研究業績

原著論文

  1. K. Imura, T. Matsuura, “Directional Light Scattering of a Single Si Nanoparticle Revealed by Three-Dimensional Near-Field Optical Microscopy”, J. Phys. Chem. Lett., (2025) in press.
  2. K. Imura, N. Miwa, “Optical field enhancement in gold Nanoplate assemblies”, Chem. Phys. Lett. 867, 141966 (6 pages) (2025).
  3. S. Hasegawa, K. Imura, “Three Dimensional Visualization of Chiral Nano-Optical Field aroumd Gold Nanoplates via Scanning Near-Field Optical Microscopy”, Nano Lett. 25, 376-382 (2025). 複数のメディアで紹介されました。プレスリリースはこちら
  4. S. Hasegawa, M. Kanoda, M. Tamura, K. Hayashi, S. Tokonami, T. Iida, K. Imura, “Plasmon dephasing time and optical field enhancement in a plasmonic nanobowl substrate studied by scanning near-field optical microscopy”, J. Chem. Phys. 161, 054713 (2024).
  5. M. Fukata, H. Shirayama, K. Imura, “Development of Absorption and Scattering Microspectroscopy Using Phase-Stepping Method”, J. Phys. Chem. C 128, 3370-3376 (2024).
  6. K. Tawa, T. Shinohara, Y. Nawa, S. Hasegawa, K. Imura, “Nanoantenna Effect at a Center of Bull"s Eye Pattern by Controlling the Refractive Indices and Layer Thicknesses of Dielectric Media on a Silver Surface”, J. Phys. Chem. C 128, 3011-3018 (2024).
  7. S. Hasegawa, H. Ichikawa, K. Imura, “Selective Excitation of Dark Plasmon Modes Using Cylindrical Vector Beams Studied by Microscipic Imaging of Nonlinear Photoluminescence”, J. Phys. Chem. C  128, 2536-2542 (2024).
  8. S. Ogata, K. Imura, “Optical properties of multilayer MoS2 modified with thermal and shape transformation by laser irradiation”, Chem. Phys. Lett. , 831, 140859 (5 pages) (2023).
  9. K. Imaeda, K. Imura, “Nanoscopic Imaging of Photonic Modes Excited in Square-Shaped Perylene Microcrystal”, J. Phys. Chem. C 127, 4665-4671 (2023).
  10. A. Jimbo, K. Imura, “Nonlinear Photoluminescence from Gold Nanoparticle Thin Films Studied by Scanning Near-Field Optical Microscopy”, J. Phys. Chem. C 126, 14960-14966 (2022).
  11. S. Hasegawa, K. Imura, “Photoluminescence Properties of Gold Nanorod and J-Aggregate Hybrid Systems Studied by Scanning Near-Field Optical Microscopy”, J. Phys. Chem. C 126, 5944 (2022).
  12. T. Nagasue, T. Shinohara, S. Hasegawa, K. Imura, K. Tawa, “Nanoantenna effect dependent on the center structure of Bull’s eye-type plasmonic chip ”, Optics Express 30, 7526 (2022).
  13. K. Imaeda, S. Hasegawa, K. Imura, “Observation of the Plasmon Mode Transition from Triangular to Hexagonal Nanoplates ”, J. Chem. Phys. 156, 044702 (2022).
  14. A. Yokozawa, S. Hasegawa, K. Imaeda, K. Imura, “Visualization of Plasmon-Exciton Interactions by Scanning Near-Field Optical Microscopy ”, J. Phys. Chem. C 125, 24515-24520 (2021).
  15. S. Hasegawa, K. Imaeda, K. Imura, “Plasmon-Enhanced Fluorescence near Single Gold Nanoplates Studied by Scanning Near-Field Two-Photon Excitation Microscopy ”, J. Phys. Chem. C 125, 21070-21076 (2021).
  16. A. Jimbo, Y. Nishikado, K. Imura, “Optical field and chemical environment near the surface modified gold nanoparticle assembly revealed by two-photon induced photoluminescence and surface enhanced Raman scattering ”, Bull. Chem. Soc. Jpn. 94, 2272-2278 (2021). “BCSJ Award Article”.
