat Verma “Nanoscale investigation of interwall interactions in multi-walled carbon nanotube by near-field Raman spectroscopy” International Symposium for Materials Scientists III, P56, (Osaka, November. 2018), Poster

  14. Ryo Kato*, Shun Igarashi, Takayuki Umakoshi and Prabhat Verma “Nanoscale Raman Study of Interwall Interactions in Multi-Walled Carbon Nanotube” JSCM 2018 ,P-07, (Osaka, September. 2018), Poster

  15. Ryo Kato, Takayuki Umakoshi and Prabhat Verma*  “New Approach for Background-Free Enhanced Nano Raman Spectroscopy”  The 26th International Conference on Raman Spectroscopy 2018, ThAM-01 -I-2, (Jeju, Korea, August. 2018), invited

  16. Ryo Kato, Takayuki Umakoshi and Prabhat Verma*  “New approaches to Tip-enhanced Raman Spectroscopy”  The 39th Progress in Electromagnetics Research Symposium (PIERS), 1704451 Technological University, Singapore, November. 2017), Invited

  17. Ryo Kato, Takayuki Umakoshi and Prabhat Verma*  “Nano-Light-Source for Background-Free Tip-Enhanced Raman Spectroscopy” Taiwan-Germany Workshop on Ultrafast Laser Spectroscopy and High-Resolution Optical Imaging of Plasmonics and Molecular Systems (Tuebingen, Germany, November. 2017)

  18. Ryo Kato*, Yuika Saito, Takayuki Umakoshi and Prabhat Verma  “Nano-scale imaging for absorption coefficient by two color Raman nano-light source”  International OSA Network of Students Conference, (Okinawa, Japan, October. 2017), Oral

  19. Ryo Kato*, Yuika Saito, Takayuki Umakoshi and Prabhat Verma  “Near-field absorption imaging by two color Raman nano-light source”   Frontier in Optics + Laser Science Conference, JW3A66, (Washington DC, USA, September. 2017), Rapid oral and Poster

  20. Ryo Kato*, Yuika Saito, Takayuki Umakoshi and Prabhat Verma “Near-field visible light absorption imaging with two color lasers”  ICO-24th, 10350-27, (Tokyo, Japan, August. 2017) , Oral

  21. Ryo Kato*, Yuika Saito, Takayuki Umakoshi and Prabhat Verma “Near-field visible light absorption imaging by Raman-nano-light source” SPIE Optics +Photonics 2017, 10350- 27, (San Diego, USA, August.2017), Oral

  22. Ryo Kato, Misaki Tanaka, Takayuki Umakoshi and Prabhat Verma* “New Approaches to Enhanced Raman Spectroscopies” The 7th International Conference on Nanoscience and Technology (Beijing, China, August. 2017), invited

  23. Ryo Kato, Misaki Tanaka, Takayuki Umakoshi and Prabhat Verma* “Unconventional Tip-Enhanced Raman Spectroscopy” 9th International Conference on Materials for Advanced Technologies (Suntec, Singapore, June. 2017), Invited

  24. Ryo Kato*, Yuika Saito and Prabhat Verma “Near-field Absorption Imaging by Novel Raman Nano-light Source” Global Nanophotonics 2016, p-15, (Osaka, Japan, December. 2016), Poster

  25. Ryo Kato*, Yuika Saito, Prabhat Verma “Nanoscale Absorption Imaging by Raman Excited Two Color Lights” Global Student Conference 2016, p-15, (Osaka, Japan, November. 2016), Poster

  26. Ryo Kato*, Yuika Saito, Hikaru Yoshino and Prabhat Verma “Near-field absorption imaging with nano-scale resolution” Asian CORE Student Meeting 2015, p-21, (Osaka, Japan, December. 2015), Poster

  27. Ryo Kato*, Yuika Saito, Hikaru Yoshino and Prabhat Verma “Nano-scale imaging based on near-field absorption” 5th International Conference on Tip Enhanced Raman Spectroscopy, p-26, (Osaka, Japan, October. 2015), Poster

  28. Rhea Thankam Sam*, Ryo Kato, Takayuki Umakoshi and Prabhat Verma, “Probing nanoscale inhomogeneities in few-layered MoS2 by tip-enhanced Raman spectroscopy” Global Nanophotonics 2019, P-04 (Taipei, December. 2019), Poster

  29. Rhea Thankam Sam*, Ryo Kato, Takayuki Umakoshi and Prabhat Verma “Probing nanoscale defects in MoS2by tip-enhanced Raman spectroscopy” The 7th International Conference on Tip-enhanced Raman Spectroscopy, P17, (Xiamen, November. 2019), Poster

