21 August 2014 Visible stealth materials based on photonic crystals
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Optical thin film can be used for invisible cloak. As a kind of low-dimension photonic crystal, it is a candidate for metamaterial with designed Σ and μ. As a coating, it is convenient to be stacked to mimic continuous changing of electromagnetic media. Anti-reflection film is suitable for matching coating between layers of media.
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Guozheng Yao, Guozheng Yao, Ying Liu, Ying Liu, } "Visible stealth materials based on photonic crystals", Proc. SPIE 9283, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, 92830T (21 August 2014); doi: 10.1117/12.2069716; https://doi.org/10.1117/12.2069716

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