Ultimate scheme of optical forces: Manipulation of single molecules on the nanometer scale by utilizing localized electric field, and the operation over macroscopic regions

• Project Area: Nano-Material Manipulation and Structural Order Control with Optical Forces
• Project/Area Number: 16H06506
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Hokkaido University
• Principal Investigator: 笹木 敬司 北海道大学, 電子科学研究所, 教授 (00183822)
• Co-Investigator(Kenkyū-buntansha): 村越 敬 北海道大学, 理学研究院, 教授 (40241301) ; 森田 隆二 北海道大学, 工学研究院, 教授 (30222350) ; 深港 豪 熊本大学, 大学院先端科学研究部(工), 准教授 (80380583) ; 山根 啓作 北海道大学, 工学研究院, 准教授 (50447075)
• Project Period (FY): 2016-06-30 – 2021-03-31
• Project Status: Granted (Fiscal Year 2020)
• Budget Amount: ¥219,960,000 (Direct Cost: ¥169,200,000、Indirect Cost: ¥50,760,000); Fiscal Year 2020: ¥37,310,000 (Direct Cost: ¥28,700,000、Indirect Cost: ¥8,610,000); Fiscal Year 2019: ¥41,860,000 (Direct Cost: ¥32,200,000、Indirect Cost: ¥9,660,000); Fiscal Year 2018: ¥44,590,000 (Direct Cost: ¥34,300,000、Indirect Cost: ¥10,290,000); Fiscal Year 2017: ¥46,410,000 (Direct Cost: ¥35,700,000、Indirect Cost: ¥10,710,000); Fiscal Year 2016: ¥49,790,000 (Direct Cost: ¥38,300,000、Indirect Cost: ¥11,490,000)
• Keywords: 光ナノマニピュレーション / プラズモニックトラッピング / ナノ光渦 / 単一分子操作 / 単一分子光操作

Outline of Annual Research Achievements

本研究では、分子・分子集合体に作用する光圧をナノ空間で自在にデザインし、室温・媒質中においてナノ物質を個別選択的に捕捉・操作し、配置・配向・配列を制御する技術を世界に先駆けて開発するとともに、多様な光圧制御技術により光物質操作のマクロ化を実現する事を目的としている。
今年度は、昨年度に引き続き、高精度の金ナノ構造の作製および光圧を発生させるためのナノ局在場のデザインを行うため、開発した数値解析手法を用いて金ナノトライマー構造の局在場の解析を進めた。この知見と昨年度の技術的なノウハウを基に、実際に電子線描画装置を用いて水中で波長1064nmに共鳴を持つ金ナノボウタイ構造を作製した。10nm程度のサイズのナノギャップ部への選択的な発光体の導入を試みるため、この試作構造に水中で波長1064nmの直線偏光レーザーを照射し、ナノ粒子の捕捉を試みた。実験では、直径40nmの色素分子凝集体を用いて光捕捉を行った結果、ナノ粒子が数μmの距離から急激にギャップ部に引き寄せられ、捕捉される様子を確認した。照射レーザーを切った後もギャップ部においてナノ粒子からの蛍光が確認され、乾燥した試料のSEM像からもギャップ部に選択的にナノ粒子が堆積している様子が確認できた。また、昨年度構築したテーパーファイバーを用いたナノ粒子捕捉・輸送システムを用い、異なる波長の対向ビームの入射による捕捉粒子（NVセンター含有・非含有ナノダイヤモンド）の吸収特性を利用したナノ粒子操作・選別を試みた。粒子に作用する散乱力は、対向ビームによりキャンセルされ、吸収量の違いによる吸収力の差の分だけ、NVセンター含有・非含有粒子間の運動に差が生じる。入射レーザー光強度の最適化を行なった結果、NVセンターの有無により輸送される方向が反転し、NVセンター含有・非含有ダイヤモンドナノ粒子の選別が可能となることを示した。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

昨年度に引き続き、金属ナノ構造体に光を照射したときの局在プラズモン場の多重極特性・偏光回転特性など光電場のナノ形状のシミュレーション解析を行い、金ナノ構造のギャップ部に誘起されるナノ光電場成形に最適な金属ナノ構造サイズや形状の設計を行うと同時に、ナノ加工装置を用いた構造作製精度の向上を進め、粒子が光捕捉される確率の向上を行なった。また、これらの知見を基に、金ナノボウタイ構造の作製を行い、水中において直径40nmの色素分子凝集体の光捕捉・固定を試みた。照射直線偏光強度に応じて、ナノ粒子が数μmの範囲から引き寄せられ、構造のギャップ部に固定化される様子を確認した。捕捉用レーザー光をOFFにした後も固定化した色素分子凝集体粒子からの蛍光が確認でき、また、SEM像観察を行なったところギャップ部に複数の粒子が堆積している様子を確認した。この成果は、光―物質間相互作用が最大化されるギャップ部に選択的に蛍光物質を配置できる新たな手法として利用できることを示している。
また、ナノ粒子の捕捉・輸送だけでなく、粒子個々の吸収特性に依存した選別を試みるため、テーパーファイバーに波長の異なるレーザー光を対向配置となるように入射し、直径50nmのナノダイヤモンド粒子の光捕捉・輸送・選別を試みた。ナノダイヤモンドは、NVセンターを含む粒子（FND）と含まない粒子（NFND）を準備し、NVセンターに吸収される波長532nmのレーザーと吸収のない波長1064nmのレーザーを入射した。粒子に作用する散乱力は、対向ビームによりキャンセルされ、吸収量の違いによる吸収力の差の分だけ、FNDとNFND粒子間の運動に差が生じる。入射レーザー光強度の最適化を行なった結果、FNDとNFNDが輸送される方向が反転し、NVセンター含有の有無によってダイヤモンドナノ粒子の選別が可能となることを示した。

Strategy for Future Research Activity

ナノ粒子を選択的に金ナノ構造上に配置できることを示したので、次年度からは、より複雑なナノ光場を用いてナノ粒子を捕捉・固定化し、ナノ円偏光場による分子キラリティに応じた蛍光増強や、ナノ四重極場を利用した禁制遷移の選択励起などを行い、新規な分子認識センサーなどへの応用展開を目指していく。また、テーパーファイバーを用いたナノ粒子操作において、共鳴遷移を利用した量子ドットや蛍光分子などのより小さいナノ粒子の選別を試みるとともに、捕捉用レーザーの波長走査による高圧に基づく単一粒子分光測定の実現を目指す。

Research Products

• [Int'l Joint Research] 台湾交通大学(台湾)
• [Journal Article] Trapping and Deposition of Dye－Molecule Nanoparticles in the Nanogap of a Plasmonic Antenna (2018)
  • Author(s): Christophe Pin, Shutaro Ishida, Genta Takahashi, Kota Sudo, Tuyoshi Fukaminato, Keiji Sasaki
  • Journal Title: ACS Omega Volume: 3 Pages: 4878-4883
  • DOI: 10.1021/acsomega.8b00282
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] White light induced photo-thermal switching in a graphene-flake-mixed ZnO nanoparticle random laser (2018)
  • Author(s): Hideki Fujiwara, Ryo Niyuki, Keiji Sasaki
  • Journal Title: Journal of Physics Communications Volume: 2 Pages: 035022-035022
  • DOI: 10.1088/2399-6528/aab2d3
  • NAID: 120006471029
  • Peer Reviewed / Open Access
