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Journal of Shanghai University >

2018 , Vol. 24 >Issue 3: 422 - 429

DOI: https://doi.org/10.12066/j.issn.1007-2861.1834

Research Paper

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

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  • School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

Received date: 2016-06-13

  Online published: 2018-06-27

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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

Cite this article

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, 2018 , 24(3) : 422 -429 . DOI: 10.12066/j.issn.1007-2861.1834

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