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2020 年度 実施状況報告書

Fabrication and characterization of a single-VO2-nanoparticle electronic nano-switch device

研究課題

研究課題/領域番号 20K15145
研究機関北海道大学

研究代表者

Pin Christophe  北海道大学, 電子科学研究所, 助教 (50793767)

研究期間 (年度) 2020-04-01 – 2023-03-31
キーワードelectronic nano-switch / Mott transition / vanadium dioxide / nanoparticle deposition
研究実績の概要

Gold nanostructures have been designed using COMSOL Multiphysics to enable nanoparticle optical trapping and thermal control of the trapped nanoparticle. Plasmonic nanoantennas with tailored scattering properties have been designed to enable the detection of optically trapped nanoparticles that do not emit light. The fabrication process based on electron-beam lithography has been optimized after the installation of a new gold sputtering equipment. As a first step, successful nanoparticle deposition experiments have been conducted using fluorescent nanodiamonds. Experiments are ongoing to validate this deposition process in the case of VO2 nanoparticles. Research related to a new fabrication method of VO2 nanomaterials has been started.

現在までの達成度 (区分)
現在までの達成度 (区分)

3: やや遅れている

理由

Due to the global pandemic of covid19 and the lab management duties, the experimental work has been slightly delayed, but it is ongoing now and results should be obtained during this new fiscal year. Numerical simulations have been conducted according to the initial plan and some related results have already been published and presented in an international conference.

今後の研究の推進方策

The design and the fabrication of gold nanostructures will be continued. Experiments for the trapping and deposition of VO2 nanoparticles will be continued. Another fabrication method of VO2 nanomaterials will be also investigated for comparison. The temperature of the VO2 nanoparticle will be controlled by laser-induced heating of the plasmonic nanoantenna. Resistivity measurements will be done using an electrical characterization system. A femtosecond pulsed laser source will be used for ultrafast optical control experiments. Electrically triggered phase transition will be controlled by applying a voltage bias to the gold nanoelectrodes. The properties of the nano-switch will be evaluated by recording and analyzing the spike signal generation at constant current.

次年度使用額が生じた理由

During this new financial year, electrical characterization tools and other miscellaneous expendables will be purchased. Some amount of the budget will cover fees for the usage of the clean room and scanning electron microscope facilities. Software license fees, article publication fees and conference registration fees will be also covered.

  • 研究成果

    (4件)

すべて 2021

すべて 雑誌論文 (2件) (うち国際共著 2件) 学会発表 (2件) (うち国際学会 2件)

  • [雑誌論文] Photothermal energy conversion in plasmonic nanoantennas as a new path for the local growth of ZnO in nanophotonic devices2021

    • 著者名/発表者名
      Pin Christophe, Fujiwara Hideki, Suzuki Tatsuro, Sasaki Keiji
    • 雑誌名

      Proceedings SPIE

      巻: 11696 ページ: 116960H

    • DOI

      10.1117/12.2577176

    • 国際共著
  • [雑誌論文] Nanodiamond optical sorting at the femtonewton scale inside a tapered glass capillary2021

    • 著者名/発表者名
      Pin Christophe, Otsuka Ryohei, Sasaki Keiji
    • 雑誌名

      Proceedings SPIE

      巻: 11637 ページ: 116370Q

    • DOI

      10.1117/12.2577160

    • 国際共著
  • [学会発表] Photothermal energy conversion in plasmonic nanoantennas as a new path for the local growth of ZnO in nanophotonic devices2021

    • 著者名/発表者名
      Pin Christophe、Fujiwara Hideki、Suzuki Tatsuro、Sasaki Keiji
    • 学会等名
      SPIE OPTO, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIV
    • 国際学会
  • [学会発表] Nanodiamond optical sorting at the femtonewton scale inside a tapered glass capillary2021

    • 著者名/発表者名
      Pin Christophe、Otsuka Ryohei、Sasaki Keiji
    • 学会等名
      SPIE BiOS, Microfluidics, BioMEMS, and Medical Microsystems XIX
    • 国際学会

URL: 

公開日: 2023-12-25  

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