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arXiv 1006.4528physics.optics
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由磁共振导出的空间相干表面共振态

Spatially coherent surface resonance states derived from magnetic resonances

Zeyong Wei, Hongqiang Li, Yang Cao, Chao Wu, Jinzhi Ren, Zhihong Hang, Hong Chen, Daozhong Zhang, C. T. Chan

摘要:

包括夹在金属光栅和接地平面之间的电介质间隔物的薄超材料板被示出为具有跨越大频率范围并且可以通过结构和材料参数来调谐的空间相干表面共振态。它们产生几乎完美的角度选择性吸收,从而表现出定向热发射率。直接数值模拟表明,超材料板支持宽频率范围内的空间相干热发射,对结构无序具有鲁棒性。

英文摘要:

A thin metamaterial slab comprising a dielectric spacer sandwiched between a metallic grating and a ground plane is shown to possess spatially coherent surface resonance states that span a large frequency range and can be tuned by structural and material parameters. They give rise to nearly perfect angle-selective absorption and thus exhibit directional thermal emissivity. Direct numerical simulations show that the metamaterial slab supports spatially coherent thermal emission in a wide frequency range that is robust against structural disorder.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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