• [Journal Article] Nanofocusing of structured light for quadrupolar light-matter interactions (2018)
  • Author(s): Kyosuke Sakai, Takeaki Yamamoto, Keiji Sasaki
  • Journal Title: Scientific Reports Volume: 8 Pages: 7746-7746
  • DOI: 10.1038/s41598-018-26175-0
  • Peer Reviewed / Open Access
• [Journal Article] Enhanced water splitting under modal strong coupling conditions (2018)
  • Author(s): X. Shi, K. Ueno, T. Oshikiri, Q. Sun, K. Sasaki, H. Misawa
  • Journal Title: Nat. Nanotech. Volume: 13 Pages: 953-958
  • DOI: 10.1038/s41565-018-0208-x
  • Peer Reviewed
• [Journal Article] Magnetic Response of Random Lasing Modes in a ZnO nanoparticle film deposited on a NiFe thin film (2018)
  • Author(s): Hideki Fujiwara, Hideo Kaiju, Junji Nishii, Keiji Sasaki
  • Journal Title: Appl. Phys. Lett. Volume: 113 Pages: 131108-131108
  • DOI: 10.1063/1.5040720
  • Peer Reviewed
• [Journal Article] Amplified spontaneous emission from a surface-modified GaN film fabricated under pulsed intense UV laser irradiation (2018)
  • Author(s): Hideki Fujiwara, Keiji Sasaki
  • Journal Title: Applied Physics Letters Volume: 113 Pages: 171606-171606
  • DOI: 10.1063/1.5040551
  • Peer Reviewed
• [Journal Article] Nanoscale Control of Plasmon-active Metal Nanodimer Structures via Electrochemical Metal Dissolution Reaction (2018)
  • Author(s): S. Oikawa, H. Minamimoto, X. Li, K. Murakoshi
  • Journal Title: Nanotechnology Volume: 29 Pages: 045702-045702
  • DOI: 10.1088/1361-6528/aa9e78
  • Peer Reviewed
• [Journal Article] Active Tuning of Strong Coupling States between Dye Excitons and Localized Surface Plasmons via Electrochemical Potential Control (2018)
  • Author(s): F. Kato, H. Minamimoto, F. Nagasawa, Y. Yamamoto, T. Itoh, K. Murakoshi
  • Journal Title: ACS Photonics Volume: 5 Pages: 788-796
  • DOI: 10.1021/acsphotonics.7b00841
  • Peer Reviewed
• [Journal Article] Electrochemical surface-enhanced Raman scattering measurement on ligand capped PbS quantum dots at gap of Au nanodimer (2018)
  • Author(s): Li Xiaowei、Minamimoto Hiro、Murakoshi Kei
  • Journal Title: Spectrochim. Acta, Part A Volume: 197 Pages: 244-250
  • DOI: 10.1016/j.saa.2018.02.020
  • Peer Reviewed
• [Journal Article] Sensitive Raman Probe of Electronic Interaction between Monolayer Graphene and Substrate under Electrochemical Potential Control (2018)
  • Author(s): R. Zhou, S. Yasuda, H. Minamimoto, K. Murakoshi
  • Journal Title: ACS Omega Volume: 3 Pages: 2322-2328
  • DOI: 10.1021/acsomega.7b01928
  • Peer Reviewed / Open Access
• [Journal Article] Plasmonically enhanced electromotive force of narrow bandgap PbS QD-based photovoltaics (2018)
  • Author(s): Li Xiaowei、McNaughter Paul D.、O'Brien Paul、Minamimoto Hiro、Murakoshi Kei
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 20 Pages: 14818-14827
  • DOI: 10.1039/c8cp00767e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electrochemical Fine Tuning of the Plasmonic Properties of Au Lattice Structures (2018)
  • Author(s): H. Minamimoto, S. Oikawa,T. Hayashi, A. Shibazaki, X. Li, K. Murakoshi
  • Journal Title: THE JOURNAL OF PHYSICAL CHEMISTRY C Volume: 122 Pages: 14162-14167
  • DOI: 10.1021/acs.jpcc.8b01495
  • Peer Reviewed / Open Access
• [Journal Article] Thermal Effect on Plasmon-induced Electron Transfer System under Intense Pulsed Laser Illumination (2018)
  • Author(s): J. Zhang, H. Minamimoto, S. Oikawa, T. Toda, X. Li, K. Murakoshi
  • Journal Title: Chem. Lett. Volume: 47 Issue: 7 Pages: 953-955
  • DOI: 10.1246/cl.180354
  • NAID: 130007402760
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed
• [Journal Article] トポロジカル光波の発生・計測技術 (2018)
  • Author(s): 山根 啓作
  • Journal Title: 電子情報通信学会論文誌 C Volume: J101-C Pages: 509-517
  • Peer Reviewed
• [Journal Article] Photochromic fluorophores at the molecular and nanoparticle levels: fundamentals and applications of diarylethenes (2018)
  • Author(s): T. Fukaminato, S. Ishida, R. Meivier
  • Journal Title: NPG Asia Materials Volume: 10 Pages: 859-881
  • DOI: 10.1038/s41427-018-0075-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fluorescence On/Off Switching in Nanoparticles Consisting of Two Types of Diarylethenes (2018)
