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2019 年度 実績報告書

疾病スクリーニング装置小型化のための波長可変な狭スペクトル幅熱エミッタの研究

研究課題

研究課題/領域番号 19J13668
研究機関東京大学

研究代表者

王 智宇  東京大学, 工学系研究科, 特別研究員(DC2)

研究期間 (年度) 2019-04-25 – 2021-03-31
キーワードthermal emission / ultra-narrow bandwidth / tunable wavelength / mid-infrared
研究実績の概要

1. Finalize a publication (under review) about a wavelength-selective thermal emitter with wavelength tunability. The quality factor of the reported structure is one order above our previous work. The tunability property for such a structure is reported.

2. The properties of the proposed wavelength-selective thermal emitter are further improved using deep learning.

3. Finally, a new design for a hot carrier photodetector has been reported and verified experimentally. It is the first experimental result of a photodetector based on Tamm plasmons. These results are published in Nanoscale.

現在までの達成度 (区分)
現在までの達成度 (区分)

1: 当初の計画以上に進展している

理由

Within this year, we have conducted the optimization, simulation, fabrication, and experiment processes.
The device has a multilayer configuration. We demonstrated a pronounced resonance peak in emittance spectrum with a quality factor (Q-factor) as large as 1908. Wavelength tunability was realized by taking advantage of its thermo-optic effect. The device has been fabricatedusing RF sputtering. Upon heating, sharp peak is observed in the emittance spectrum with a large Q-factor around 780. The emission peak wavelength can be tuned within a range of 4.6 times the bandwidth of the emittance peak by adjusting the temperature. Both the Q-factor and tunabilities show larger values than that of any other tunable thermal emitters which have been reported.

今後の研究の推進方策

In the future, we consider to use deep learning techniques to design the optical behavior of a thermal emitter. Thus, many optical behaviors that is difficult to be achieved, such as arbitrarily design of double emission peaks and a minimum total thickness of a multilayer structure could be expected.

  • 研究成果

    (1件)

すべて 2019

すべて 雑誌論文 (1件) (うち国際共著 1件、 査読あり 1件)

  • [雑誌論文] Hot-electron photodetector with wavelength selectivity in near-infrared via Tamm plasmon2019

    • 著者名/発表者名
      Zhiyu Wang, J. Kenji Clark, Ya-Lun Ho and Jean-Jacques Delaunay
    • 雑誌名

      Nanoscale

      巻: 11 ページ: 17407-17414

    • DOI

      10.1039/c9nr03418h

    • 査読あり / 国際共著

URL: 

公開日: 2021-01-27  

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