  17. Y. Kamura, K. Imura, “Photoluminescence from Carbon Dot-Gold Nanoparticle Composites Enhanced by Photonic and Plasmonic Double Resonant Effect ”, ACS Omega. 5, 29068–29072 (2020).
  18. H. Mizobata, S. Hasegawa, M. Tamura, T. Iida, K. Imura, “Near-field transmission and reflection spectroscopy for revealing absorption and scattering characteristics of single silver nanoplates ”, J. Chem. Phys. 153, 144703 (2020).
  19. Y. Kamura, K. Imura, “Enhanced and Polarized Photoluminescence from Carbon Dot - Metal Nanoparticle Composites ”, J. Phys. Chem. C 124, 7370–7377 (2020).“Journal Cover”
  20. H. Suzuki, K. Imaeda, H. Mizobata, K. Imura, “Spatial characteristics of optical fields near a gold nanorod revealed by three-dimensional scanning near-field optical microscopy ”, J. Chem. Phys. 152, 014708 (6 pages) (2020).
  21. K. Imaeda, K. Tawa, K. Imura, “Nanoscopic Visualization of Fluorescence Excitation Probability on Two-Dimensional Periodical Gold Nanohole Array”, Chem. Lett. 48, 1119-1121 (2019).
  22. K. Imaeda, W. Minoshima, K. Tawa, K. Imura, “Direct Visualization of Near-Field Distributions on a Two-Dimensional Plasmonic Chip by Scanning Near-Field Optical Microscopy”, J. Phys. Chem. C 123, 10529-10535 (2019). “Journal Cover”.
  23. S. Noda, S. Hasegawa, H. Hamada, S. Kobatake, K. Imura, “Plasmon enhanced optical responses of diarylethene molecules adsorbed on gold nanorods”, Chem. Lett. 48, 537-540 (2019).
  24. Y. Kamura, K. Imura, “Space-Selective Fabrication of Light Emitting Carbon Dots in Polymer Films Using Electron-Beam-Induced Chemical Reactions”, ACS Omega 4, 3380 (2019).
  25. T. Matsuura, K. Imaeda, S. Hasegawa, H. Suzuki, K. Imura, “Characterization of Overlapped Plasmon Modes in Gold Hexagonal Plate Revealed by Three-Dimensional Near-Field Optical Microscopy”, J. Phys. Chem. Lett. 10, 819 (2019). “Journal Cover”.
  26. K. Imaeda, S. Hasegawa, K. Imura, “Static and Dynamic Near-Field Measurements of Highly Order Plasmon Modes Induced in a Gold Triangular Nanoplate”, J. Phys. Chem. Lett. 9, 4075-4081 (2018).
  27. Y. Kamura, K. Imura, “Fabrication method of two-photon luminescent organic nanoarchtectures”, Appl. Phys. Lett. C 112, 243104 (2018).
  28. R. Takahata, S. Yamazoe, K. Koyasu, K. Imura, T. Tsukuda, “Gold Ultrathin Nanorods with Controlled Aspect Ratios and Surface Modifications: Formation Mechanism and Localized Surface Plasmon Resonance”, J. Am. Chem. Soc. 140, 6640-6647 (2018). “Journal Cover”.
  29. K. Imaeda, S. Hasegawa, K. Imura, “Imaging of Plasmonic Eigen Modes in Gold Triangular Mesoplates by Near-Field Optical Microscopy”, J. Phys. Chem. C 122, 7399-7409 (2018).
  30. H. Mizobata, S. Hasegawa, K. Imura, “Development of Aperture-Type Near-Field Reflection Spectroscopy and Its Application to Single Silver Nanoplates”, J. Phys. Chem. C 121, 11733-11739 (2017).
  31. H. Mizobata, K. Ueno, H. Misawa, H. Okamoto, K. Imura, “Near-field spectroscopic properties of complementary gold nanostructures: applicability of Babinet’s principle in the optical region”, Opt. Express 25 5279-5289 (2017).
  32. M. K. Hossain, M. Kitajima, K. Imura, H. Okamoto, “Interstitial Dependent Enhanced Photoluminescence: A Near-field Microscopy on Single Spheroid to Dimer, Tetramer and Few Particles Gold Nanoassembly”, J. Phys. Chem. C. 121 2344-2354 (2017).
