随角异色光子晶体薄膜的制备与FDTD模拟

doi:10.12066/j.issn.1007-2861.1834

Abstract

Abstract:

Photonic crystals with angle-dependent structural color are developed as new optically variable ink for anti-counterfeiting. The finite difference time domain (FDTD) method is used to study light-modulated characteristics of two-dimensional photonic crystals composed of circular air cylinders. Reflection spectrums of two-dimensional photonic crystals with different hole diameters and distances between holes were simulated with optical software. Two-dimensional photonic crystals with a hole diameter 800 nm, distance between holes 800 nm, depth of holes 400 nm had good angle-dependent structural color. In the experiment, a Cr-SiO$_{x}$ two-layer structure was prepared on Si substrates by magnetron sputtering. Photonic crystals were fabricated using a photolithography method. The experiment results matched the simulation results.

Key words: photonic crystal, angle-dependent structural color, finite difference time domain

CLC Number:

O734

SHEN Chunxia, ZHANG Fangfang, HUANG Lu, MENG Qingfei, YANG Weiguang, SHI Weimin. Preparation and FDTD simulation of photonic crystal thin films with angle-dependent structural color[J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(3): 422-429.

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Preparation and FDTD simulation of photonic crystal thin films with angle-dependent structural color

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