  • Author(s): T. Nakahama, D. Kitagawa, H. Sotome, T. Fukaminato, S. Ito, H. Miyasaka, S. Kobatake
  • Journal Title: ACS Omega Volume: 3 Pages: 2374-2382
  • DOI: 10.1021/acsomega.8b00238
  • Peer Reviewed / Open Access
• [Journal Article] Giant Fluorescence Modulation Induced by UV–vis Excitation of Benzothiadiazole Nanoparticles Doped with Diarylethene Derivatives (2018)
  • Author(s): Shino Sasaki, Tomohiro Watanabe, Yukihide Ishibashi, Tsuyoshi Fukaminato, Tsuhoshi Asahi
  • Journal Title: Chem. Lett. Volume: 47 Issue: 2 Pages: 163-166
  • DOI: 10.1246/cl.170973
  • NAID: 130006337753
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed
• [Journal Article] 蛍光性ジアリールエテンナノ粒子を用いた非線形蛍光スイッチング (2018)
  • Author(s): 石田 沙奈恵・深港 豪
  • Journal Title: 光化学 Volume: 49 Pages: 86-89
  • NAID: 40021661103
• [Journal Article] Generation of arbitrary axisymmetrically polarized pulses by using the combination of 4-f spatial light modulator and common-path optical system (2018)
  • Author(s): Suzuki Masato、Yamane Keisaku、Sakamoto Moritsugu、Oka Kazuhiko、Toda Yasunori、Morita Ryuji
  • Journal Title: Optics Express Volume: 26 Pages: 2584-2584
  • DOI: 10.1364/oe.26.002584
  • Peer Reviewed / Open Access
• [Journal Article] Analysis of a nano-particle rotation using a plasmonic trimer nano-structure (2017)
  • Author(s): S. Ishida、 K.Sudo、K.Sasaki
  • Journal Title: Proceedings SPIE 10252, Optical Manipulation Conference Volume: 10252 Pages: 1025210-1025210
  • DOI: 10.1117/12.2275410
  • Peer Reviewed
• [Journal Article] Fabrication of low-threshold ZnO nanorod array random laser using a laser-induced hydrothermal synthesis (2017)
  • Author(s): Fujiwara Hideki、Sasaki Keiji
  • Journal Title: Proceedings of the Optofluidics 2017 Volume: - Pages: 04196-04196
  • DOI: 10.3390/optofluidics2017-04196
  • Open Access
• [Journal Article] Nano-particle rotation using a gap-mode plasmonic field of nano-structure (2017)
  • Author(s): Ishida Shutaro、Sudo Kota、Sasaki Keiji
  • Journal Title: Proceedings of Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC) Volume: 17358908 Pages: 8114976-8114976
  • DOI: 10.1109/oecc.2017.8114976
  • Peer Reviewed
• [Journal Article] Localized field control at the nano-scale (2017)
  • Author(s): Hideki Fujiwara, Yuki Yasuda, Hiroaki Orita, Shutaro Ishida, and Keiji Sasaki
  • Journal Title: Proceedings SPIE 10252, Optical Manipulation Conference Volume: 10252 Pages: 1025216-1025216
  • DOI: 10.1117/12.2269158
  • Peer Reviewed
• [Journal Article] In-situ Electrochemical Surface-Enhanced Raman Scattering Observation of Molecules Accelerating the Hydrogen Evolution Reaction (2017)
  • Author(s): H. Minamimoto, F. Kato, F. Nagasawa, M. Takase, K. Murakoshi
  • Journal Title: J. Electroanal. Chem. Volume: 205 Pages: 261-269
  • DOI: 10.1039/c7fd00126f
  • Peer Reviewed
• [Journal Article] Reversible Electrochemical Tuning of Optical Property of Single Au Nano-bridged Structure via Electrochemical under Potential Deposition (2017)
  • Author(s): S. Oikawa, H. Minamimoto, K. Murakoshi
  • Journal Title: Chem. Lett. Volume: 46 Issue: 8 Pages: 1148-1150
  • DOI: 10.1246/cl.170427
  • NAID: 130005906941
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed
• [Journal Article] Plasmon Induced Selective Oxidation Reaction at Single-Walled Carbon Nanotube (2017)
  • Author(s): Yasuda Satoshi、Yoshii Takahiro、Chiashi Shohei、Maruyama Shigeo、Murakoshi Kei
  • Journal Title: ACS Appl. Mater. Inter Volume: 9 Pages: 38992-38998
  • DOI: 10.1021/acsami.7b07636
  • Peer Reviewed
• [Journal Article] Plasmonic Fields Focused to Molecular Size (2017)
  • Author(s): H. Minamimoto, S. Oikawa, X. Li, K. Murakoshi
  • Journal Title: ChemNanoMat Volume: 3 Pages: 843-856
  • DOI: 10.1002/cnma.201700149
  • Peer Reviewed
• [Journal Article] Sequential Red-Green-Blue (RGB) Fluorescence Color Photoswitching in Multicomponent Photochromic Fluorescent Nanoparticles (2017)
  • Author(s): S. Ishida, T. Fukaminato, S. Kim, T. Ogata, S. Kurihara