  33. K. Imaeda, K. Imura, “Raman activity and dynamics of plasmons on a rough gold film studied by ultrafast scanning near-field optical microscopy”, “Frontiers of Plasmon Enhanced Spectroscopy“ in ACS Books (2016).
  34. K. Imura, H. Mizobata, Y. Makita, “Photobleaching-assisted near-field absorption spectroscopy: its application to single tubular J-aggregates”, Bull. Chem. Soc. Jpn. 89, 1518-1522 (2016). “Selected paper”.
  35. T. Uchida, Y. Yoshikawa, M. Tamura, T. Iida, K. Imura, “Multiple Resonances Induced by Plasmonic Coupling between Gold Nanoparticle Trimers and Hexagonal Assembly of Gold-Coated Polystyrene Microspheres”, J. Phys. Chem. Lett. 7, 3652–3658 (2016). 日経産業新聞（10/19）で紹介されました。日経新聞電子版で紹介されました, プレスリリースはこちら
  36. K. Imaeda, K. Imura, “Dye-assisted visualization of plasmon modes excited in single gold nanoplates”, Chem. Phys. Lett. 646, 179-184 (2016). “Editor's Choice”.
  37. Y. Nishiyama, K. Imura, H. Okamoto, “Observation of plasmon wave packet motions via femtosecond time-resolved near-field imaging techniques”, Nano Lett. 15, 7657–7665 (2015).
  38. T. Uchida, Y. Ichikawa, K. Imura, “Optical Properties and Surface-Enhanced Raman Scattering Activity of Hexagonally Arranged Gold Nanoparticle Trimer”, Chem. Phys. Lett. 638, 253-257 (2015). “Editor's Choice”.
  39. Y. Nishiyama, K. Imaeda, K. Imura, H. Okamoto, “Plasmon dephasing in single gold nanorods observed by ultrafast time-resolved near-field optical microscopy”, J. Phys. Chem. C 119, 16245-16222 (2015).
  40. H. Okamoto, T. Narushima, Y. Nishiyama and K. Imura, “Local optical responses of plasmon resonances visualised by near-field optical imaging”, Phys. Chem. Chem. Phys. 17, 6192-6206 (2015).
  41. M. Hossain, M. Kitajima, K. Imura, H. Okamoto, “A Topography-Metrology Correlation in Nanoscale Probed by Near-Field Scanning Optical Microscopy”, Plasmonics 10, 447-454 (2015).
  42. M. Hossain, M. Kitajima, K. Imura, H. Okamoto, “Near-field scanning optical microscopy: Single channel imaging of selected gold nanoparticles through two photon induced photoluminescence”, Advanced Materials Research 938, 118-122 (2014).
  43. K. Imura, K. Ueno, H. Misawa, H. Okamoto, D. McArthur, B. Hourahine,F. Papoff, “Plasmon modes in single gold nanodiscs ”Opt. Express 22, 12189-12199 (2014).
  44. K. Imaeda, K. Imura, “Optical control of plasmonic fields by phase-modulated pulse excitations”, Opt. Express 21, 27481 (2013).
  45. H. Okamoto, K. Imura, “Visualizing the Optical Field Structures in Metal Nanostructures”, J. Phys. Chem. Lett 4, 2230-2241 (2013).
  46. K. Imura, K. Ueno, H. Misawa, H. Okamoto, “Optical Field Imaging of Elongated Rectangular Nanovoids in Gold Thin Film”, J. Phys. Chem. C 117, 2449-2454 (2013).
  47. T. Shimada, K. Imura, H. Okamoto, M. Kitajima, “Spatial distribution of enhanced optical fields in one-dimensional linear arrays of gold nanoparticles studied by scanning near-field optical microscopy”, Phys. Chem. Phys. Chem. 15, 4265 (2013).
  48. S. Kim, K. Imura, M. Lee, T, Narushima, H. Okamoto, D. H. Jeong, “Strong Optical Coupling between Mutually Orthogonal Plasmon Oscillations in a Silver Nanosphere-Nanowire Joined System”, Phys. Chem. Phys. Chem. 15, 4154 (2013).
