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Hybrid fabrication technology for nano-plasmonic devices

Research Project

Project/Area Number 19K15423
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28050:Nano/micro-systems-related
Research InstitutionTokyo Institute of Technology (2023)
Tokyo University of Science (2019-2022)

Principal Investigator

大久保 喬平  東京工業大学, 物質理工学院, 助教 (20822951)

Project Period (FY) 2019-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsプラズモニクス / ナノフォトニクス / ナノ・マイクロ微細加工 / 共振器 / 近赤外光 / ナノ加工技術 / 金属ナノ粒子 / ナノ・マイクロ加工
Outline of Research at the Start

トップダウン・ボトムアップ手法を組み合わせたハイブリッドナノ構造作製技術により、パターニングおよび金属層エッチング不要なナノプラズモニクス応用に向けた金属ナノ構造のアレイ表面を実現する。ナノ構造作製技術は高精度なマイクロマシニング手法による鋳型表面と鋳型を用いた金属成膜・結晶化ナノ構造を形成する技術からなる。

Outline of Annual Research Achievements

ナノプラズモニック・デバイス構築において、ナノ構造作製技術とプロセス設計は高性能・高精度なデバイス形成の鍵となる。金属ナノ粒子の化学合成に代表されるボトムアッププロセスや金属薄膜への微細加工などのトップダウンプロセスとそれらの組み合わせが多数報告されているが、大面積における20 nm以下の金属ナノギャップ作成は実現例に乏しい。本研究では、10 nm以下の間隙を持つ均一な金属ナノ粒子集合体を大面積で形成する作製技術の確立を目指す。特に、局在型プラズモン共鳴の基本ユニットとなる金属ナノ粒子とその間隔を制御した七量体構造は近赤外域の急峻な暗モードを持つ共振器になることから、金属ナノ粒子七量体の設計・作製に取り組んでいる。40 nm厚 SiN/Si基板上にの長方形(長辺 200 nm, 短辺 150 nm)を正六角形の中心および頂点配置した7量体テンプレートを前年度作製し、再現性のあるプロトコルを確立した。SiNテンプレート間隙にV字型溝を形成するために、水酸化カリウム溶液を用いたウェットプロセス条件の確立した。2023年度より所属変更に伴い実験装置・プロセス条件を見直す必要が出たため、超高速電子線描画装置(Advantest F-7000S)から直描型電子線描画装置(Elionix)に変更し、露光・現像条件の再検討を行った。また、反応性イオンエッチング装置によるSiN薄膜のエッチングに関しても装置の変更に伴いエッチングレートの計測などの検討を行った。

Current Status of Research Progress
Current Status of Research Progress

4: Progress in research has been delayed.

Reason

電子線描画装置の描画条件検討およびエッチング装置の条件検討は順調に進んでいる。金属薄膜形成装置による10nm程度のAu薄膜をSiN/Si基板上に形成し、初期的ではあるが電気炉によるアニーリング処理による金属ナノ粒子の形成を確認した。

Strategy for Future Research Activity

当初計画した通りの光学測定系の構築は現時点では不十分であるが、学内共通機器としてラマン分光顕微鏡が利用可能であり、作製した共振器デバイスの特性評価に向けて検討を進めている状態である。ナノデバイス作製とその評価に必要な環境・データが揃いつつある。

Report

(5 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (20 results)

All 2022 2021 2020

All Journal Article (16 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 15 results,  Open Access: 13 results) Presentation (3 results) (of which Int'l Joint Research: 3 results) Book (1 results)

  • [Journal Article] Designing Er<sup>3+</sup>/Ho<sup>3+</sup>-Doped Near-Infrared (NIR-II) Fluorescent Ceramic Particles for Avoiding Optical Absorption by Water2022

    • Author(s)
      Umezawa M, Kurahashi H, Nigoghosian K, Okubo K, Soga K
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 35 Issue: 1 Pages: 9-16

    • DOI

      10.2494/photopolymer.35.9

    • ISSN
      0914-9244, 1349-6336
    • Year and Date
      2022-12-16
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The effect of Gd-DOTA locations within PLGA-b-PEG micelles encapsulated IR-1061 on bimodal over-1000 nm near-infrared fluorescence and magnetic resonance imaging2022