  • Journal Title: Chem. Lett. Volume: 46 Issue: 8 Pages: 1182-1185
  • DOI: 10.1246/cl.170436
  • NAID: 130005906938
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed
• [Journal Article] Wavelength-selective and high-contrast multicolour fluorescence photoswitching in a mixture of photochromic nanoparticles (2017)
  • Author(s): S. Ishida, T. Fukaminato, D. Kitagawa, S. Kobatake, S. Kim, T. Ogata, S. Kurihara
  • Journal Title: Chemical Communications Volume: 53 Pages: 8268-8271
  • DOI: 10.1039/c7cc02938a
  • Peer Reviewed
• [Journal Article] Thermal conductivity of graphene oxide-enhanced polyvinyl alcohol composites depending on molecular interaction (2017)
  • Author(s): S. Kim, J. Shimazu, T. Fukaminato, T. Ogata, S. Kurihara
  • Journal Title: Polymer Volume: 129 Pages: 201-206
  • DOI: 10.1016/j.polymer.2017.09.055
  • Peer Reviewed
• [Journal Article] Live Cell Imaging Using Photoswitchable Diarylethene-Doped Fluorescent Polymer Dots. (2017)
  • Author(s): Osakada Yasuko、Fukaminato Tuyoshi、Ichinose Yuma、Fujitsuka Mamoru、Harada Yoshie、Majima Tetsuro
  • Journal Title: Chem. Asia. J. Volume: 12 Pages: 2660-2665
  • DOI: 10.1002/asia.201701038
  • Peer Reviewed / Open Access
• [Journal Article] Double threshold behavior in a resonance-controlled ZnO random laser (2017)
  • Author(s): R. Niyuki, H. Fujiwara, T. Nakamura, Y. Ishikawa, N. Koshizaki, T. Tsuji, and K. Sasaki
  • Journal Title: APL Photonics Volume: 2 Pages: 036101-036101
  • DOI: 10.1063/1.4974334
  • NAID: 120006220002
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Highly Sensitive Detection of Organic Molecules in a Poly(N-isopropylacrylamide( Microassembly Formed by Plasmonic Optical Trapping (2017)
  • Author(s): T. Shoji , D. Sugo, F. Nagasawa, K. Murakoshi, N. Kitamura, Y. Tsuboi
  • Journal Title: Analytical Chemistry Volume: 89 Pages: 532-537
  • DOI: 10.1021/acs.analchem.6b04024
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] ZnO nanorod array random lasers fabricated by a laser-induced hydrothermal synthesis (2016)
  • Author(s): H. Fujiwara, T. Suzuki, R. Niyuki and K. Sasaki
  • Journal Title: New Journal of Physics Volume: 8 Pages: 103046-103046
  • DOI: 10.1088/1367-2630/18/10/103046
  • NAID: 120005890048
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Quadrupole lattice resonances in plasmonic crystal excited by cylindrical vector beams (2016)
  • Author(s): K. Sakai, K. Nomura, T. Yamamoto, T. Omura and K. Sasaki
  • Journal Title: Scientific Reports Volume: 6
  • DOI: 10.1038/srep34967
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Detailed Observation of Multiphoton Emission Enhancement from a Single Colloidal Quantum Dot Using a Silver-Coated AFM Tip (2016)
  • Author(s): H. Takata, H. Naiki, L. Wang, H. Fujiwara, K. Sasaki, N. Tamai, and S. Masuo
  • Journal Title: Nanno Letters Volume: 16 Pages: 5770-5778
  • DOI: 10.1021/acs.nanolett.6b02479
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Iron-Nitrogen-Doped Vertically Aligned Carbon Nanotube Electrocatalyst for the Oxygen Reduction Reaction (2016)
  • Author(s): Satoshi Yasuda, Atom Furuya, Yosuke Uchibori, John Kim and Kei Murakoshi
  • Journal Title: Adv. Funct. Mater. Volume: 26 Pages: 738-744
  • DOI: 10.1002/adfm.201503613
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Electronic Structure Characterization of Individual Single-Walled Carbon Nanotube by in-situ Electrochemical Surface-Enhanced Raman Scattering Spectroscopy (2016)
  • Author(s): S. Yasuda, S. Hoshina, S. Chiashi, S. Maruyama, K. Murakoshi
  • Journal Title: Nanoscale Volume: 8(45) Pages: 19093-19098
  • DOI: 10.1039/c6nr05209f
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Visualization of Active Sites for Plasmon-Induced Electron Transfer Reactions Using Photoelectrochemical Polymerization of Pyrrole (2016)
  • Author(s): H. Minamimoto, T. Toda, R. Futashima, X. Li, K. Suzuki, S. Yasuda, K.Murakoshi
  • Journal Title: Jornal of Phys Chem. C, 120(29), 16051-16058 (2016). Volume: 120(29) Pages: 16051-16058
  • DOI: 10.1021/acs.jpcc.5b12727