  49. H. J. Wu, Y. Nishiyama, T. Narushima, K. Imura, H. Okamoto, “Sub-20-fs time-resolved measurements in an apertured near-field optical microscope combined with a pulse-shaping technique”, Appl. Phys. Express 5, 062002 (2012)
  50. Y. Harada, K. Imura, H. Okamoto, Y. Nishijima, K. Ueno, H. Misawa “SPlasmon-Induced Local Photocurrent Changes in GaAs Photovoltaic Cells Modified with Gold nanospheres: A Near-Field Imaging Study”,　J. Appl. Phys. 5, 104306 (2011) (7 pages).
  51. A. Sakamoto, K. Mori, K. Imura, H. Okamoto, “Nanoscale Two-Photon Induced Polymerization of Diacetylene LB Film by Near-Field Photoirradiation”, J. Phys. Chem. C 115, 6190-6194 (2011).
  52. H. Okamoto, K. Imura, T. Shimada, M. Kitajima, “Spatial distribution of enhanced optical fields in monolayered assemblies of metal nanoparticles: Effects of interparticle coupling”, J. Phorochem. Photobio. A 221, 154-159 (2011).
  53. K. Imura, K. Ueno, H. Misawa, H. Okamoto, “Anomalous Light Transmission from Plasmonic Capped Nano-Apertures”, Nano Lett. 11, 960-965 (2011). 複数のメディアで紹介されました。プレスリリースはこちら
  54. S.I. Kim, K. Imura, S. Kim, H. Okamoto, “Confined Optical Fields in Nanovoid Chain Structures Directly Visualized by Near-Field Optical Imaging”, J. Phys. Chem. C 115, 1548-1555 (2011).
  55. K. Sawada, H. Nakamura, T. Maruoka, Y. Tamura, K. Imura, T. Saiki, H. Okamoto, “FDTD Simulated Observation of a Gold Nanorod by Scanning Near-Field Optical Microscopy”, Plasma Fusion Research 5, S2110 (2010) (4 pages).
  56. K. Imura, H. Okamoto, “Properties of Photoluminescence from Single Gold Nanorods Induced by Near-Field Two-Photon Excitation”, J. Phys. Chem. C 113, 11756 (2009).
  57. K. Imura, Y. C. Kim, S. Y. Kim, D. H. Jeong, H. Okamoto, “Two-photon Imaging of Localized Optical Fields in the Vicinity of Silver Nanowires Using a Scanning Near-field Optical Microscope”, Phys. Chem. Chem. Phys. 11, 5876 (2009).
  58. H. Okamoto, K. Imura, Near-field optical imaging of enhanced electric fields and plasmon waves in metal nanostructures, Prog. Surf. Sci. 84, 199 (2009).
  59. Y. Jiang, N. N. Horimoto, K. Imura, H. Okamoto, K. Matsui, R. Shigemoto, Bio-Imaging with Two-Photon Induced Luminescence from Gold Triangular Nanoplates and Nanoparticle Aggregates, Adv. Mater. 21, 2309 (2009).
  60. N. Horimoto, K. Imura, H. Okamoto, “Dye-fluorescence enhancement and quenching by gold nanoparticles: direct near-field microscopic observation of shape dependence”, Chem. Phys. Lett. 467, 105-109 (2008).
  61. M. K. Hossain, T. Shimada, M. Kitajima, K. Imura, H. Okamoto, “Near-Field Raman Imaging and Electromagnetic Field Confinement in the Self-Assembled Monolayer Array of Gold Nanoparticles”, Langmuir 24, 9241-9244 (2008).
  62. H. Okamoto, K. Imura, “Near-Field Optical Imaging of Nanoscale Optical Fields and Plasmon Waves”, Jpn. J. Appl. Phys. 47, 6055-6062 (2008).
  63. K. Imura, H. Okamoto, “Development of Novel Near-Field Microspectroscopy and Imaging of Local Excitations and Wavefunctions of Nanomaterials”, Bull. Chem. Soc. Jpn. 81, 659-675 (2008).
