Highly efficient and tunable selective absorber design based on metallic nanoparticles in a graded index dielectric

IF 1.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY EPJ Applied Metamaterials Pub Date : 2019-01-01 DOI:10.1051/EPJAM/2019006
R. Hamam, A. Sabbah
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Abstract

We propose a novel solar selective absorber design based on transverse localized surface plasmon resonances of infinite metallic nanorods embedded in a graded index dielectric slab. The physics principles on which the design is based are explained, and decent results are obtained by numerical simulations; solar absorptance values exceeding 0.99 are reached together with a near-zero infrared emittance. The proposed structure design offers a flexible tunability of thermal emission, and this spectral control over thermal emission promises advances not only in solar energy harvesting efficiency, but also in sensing, camouflage, and other thermal management applications.
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基于梯度折射率介质中金属纳米颗粒的高效可调谐选择性吸收体设计
我们提出了一种基于嵌入在渐变折射率介质板中的无限金属纳米棒的横向局域表面等离子体共振的新型太阳能选择性吸收器设计。阐述了设计所依据的物理原理,并通过数值模拟得到了较好的结果;太阳吸收率超过0.99,红外发射率接近于零。所提出的结构设计提供了一种灵活的热发射可调性,这种对热发射的光谱控制不仅有望提高太阳能收集效率,而且还有望在传感、伪装和其他热管理应用中取得进展。
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来源期刊
EPJ Applied Metamaterials
EPJ Applied Metamaterials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
3.10
自引率
6.20%
发文量
16
审稿时长
8 weeks
期刊最新文献
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