    • Author(s)
      7.T.K.D. Doan, M. Umezawa, K. Okubo, M. Kamimura, M. Yamaguchi, H. Fujii, K. Soga
    • Journal Title

      Biomaterials Science

      Volume: 10 Issue: 21 Pages: 6244-6257

    • DOI

      10.1039/d2bm01213h

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Three dimensional lifetime-multiplex tomography based on time-gated capturing of near-infrared fluorescence images2022

    • Author(s)
      Umezawa M, Miyata K, Okubo K, Soga K
    • Journal Title

      Applied Sciences

      Volume: 12 Issue: 15 Pages: 7721-7721

    • DOI

      10.3390/app12157721

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The influence of Gd-DOTA conjugating ratios to PLGA-PEG micelles encapsulated IR-1061 on bimodal over-1000 nm near-infrared fluorescence and magnetic resonance imaging2022

    • Author(s)
      Doan Thi Kim Dung、Umezawa Masakazu、Ohnuki Kazunobu、Nigoghossian Karina、Okubo Kyohei、Kamimura Masao、Yamaguchi Masayuki、Fujii Hirofumi、Soga Kohei
    • Journal Title

      Biomaterials Science

      Volume: 10 Issue: 5 Pages: 1217-1230

    • DOI

      10.1039/d1bm01574e

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Heat treatment effects for controlling dye molecular states in hydrophobic core of over-1000 nm near-infrared fluorescent micellar nanoparticles2022

    • Author(s)
      M. Umezawa, H. Kobayashi, K. Ichihashi, S. Sekiyama, K. Okubo, M. Kamimura, K. Soga
    • Journal Title

      ACS Omega

      Volume: 7 Issue: 7 Pages: 5817-5824

    • DOI

      10.1021/acsomega.1c05771

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gastric cancer detection by two-step learning in near infrared hyperspectral imaging2022

    • Author(s)
      A. Yahata, H. Takemura, R. Iwanami, M. Umezawa, K. Okubo, K. Soga, T. Takamatsu, T. Mitsui, T. Kadota, T. Kuwata, H. Ikematsu, H. Yokota
    • Journal Title

      Journal of Information and Communication Engineering

      Volume: 7 Pages: 467-473

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of enantiomeric structure of hydrophobic polymer on encapsulation property of near infrared fluorescent dye for in vivo deep imaging2022

    • Author(s)
      K. Ichihashi, M. Umezawa, Y. Ueya, K. Okubo, E. Takamoto, T. Matsuda, M. Kamimura, K. Soga
    • Journal Title

      RSC Advances

      Volume: 12 Issue: 3 Pages: 1310-1318

    • DOI

      10.1039/d1ra08330a

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of the difference in refractive index on the interface of an object and the surroundings in near-infrared fluorescence tomography2022

    • Author(s)
      Takematsu Maho、Umezawa Masakazu、Sera Toshihiro、Kitagawa Yuichi、Kurahashi Hiroyuki、Yamada Shuta、Okubo Kyohei、Kamimura Masao、Yokota Hideo、Soga Kohei
    • Journal Title

      Applied Optics

      Volume: 61 Issue: 2 Pages: 638-638

    • DOI

      10.1364/ao.445357

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Review - Concept and Application of Thermal Phenomena at 4f Electrons of Trivalent Lanthanide Ions in Organic/Inorganic Hybrid Nanostructure2021

    • Author(s)
      Okubo Kyohei、Umezawa Masakazu、Soga Kohei
    • Journal Title

      ECS Journal of Solid State Science and Technology

      Volume: 10 Issue: 9 Pages: 096006-096006

    • DOI

      10.1149/2162-8777/ac2327

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of polarization of surrounding organic molecules on upconversion emission of β-NaYF4 Co-Doped with Er3+ and Yb3+2021

    • Author(s)
      Nomura Koki、Umezawa Masakazu、Tezuka Keiko、Tasaki Tomomi、Okubo Kyohei、Soga Kohei
    • Journal Title

      Journal of Luminescence

      Volume: 239 Pages: 118394-118394

    • DOI

      10.1016/j.jlumin.2021.118394

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Upconversion Luminescent Nanostructure with Ultrasmall Ceramic Nanoparticles Coupled with Rose Bengal for NIR-Induced Photodynamic Therapy2021

