电介质
摩尔吸收率
吸收(声学)
光学
材料科学
光电子学
调制(音乐)
相(物质)
图层(电子)
物理
纳米技术
声学
量子力学
作者
Weiren Zhu,Fajun Xiao,Ming Kang,Malin Premaratne
摘要
We design and analyze an ultra-thin metasurface consists of mono-layer all-dielectric fishnet structure. It is demonstrated that coherent perfect absorption (CPA) can be achieved in such a metasurface, and the coherent absorptivity is controllable from 0.38% to 99.85% by phase modulation. The angular selectivity of the metasurface shows the feasibility of CPA in oblique incidence circumstances, where the CPA frequency splits into two frequency bands for TE and TM polarizations. Further study reveals that while retaining CPA, the CPA frequency of the metasurface can be manipulated from 8.56 to 13.47 GHz by solely adjusting the thickness of the fishnet metasurface.
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