  30. Akihiro Kuno, Ryo Kato, Takayuki Umakoshi and Prabhat Verma* “Tunable and background-free nanospectroscopy and nanoimaging through tip-enhanced Raman spectroscopy” SPIE Optics + Photonics 2018, 10722-6 (San Diego, USA, August. 2018), Invited

Domestic Conferences / Symposium (Presenter denoted with *)

  1. Akari Okimura*, Ryo Kato, Takaaki Yano, Takuo Tanaka, "Gap-mode tip-enhanced Raman spectroscopy of peptide molecules recognizing inorganic materials," The 69th JSAP Spring Meeting (Aoyama Gakuin University, Kanagawa 2022)

  2. Taichi Hara*, Ryo Kato, Takaaki Yano, Takuo Tanaka, "Development of mid-infrared dielectric metamaterials and their application to high-sensitivity infrared spectroscopy," The 69th JSAP Spring Meeting (Aoyama Gakuin University, Kanagawa) 2022)

  3. Yoshie Komatsu*, Mitsuhiro Uesugi, Fusatoshi Okamoto, Ryo Kato, Takuo Tanaka, Takaaki Yano, Fumihisa Kitawaki, “Stable polymer coating of metal nanoparticles and their application to plasmon fluorescence enhancement sensors,” The Japan Society for Analytical Chemistry 70th year Meeting at Online (2021) Poster

  4. Akari Okimura*, Ryo Kato, Taka-aki Yano, Takuo Tanaka.  "Tip-enhanced Raman spectroscopy of single biomolecule". symposia on Optics, 27aBJ3, online, October. 2021 Oral presentation

  5. Taichi Hara*, Ryo Kato, Taka-aki Yano, Takuo Tanaka.  "Perfect dielectric-metamaterial reflectors for highly-sensitive infrared spectroscopy". 2021, Joint symposia on Optics, 27aBJ4, online, October. 2021 Oral presentation

  6. Akari Okimura*, Ryo Kato, Takaaki Yano, Takuo Tanaka  "Single-molecule spectroscopy of peptides recognizing inorganic materials using gap-mode probe-enhanced Raman spectroscopy" Annual meeting of the Spectroscopic Society of Japan, BI-02, October 2021 Oral presentation

  7. Taichi Hara*, Ryo Kato, Takaaki Yano, Takuo Tanaka  Development of mid-infrared dielectric metamaterials and their application to high-sensitivity infrared spectroscopy" Annual meeting of the Spectroscopic Society of Japan, BI-14, October 2021 Oral presentation

  8. Ryo Kato*, Koki Taguchi, Ravi Yadav, Takayuki Umakoshi and Prabhat Verma “Highly Reproducible Gap-Mode Tip-Enhanced Raman Spectroscopy with One-Side Metal-Coated Cantilever Tips”  81st application Physics Society Autumn Meeting JSAP-OSA joint symposia, 4.1 Plasmonic and Nanophotonics, 9p-Z16-3, (Online, September 2020) Oral presentation

  9. Ryo Kato*, Shun Igarashi, Takayuki Umakoshi and Prabhat Verma “Near-field Raman Investigation of Interwall Interactions in Multi-Walled Carbon Nanotube” The 79th JSAP Autumn Meeting JSAP-OSA Joint Symposia, 18a-211B-4, (Nagoya, September 2018) Oral presentation

  10. Ryo Kato*, Shun Igarashi, Takayuki Umakoshi and Prabhat Verma “Near-field Raman Study of Interwall Interactions in Multi-Walled Carbon Nanotube” Annual Meeting of the Spectroscopic Society of Japan, PIII-04, Yokohama, May 2018 ) posters

  11. Ryo Kato*, Yuka Saito, Takayuki Umakoshi, Prabhat Verma, “Near-field visible light absorption imaging using two-color Raman nanolight sources”, 2017 Annual Meeting of the Spectroscopic Society of Japan, (Tokyo, May 2017) Oral presentation

  12. Ryo Kato*, Yuika Saito and Prabhat Verma “Near-field absorption imaging by two color nano-light source” Presentation Commemorative Special Invited Lecture, The 66th JSAP Spring Meeting 14a-C302-7 (Yokohama, March 2017) Oral Presentation 

  13. Ryo Kato*, Yuika Saito and Prabhat Verma “Near-field absorption imaging by two color nano-light source” The 77th JSAP Autumn Meeting JSAP-OSA Joint Symposia, 14a-C302-7 (Niigata, September 2016) Oral presentation

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