Infrared spectrum modification of flexible fabric surface based on one-dimensional photonic crystal

Yanan Li; Xiaoli Wang; Yichun Cui; Guihua Qiu

doi:10.1117/12.2603908

24 November 2021 Infrared spectrum modification of flexible fabric surface based on one-dimensional photonic crystal

Yanan Li, Xiaoli Wang, Yichun Cui, Guihua Qiu

Proceedings Volume 12062, AOPC 2021: Optoelectronics and Nanophotonics; 1206208 (2021) https://doi.org/10.1117/12.2603908
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

Based on the principle of one-dimensional photonic crystal, ZnS and SiO2 were used as the main substrates to study the surface optical modification of various flexible fabric substrates. One dimensional photonic crystal coating structure system was constructed by extending the photonic band gap by multi heterojunction superposition and introducing disorder reasonably. Multilayer coating was carried out on the fabric surface by vacuum evaporation technology to realize the infrared selective spectrum regulation on the fabric surface. The surface spectral emissivity and coating adhesion of the fabric before and after coating were tested. The results show that the one-dimensional infrared photonic crystal structure based on flexible substrate can achieve the infrared radiation properties of infrared medium wave emissivity ≤ 0.3 and long wave emissivity ≥ 0.8; Based on this architecture, the infrared spectrum selectivity of flexible fabric surface can be realized by vacuum evaporation; For the surface of pure fabric, the bonding strength between the coating and the fabric surface is related to the surface density and surface smoothness of the fabric; Using adhesive layer to improve the surface smoothness of fabric, and further coating on this basis can effectively improve the adhesion of coating, and the adhesion level can be increased from grade 5 to grade 0; The results show that the medium wave incidence, long wave emissivity and emissivity difference are 0.15, 0.87 and 0.72, respectively; At the same time, the coating is stable in the range of 25 ℃ to 350 ℃ and has good thermal stability.

Citation Download Citation

Yanan Li, Xiaoli Wang, Yichun Cui, and Guihua Qiu "Infrared spectrum modification of flexible fabric surface based on one-dimensional photonic crystal", Proc. SPIE 12062, AOPC 2021: Optoelectronics and Nanophotonics, 1206208 (24 November 2021); https://doi.org/10.1117/12.2603908

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KEYWORDS

Coating

Photonic crystals

Infrared radiation

Statistical analysis

Adhesives

Long wavelength infrared

Mid-IR

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