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Picosecond rotation of a ring-shaped optical lattice by using a chirped vortex-pulse pair (2016)
  • Author(s): K. Yamane, M. Sakamoto, N. Murakami, R. Morita, K. Oka
  • Journal Title: Optics Letters Volume: 41 Pages: 4597-4600
  • DOI: 10.1364/ol.41.004597
  • NAID: 120006337759
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Optical Manipulation with Linear and Angular Momenta in Nano-Space (2018)
  • Author(s): K. Sasaki
  • Organizer: The International Symposium on Plasmonics and Nanophotonics (iSPN2018)
  • Int'l Joint Research / Invited
• [Presentation] Nano-Space Manipulation with Designed Optical and Plasmonic Fields (2018)
  • Author(s): K. Sasaki
  • Organizer: The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON2018)
  • Int'l Joint Research / Invited
• [Presentation] Nano-Material Optical Manipulation (2018)
  • Author(s): K. Sasaki
  • Organizer: The 7th Summer Course and Workshop on“Emergent Functional Matter Science”
  • Int'l Joint Research / Invited
• [Presentation] Interactions of Plasmonic Nano-Vortex Fields with Nanoparticles and Molecules (2018)
  • Author(s): K. Sasaki
  • Organizer: Progress In Electromagnetics Research Symposium (PIERS2018)
  • Int'l Joint Research / Invited
• [Presentation] Conversion and Inversion of Plasmonic Angular Momenta in Nano-Space (2018)
  • Author(s): K. Sasaki
  • Organizer: SPIE Optics & Photonics
  • Int'l Joint Research / Invited
• [Presentation] Localized field control by plasmonic mode interference (2018)
  • Author(s): H. Fujiwara, K. Sasaki
  • Organizer: 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META2018)
  • Int'l Joint Research / Invited
• [Presentation] Molecule Manipulation using Localized Surface Plasmons at Electrified Interfaces (2018)
  • Author(s): K. Murakoshi, S. Ito, T. Shoji, H. Minamimoto,Y. Tsuboi
  • Organizer: The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials
  • Int'l Joint Research
• [Presentation] Electrochemical Control of Ultra-small Gap Distance at Metal Nanodimer Creating Highly Localized Plasmonic Field (2018)
  • Author(s): H. Minamimoto,S. Oikawa, X. Li, K. Murakoshi
  • Organizer: The 5th Optical Manipulation Conference 2018
  • Int'l Joint Research
• [Presentation] Plasmonic Hydrogen Evolution System Driven by Visible light Illumination (2018)
  • Author(s): H. Minamimoto,M. Fujii, X. Li, K. Murakoshi
  • Organizer: Asian Symposium on Nanoscience and Nanotechnology 2018 "Fundamentals and applications of Nanoclusters and Nanoparticles
  • Int'l Joint Research
• [Presentation] Electrochemical Control of Strong Coupling States between Localized Surface Plasmons and Molecule Excitons for Raman Enhancement, Surface Enhanced Raman Scattering - SERS (2018)
  • Author(s): K. Murakoshi, F. Kato, H. Minamimoto
  • Organizer: Faraday Discussions
  • Int'l Joint Research
• [Presentation] Light - Matter Interaction Monitored by Surface-Enhanced Raman Scattering (2018)
  • Author(s): K. Murakoshi
  • Organizer: The 26th International conference on Raman Spectroscopy
  • Int'l Joint Research
• [Presentation] Ultra-Fine Tuning of Plasmonic Properties for Au Nano-Structures via Electrochemical Method (2018)
  • Author(s): S. Oikawa, H. Minamimoto, K. Murakoshi
  • Organizer: 22nd Topical Meeting of International Electrochemical Society
  • Int'l Joint Research
• [Presentation] Arbitrary Optical Trapping of Small Molecule by Confined Light Energy Field under Electrochemical Potential Control (2018)
  • Author(s): N. Oyamada, X. Li, H. Minamimoto, K. Murakoshi
  • Organizer: The 10th Asian Photochemistry Conference
  • Int'l Joint Research
• [Presentation] Ultrafast spatio-temporal control of light waves by use of a chirped pulse pair (2018)
  • Author(s): K. Kakizawa, K.Iwasa,K. Yamane,Y. Toda , R.Morita
  • Organizer: The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018)
  • Int'l Joint Research
• [Presentation] Development of high-precision mode decomposition devices for optical vortices (2018)