  64. T. Shimada, K. Imura, M. K. Mohammad, H. Okamoto, M. Kitajima, “Near-Field Study on Correlation of Localized Electric Field and Nanostructures in Monolayer Assembly of Gold Nanoparticles”, J. Phys. Chem. C. (Letters) 112, 4033-4035 (2008).
  65. K. Imura, H. Okamoto, “Ultrafast photoinduced changes of eigenfunctions of localized plasmon modes in gold nanorods”, Phys. Rev. B. (Rapid communication) 77, 041401(R) (2008).
  66. M.-K. Hossain, T. Shimada, M. Kitajima, K. Imura, H. Okamoto, “Raman and near-field spectroscopic study on localized surface plasmon excitation from the 2D nanostructure of gold nanoparticles”, J. Microsc. 229, 327 (2008).
  67. H. Okamoto, K. Imura, “Imaging of Optical Field Distributions and Plasmon Wavefunctions in Metal Nanoparticles”, Proc. SPIE. 6642, 66420A (2007).
  68. K. Imura, H. Okamoto, “Ultrafast near-field microscopy of single gold nanoparticles”, Proc. SPIE. 6471, 647103 (2007).
  69. K. Imura, H. Okamoto, M.-K. Hossain, M. Kitajima, “Visualization of Localized Intense Optical Fields in Single Gold-Nanoparticle Assemblies and Ultrasensitive Raman Active Sites”, Nano. Lett. 6, 2173-2176 (2006).
  70. H. Okamoto, K. Imura, “Near-Field Imaging of Optical Field and Plasmon Wavefunctions in Metal Nanoparticles”, J. Mat. Chem. 16, 3920 (2006).
  71. K. Imura, H. Okamoto, “Reciprocity in Scanning Near-Field Optical Microscopy: Illumination and Collection Modes of Transmission Measurements”, Opt. Lett. 31, 1474-1476 (2006).
  72. K. Imura, T. Nagahara, H. Okamoto, “Photoluminescence from Gold Nanoplates Induced by Near-Field Two-Photon Absorption”, Appl. Phys. Lett. 88, 023104 (2006).
  73. K. Imura, H. Okamoto, M. K. Hossain, M. Kitajima, “Near-Field Imaging of Surface Enhanced Raman Active Sites in Aggregated Gold Nanoparticles”, Chem. Lett. 35, 78 (2006).
  74. K. Imura, T. Nagahara, H. Okamoto, “Ultrafast Near-Field Microscope Imaging of Electron and Phonon Relaxation in Single Gold Nanoparticle”, Ultrafast Phenomena XIV, Springer Verlag, 655 (2005).
  75. T. Nagahara, K. Imura, H. Okamoto, “Pump-Probe Near-Field Optical Microscopy of Molecular Aggregates Using Supercontinuum”, Ultrafast Phenomena XIV, Springer Verlag, 434 (2005).
  76. T. Nagahara, K. Imura, H. Okamoto, A. Oguro, H. Imahori, “Morphological and Spectroscopic Properties of Thin Films of Self-Assembling Amphiphilic Porphyrins on Hydrophilic Surface as Revealed by Scanning Near-Field Optical Microscopy”, J. Phys. Chem. B 109, 19839 (2005).
  77. J. K. Lim, K. Imura, T. Nagahara, S. K. Kim, H. Okamoto, “Imaging and Dispersion Relations of Surface Plasmon Modes in Silver Nanorods by Near-Field Spectroscopy”, Chem. Phys. Lett., 412, 41 (2005).
  78. K. Imura, T. Nagahara, H. Okamoto, “Near-Field Two-Photon-Induced Photoluminescence from Single Gold Nanorods and Imaging of Plasmon modes”, J. Phys. Chem. B 109, 13214 (2005).
  79. K. Imura, T. Nagahara, H. Okamoto, “Near-Field Optical Imaging of Plasmon Modes in Gold Nanorods”, J. Chem. Phys., 122, 154701 (2005).
  80. K. Imura, T. Nagahara, H. Okamoto, “Characteristic Near-Field Spectra of Single Gold Nanoparticles”, Chem. Phys. Lett., 400, 500 (2004).
