用银纳米片修饰石墨烯的光谱选择性热发射

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2023-10-05 DOI:10.1117/12.2692387

J. Craft, Muhammad Waqas Shabbir, D. Englund, R. Osgood, M. N. Leuenberger

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引用次数: 0

摘要

研究表明，在介质材料中，用银纳米片修饰的石墨烯通过石墨烯和银纳米片之间的声石墨烯等离子体(AGPs)实现了光谱选择性热发射。时域有限差分(FDTD)计算表明，通过栅极电压可以将光谱选择性热辐射发射调谐到两个不同的波长范围，即λ = 5 μm和λ = 8 μm之间的大气不透明区域或λ = 8 μm和λ = 12 μm之间的大气透明区域。这允许在前一种状态的辐射吸热模式和后一种状态的辐射冷却模式之间进行电气切换。

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Spectrally selective thermal emission from graphene decorated with silver nanodisks

We show that graphene decorated with Ag nanodisks realizes spectrally selective thermal emission by means of acoustic graphene plasmons (AGPs) localized between graphene and the Ag nanodisks inside a dielectric material. Our finite-difference time domain (FDTD) calculations show that the spectrally selective thermal radiation emission can be tuned by means of a gate voltage into two different wavelength regimes, namely the atmospherically opaque regime between λ = 5 μm and λ = 8 μm or the atmospherically transparent regime between λ = 8 μm and λ = 12 μm. This allows for electrical switching between a radiative heat trapping mode for the former regime and a radiative cooling mode for the latter regime.

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International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)

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