  • Author(s): K. Yamane, Y. Watanabe, I. Wakisaka, K. Oka, Y. Toda, R. Morita
  • Organizer: Frontiers in Optics/Laser Science Conference (FiO/LS) 2018
  • Int'l Joint Research
• [Presentation] Efficient fluorescence photoswitching in photochromic nanoparticles (2018)
  • Author(s): T. Fukaminato, S. Ishida, S. Deguchi, S. Kim, S. Kurihara, R. Metivier
  • Organizer: 10th Asian Photochemisty Conference (APC 2018)
  • Int'l Joint Research / Invited
• [Presentation] Multicolor fluorescence photoswitching using fluorescent diarylethene nanoparticles (2018)
  • Author(s): S. Ishida, S. Kim, T. Ogata, S. Kurihara, T. Fukaminato
  • Organizer: 10th Asian Photochemisty Conference (APC 2018)
  • Int'l Joint Research
• [Presentation] Efficient fluorescence photoswitching in photochromic nanoparticles (2018)
  • Author(s): T. Fukaminato, S. Ishida, R. Metivier
  • Organizer: International Congress on Pure & Applied Chemistry (ICPAC Langkawi 2018)
  • Int'l Joint Research / Invited
• [Presentation] Multicolor fluorescence photoswitching in the multicomponent photochromic nanosystems (2018)
  • Author(s): S. Ishida, S. Kim, T. Ogata, S. Kurihara, T. Fukaminato
  • Organizer: International Congress on Pure & Applied Chemistry (ICPAC Langkawi 2018)
  • Int'l Joint Research
• [Presentation] Reversible fluorescence photoswitching based on the cooperative photoorientation in a dye-doped liquid crystalline polymer (2018)
  • Author(s): Y. Matsumoto, T. Hashimoto, S. Kim, T. Ogata, S. Kurihara, T. Fukaminato
  • Organizer: The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018)
  • Int'l Joint Research
• [Presentation] Multi-color fluorescence photoswitching based on a giant fluorescence quenching in fluorescent photochromic nanoparticles (2018)
  • Author(s): S. Ishida, S. Deguchi, S. Kim, T. Ogata, S. Kurihara, T. Fukaminato
  • Organizer: The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018)
  • Int'l Joint Research
• [Presentation] Generation of arbitrary axisymmetrically polarized pulses with a broadband spectrum (2018)
  • Author(s): R. Morita, M. Suzuki, K. Yamane, Y. Toda, K. Oka
  • Organizer: SPIE Photonics West 2018
  • Int'l Joint Research / Invited
• [Presentation] Multi-color fluorescence photoswitching in a mixture of fluorescent photoswitchable molecules (2018)
  • Author(s): T. Fukaminato
  • Organizer: First Workshop on Photo-active Nanomaterials with Cooperative and Synergetic Responses
  • Int'l Joint Research / Invited
• [Presentation] Multi-color fluorescence photoswitching based on a non-linear fluorescence quenching in fluorescent photochromic nanoparticles (2018)
  • Author(s): S. Ishida , T. Fukaminato, S. Kim , T. Ogata , S. Kurihara
  • Organizer: First Workshop on Photo-active Nanomaterials with Cooperative and Synergetic Responses
  • Int'l Joint Research
• [Presentation] Nano-Manipulation with Plasmonic Chiral Fields (2017)
  • Author(s): K. Sasaki, S. Ishida
  • Organizer: The 8th International Conference on Surface Plasmon Photonics(SPP8)
  • Int'l Joint Research / Invited
• [Presentation] Efficient Light Coupling to Plasmonic Nanostructures (2017)
  • Author(s): K. Sasaki
  • Organizer: Optical Nanofibre Applications (ONNA2017)
  • Int'l Joint Research / Invited
• [Presentation] Plasmonic Nano-Manipulation Using Angular Momenta (2017)
  • Author(s): K. Sasaki
  • Organizer: The Second A3 Metamaterials Forum
  • Int'l Joint Research / Invited
• [Presentation] Nano-Scale Optical Manipulation using Designed Plasmonic Fields (2017)
  • Author(s): K. Sasaki
  • Organizer: The 6th Hsinchu Summer Course and Workshop
  • Int'l Joint Research / Invited
• [Presentation] Interference of Plasmonic Vortex Fields with Different Angular Momenta (2017)
  • Author(s): K. Sasaki, H. Fujiwara
  • Organizer: 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2017)
  • Int'l Joint Research / Invited
• [Presentation] Plasmonic Nano-Shaping & Nano-Manipulation (2017)
  • Author(s): K. Sasaki, M.Ide
  • Organizer: SPIE Optics & Photonics
  • Int'l Joint Research / Invited
• [Presentation] Plasmonic Manipulation with Nano-Vortex Fields (2017)