  81. T. Nagahara, K. Imura, H. Okamoto, “Time-Resolved Scanning Near-Field Optical Microscopy with Supercontinuum Light Pulses Generated in Microstructure Fiber”, Rev. Sci. Instrum., 75, 4528 (2004).
  82. K. Imura, T. Nagahara, H. Okamoto, “Plasmon Mode Imaging of Single Gold Nanorods”, J. Am. Chem. Soc. (Communication), 126, 12730 (2004).
  83. T. Nagahara, K. Imura, H. Okamoto, “Near-Field Spectroscopy of Water-Soluble and Water-Insoluble Porphyrin J-Aggregates”, Scanning, 26, I-10 (2004).
  84. K. Imura, T. Nagahara, H. Okamoto, “Imaging of Surface Plasmon and Ultrafast Dynamics in Gold Nanorods by Near-Field Microscopy”, J. Phys. Chem. B (Letters) 108, 16344 (2004).

＊他，20報 (A1) K. Imura, “金属ナノプレートの分光特性とプラズモンモード”, C & I Commun. (Letters) 43, 26-28 (2018).

研究室所属学生の受賞歴

  1. 三輪凪沙, 「Asia-Pacific Conference on Near-Field Optics (APNFO13), 優秀ポスター賞」(2022)
  2. 長谷川誠樹, 「博士学位賞」(2021)
  3. 長谷川誠樹, 「第2回プラズモニック化学研究会学生奨励賞」(2022)
  4. 深田将史, 「2021年度日本分光学会年次講演会若手ポスター賞」(2021)
  5. 神保敦子, 「BCSJ賞」(2021)
  6. 神保敦子, 「日本化学会第101回春季年会学生講演賞」(2021)
  7. 香村惟夫, 「博士学位賞」(2020)
  8. 長谷川誠樹, 「第9回CSJ化学フェスタ優秀ポスター発表賞」(2019)
  9. 長谷川誠樹, 「関根吉郎賞」(2019)
  10. 松浦拓哉, 「第12回分子科学討論会　分子科学会優秀ポスター賞」(2018)
  11. 上田慎二, 「第79回応用物理学会秋季学術講演会, 優秀ポスター賞」(2018)
  12. 神保敦子, 「International conference on Raman scattering 2018, 優秀ポスター賞」(2018)
  13. 今枝佳祐, 「平成30年度日本分光学会年次講演会優秀講演賞」(2018)
  14. 松浦拓哉, 「平成30年度日本分光学会年次講演会優秀ポスター賞」(2018)
  15. 今枝佳祐, 「第44回応用物理学会講演奨励賞 」(2018)
  16. 長谷川誠樹, 「ナノオプティクス研究グループ第24回研究討論会優秀ポスター発表賞」(2017)
  17. 平柳祐太, 「第7回CSJ化学フェスタ優秀ポスター発表賞」(2017)
  18. 長谷川誠樹, 「卒業研究発表賞」(2017)
  19. 香村惟夫, 「関根吉郎賞」(2017)
  20. 今枝佳祐, 「日本化学会春季年会学生講演賞」(2016)
  21. 今枝佳祐, 「博士学位賞」(2016)
  22. 内田多佳子, 「関根吉郎賞」(2016)
  23. 香村惟夫, 「第1回「高次複合光応答」若手の会優秀ポスター賞」(2015)
  24. 内田多佳子, 「第8回分子科学討論会優秀ポスター賞」(2014)
  25. 市川陽一, 「平成26年度日本分光学会年次講演会優秀ポスター賞」(2014)
  26. 武内麻未, 「平成25年度日本分光学会年次講演会優秀ポスター賞」(2013)
  27. 今枝佳祐, 「第7回分子科学討論会優秀口頭発表賞」(2013)
  28. 武内麻未, 「International conference on photochemistry 優秀ポスター賞」 (2013)
  29. 今枝佳祐, 「平成23年度日本分光学会年次講演会優秀ポスター賞」(2011)
  30. 今枝佳祐, 「第5回分子科学討論会優秀ポスター賞」(2011)

特許出願

  1. 特願2017-215091,「発光体の製造方法，発光体，真偽判別体，メモリ媒体，及びマスクパターン形成方法」
  2. 特願2015-184145, 「近接場分光装置」
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