| 研究課題/領域番号 |
21H01383
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| 研究種目 |
基盤研究(B)
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| 配分区分 | 補助金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分21060:電子デバイスおよび電子機器関連
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| 研究機関 | 東京大学 |
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研究代表者 |
J・J Delaunay 東京大学, 大学院工学系研究科(工学部), 准教授 (80376516)
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| 研究分担者 |
何 亜倫 東京大学, 大学院理学系研究科(理学部), 特任助教 (20815386)
松井 裕章 東京大学, 大学院工学系研究科(工学部), 准教授 (80397752)
古川 克子 東京大学, 大学院工学系研究科(工学部), 准教授 (90343144)
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| 研究期間 (年度) |
2021-04-01 – 2024-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
17,680千円 (直接経費: 13,600千円、間接経費: 4,080千円)
2023年度: 3,120千円 (直接経費: 2,400千円、間接経費: 720千円)
2022年度: 5,850千円 (直接経費: 4,500千円、間接経費: 1,350千円)
2021年度: 8,710千円 (直接経費: 6,700千円、間接経費: 2,010千円)
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| キーワード | surface waves / Bloch surface wave / surface wave / all optical logic gates / sensing / metasurface / light confinement / optical switching / optical sensing |
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| 研究開始時の研究の概要 |
Generating, guiding, and manipulating surface waves with strong spatial confinement and large propagation lengths represents the ultimate goal for sensing and light modulation. We propose a guided surface wave platform that realizes light steering, light modulation, and detection of biomarkers.
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| 研究実績の概要 |
Structures that guide surface waves on a photonic crystal were designed by simulation. These structures made of a slab of dielectric material were patterned into microstructures to realize near-zero-index guided modes that were used to launch surface waves on the photonic crystal. The separation between adjacent near-zero-index slabs was used to control the formation of constructive and/or destructive interferences that realize different optical functions mimicking optical logic gates. AND, OR, and XOR logic gates were proposed and the XOR gate was demonstrated experimentally. The logic gate device was fabricated by patterning guiding slabs by electron beam lithography, and the device response was characterized using a microscopic setup operating in the telecommunication wavelengths.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
Guiding structures have been designed on the proposed platform that performs all-optical logic operations such as AND, OR and XOR. The XOR logical gate was demonstrated experimentally. The results were published in ACS Nano a leading journal in the field of nanotechnology.
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| 今後の研究の推進方策 |
We will apply our platform to on-a-chip sensing, particularly biochemical sensing. For this purpose, the guiding structures should be re-designed together with a high sensitivity scheme dedicated to biosensing. Using simulations and experimental verifications, we will design new coupling and guiding structures and sensing interferometric schemes. Here, the detection scheme should be sensitive to a minute change in the surface conditions. Also, the characterization setup built in the first year should be modified so that biochemical reactions can be monitored in real-time by introducing a micro-fluidic system. The preliminary characterization of the biosensing detection will be based on a sensitivity study using a standard protein-ligand scheme.
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