  • Author(s): K. Sasaki
  • Organizer: The 24th Congress of the International Commission for Optics (ICO-24)
  • Int'l Joint Research / Invited
• [Presentation] Optical Manipulation Using Designed Plasmonic Fields (2017)
  • Author(s): K. Sasaki
  • Organizer: The International Nanophotonics Symposium (INP-2017)
  • Int'l Joint Research / Invited
• [Presentation] Whispering Gallery Mode Plasmonic Nano-Cavities and Their Interaction with Nanoparticles and Molecules (2017)
  • Author(s): K. Sasaki
  • Organizer: 653. WE-Heraeus-Seminar: Optical Microcavities and Their Applications (WOMA2017)
  • Int'l Joint Research / Invited
• [Presentation] Observation of Isotopic Effect on Hydrogen Evolution Process using In-situ Electrochemical Surface Enhanced Raman Scattering (2017)
  • Author(s): H.Minamimoto, K. Murakoshi
  • Organizer: The 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics
  • Int'l Joint Research / Invited
• [Presentation] Fine Tuning of Plasmonic Properties for Au Nano-Structures by Electrochemical Metal Dissolution/Deposition (2017)
  • Author(s): H.Minamimoto, S. Oikawa, K. Murakoshi
  • Organizer: The 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics
  • Int'l Joint Research / Invited
• [Presentation] Observation of Plasmon-Induced Water Oxidation and Reduction Reactions by in-Situ Electrochemical Surface-Enhanced Raman Scattering (2017)
  • Author(s): K. Murakoshi
  • Organizer: 231st ECS Meetings
  • Int'l Joint Research / Invited
• [Presentation] Control of Interaction between Light and Electrons at Electrified Interfaces (2017)
  • Author(s): K. Murakoshi
  • Organizer: 2017 International Workshop on Electrofield Interfaces for Energy Conversions
  • Int'l Joint Research / Invited
• [Presentation] Room Temperature Molecule Manipulation by Localized Surface Plasmon Resonance at Electrified Interfaces (2017)
  • Author(s): K. Murakoshi
  • Organizer: Plasmonically-Powered Processes, Gordon Research Conference
  • Int'l Joint Research / Invited
• [Presentation] Raman Observation of Monolayer Graphene on Various Substrates under Electrochemical Potential Control (2017)
  • Author(s): K. Murakoshi
  • Organizer: The 9th International Conference on Advanced Vibrational Spectroscopy
  • Int'l Joint Research / Invited
• [Presentation] In-situ Electrochemical Raman Spectroscopy for the Determination of the Fermi Level in Monolayer Graphene (2017)
  • Author(s): K. Murakoshi
  • Organizer: 6th Asian Spectroscopy Conference
  • Int'l Joint Research / Invited
• [Presentation] Characteristic Intermediates at Plasmonic Oxygen Evolution from Water (2017)
  • Author(s): K. Murakoshi
  • Organizer: ACS Publications Symposium -Innovation in Energy Conversion-
  • Int'l Joint Research / Invited
• [Presentation] Generation of intense ultrafast-rotating ring-shaped optical lattices with programmable control of rotational symmetry (2017)
  • Author(s): K. Yamane, K. Iwasa, K. Kakizawa, K. Oka, Y.i Toda and R. Morita
  • Organizer: Optics & Photonics International Congress (OPIC) 2017
  • Int'l Joint Research
• [Presentation] Amplification of ultrafast-rotating ring-shaped optical lattices (2017)
  • Author(s): K. Yamane, K. Iwasa, K. Kakizawa, K. Oka, Y.i Toda and R. Morita
  • Organizer: European Conference on Lasers and Electro-Optics (CLEO/Europe) 2017
  • Int'l Joint Research
• [Presentation] Angular momentum transfer from photons to plasmons (2017)
  • Author(s): K. Sakai, and K. Sasaki
  • Organizer: JSPS-EPSRC symposium
  • Int'l Joint Research / Invited
• [Presentation] Observation and Control of Spoof Localized Surface Plasmons Using Terahertz Nearfield Microscope Region (2016)
  • Author(s): S. Morimoto, T. Arikawa, F. Blanchard, K. Sakai, K. Sasaki, and K. Tanaka
  • Organizer: 41st International Conference on Infrared, Millimeter and Terahertz Wave (IRMMW-THZ 2016)
  • Int'l Joint Research / Invited
• [Presentation] Plasmonic Antenna for Confining Optical Vortex into Nano-Space (2016)
  • Author(s): K. Sasaki
  • Organizer: OSJ-OSA Joint Symposia