    • Author(s)
      Tezuka Keiko、Umezawa Masakazu、Liu Te-I、Nomura Koki、Okubo Kyohei、Chiu Hsin-Cheng、Kamimura Masao、Soga Kohei
    • Journal Title

      ACS Applied Bio Materials

      Volume: 4 Issue: 5 Pages: 4462-4469

    • DOI

      10.1021/acsabm.1c00213

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Near Infrared Fluorescent Nanostructure Design for Organic/Inorganic Hybrid System2021

    • Author(s)
      Okubo Kyohei、Umezawa Masakazu、Soga Kohei
    • Journal Title

      Biomedicines

      Volume: 9 Issue: 11 Pages: 1583-1583

    • DOI

      10.3390/biomedicines9111583

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Over 1000 nm Near-Infrared Multispectral Imaging System for Laparoscopic In Vivo Imaging2021

    • Author(s)
      Takamatsu Toshihiro、Kitagawa Yuichi、Akimoto Kohei、Iwanami Ren、Endo Yuto、Takashima Kenji、Okubo Kyohei、Umezawa Masakazu、Kuwata Takeshi、Sato Daiki、Kadota Tomohiro、Mitsui Tomohiro、Ikematsu Hiroaki、Yokota Hideo、Soga Kohei、Takemura Hiroshi
    • Journal Title

      Sensors

      Volume: 21 Issue: 8 Pages: 2649-2649

    • DOI

      10.3390/s21082649

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Visualization of quantitative lipid distribution in mouse liver through near-infrared hyperspectral imaging2021

    • Author(s)
      Okubo Kyohei、Kitagawa Yuichi、Hosokawa Naoki、Umezawa Masakazu、Kamimura Masao、Kamiya Tomonori、Ohtani Naoko、Soga Kohei
    • Journal Title

      Biomedical Optics Express

      Volume: 12 Issue: 2 Pages: 823-823

    • DOI

      10.1364/boe.413712

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Size-controlled bimodal in vivo nanoprobes as near-infrared phosphors and positive contrast agents for magnetic resonance imaging2021

    • Author(s)
      Okubo Kyohei、Takeda Ryuta、Murayama Shuhei、Umezawa Masakazu、Kamimura Masao、Osada Kensuke、Aoki Ichio、Soga Kohei
    • Journal Title

      Science and Technology of Advanced Materials

      Volume: 22 Issue: 1 Pages: 160-172

    • DOI

      10.1080/14686996.2021.1887712

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] NIR Hyperspectral Imaging2020

    • Author(s)
      Okubo Kyohei
    • Journal Title

      Transparency in Biology

      Volume: 1 Pages: 203-222

    • DOI

      10.1007/978-981-15-9627-8_10

    • ISBN
      9789811596261, 9789811596278
    • Related Report
      2020 Research-status Report
  • [Presentation] Hyperspectral imaging and detection mapping of in vivo biological tissues applying near-infrared laparoscope2022

    • Author(s)
      R. Fukushima, T. Takamatsu, A. Mori, K. Sato, K. Okubo, M. Umezawa, N. Takeshita, H. Hasegawa, H. Yokota, K. Soga, H. Takemura
    • Organizer
      SPIE Photonics West
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Near infrared hyperspectral imaging for biomedical applications including lipid visualization in liver and submucosal tumor detection2022

    • Author(s)
      K. Okubo, M. Umezawa, K. Soga
    • Organizer
      Spectral shapIng for biomedical and energy applicaTions (SHIFT 2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Strategy for designing near infrared fluorescent nanostructure with organic and inorganic hybrid system2022

    • Author(s)
      K. Okubo, M. Umezawa, K. Soga
    • Organizer
      5th International Conference on Chromogenic and Emissive Materials 2022 (I3CEM2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Book] Transparency in Biology2021

    • Author(s)
      Kohei Soga, Masakazu Umezawa, and Kyohei Okubo (Eds.)
    • Total Pages
      263
    • Publisher
      Springer Singapore
    • ISBN
      9789811596261
    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-12-25  

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