  • Int'l Joint Research / Invited
• [Presentation] Interference of nano-vortex fields formed by plasmonic cavities (2016)
  • Author(s): K. Sasaki
  • Organizer: META’16, the 7th International Conference on Metamaterials, Photonic Crystals and Plasmonics
  • Int'l Joint Research / Invited
• [Presentation] Resonance-controlled Random Lasers and Their Possible Applications (2016)
  • Author(s): H. Fujiwara and K. Sasaki
  • Organizer: The 6th International Multidiscipline Conference on Optofluidics
  • Int'l Joint Research / Invited
• [Presentation] Photon Nano-Shaping and Its Application to Photochemistry (2016)
  • Author(s): K. Sasaki
  • Organizer: Seminar in Department of Applied Chemistry
  • Int'l Joint Research / Invited
• [Presentation] Surface-Enhanced Raman Scattering from Molecule Catalysis for Hydrogen Evolution Reaction (2016)
  • Author(s): K. Murakoshi
  • Organizer: SHTP Annual International Conference 2016
  • Int'l Joint Research / Invited
• [Presentation] Plasmonic Field for Molecule Manipulation (2016)
  • Author(s): K. Murakoshi
  • Organizer: AsiaNANO 2016
  • Int'l Joint Research / Invited
• [Presentation] Photocurrent Generation of PbS Nanopartciles with Narrower Bandgap coupled with Localized Surface Plasmon Resonance (2016)
  • Author(s): H. Minamimoto, and K. Murakoshi
  • Organizer: PRiME 2016
  • Int'l Joint Research / Invited
• [Presentation] Surface-Enhanced Raman Scattering as A Probe for Interaction between Photons and Molecules at Electrified Interfaces (2016)
  • Author(s): K. Murakoshi
  • Organizer: 67th Annual Meeting of International Society of Electrochemistry
  • Int'l Joint Research / Invited
• [Presentation] Manipulation of Molecules adsorbed on Metal Nanostructures under Plasmon Excitation (2016)
  • Author(s): K. Murakoshi
  • Organizer: The 7th International Conference on Metamaterials, Photonic Crystals and Plasmonics
  • Int'l Joint Research / Invited
• [Presentation] Electronic Excitation induced by Confined Electromagnetic Filed at Electrified Interfaces (2016)
  • Author(s): H. Minamimoto, S.Yasuda, and K. Murakoshi
  • Organizer: The XIVth International Conference on Electrified Interfaces
  • Int'l Joint Research / Invited
• [Presentation] Metal Nanostructures Manipulate Light for Effective Excitation of Electrons in Materials (2016)
  • Author(s): K. Murakoshi
  • Organizer: Design and Characterization of Advanced Materials
  • Int'l Joint Research / Invited
• [Presentation] Plasmon-Induced Deposition of Conductive Polymer on Au Nanostructured TiO2 Electrode (2016)
  • Author(s): K. Murakoshi, H. Minamimoto, T. Toda, and X. Li,
  • Organizer: 229th ECS Meeting
  • Int'l Joint Research / Invited
• [Presentation] Effect of Highly Localized Plasmonic Field on Molecule Polarization (2016)
  • Author(s): K. Murakoshi
  • Organizer: Korean Raman Workshop
  • Int'l Joint Research / Invited
• [Book] CSJカレントレビュー：プラズモンと光圧が導くナノ物質科学：第５章：光ナノピンセット (2019)
  • Author(s): 深港 豪・坪井 泰之
  • Total Pages: 8
  • Publisher: 化学同人
• [Book] Photon-Working Switches, Chapter 8: Diarylethenes that photoswitch with visible light (2017)
  • Author(s): T. Fukaminato, M. Irie
  • Total Pages: 12
  • Publisher: Springer
• [Book] Photon-Working Switches, Chapter 8: Diarylethenes that Photoswitch with Visible Light (2017)
  • Author(s): T. Fukaminato, and M. Irie
  • Total Pages: 11
  • Publisher: Springer
  • ISBN: 9784431565444
• [Book] Frontiers of Plasmon Enhanced Spectroscopy, Surface-Enhanced Raman Spectroscopy for the Characterization of Semiconductor Nanostructure Surfaces (2016)
  • Author(s): X. Li, H. Minamimoto, S. Yasuda,and K. Murakoshi
  • Total Pages: 17
  • Publisher: American Chemical Society
  • ISBN: 0841232016
• [Remarks]
  • URL: http://optsys.es.hokudai.ac.jp/
• [Patent(Industrial Property Rights)] 分光装置 (2018)
  • Inventor(s): 笹木 敬司、藤原 英樹、石原 一
  • Industrial Property Rights Holder: 笹木 敬司、藤原 英樹、石原 一
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2018-163206
  • Filing Date: 2018
• [Funded Workshop] Workshop on Quantum and Nanoscale Photonics (2017)