Metal-Based Graphical SiO₂/Ag/ZnS/Ag Hetero-Structure for Visible-Infrared Compatible Camouflage

Materials (Basel). 2018 Sep 3;11(9):1594. doi: 10.3390/ma11091594.

Abstract

A brand-new approach to realizing visible-infrared compatible camouflage is proposed based on a metal-based graphical hetero-structure (MGHS) SiO₂/Ag/ZnS/Ag. For different thicknesses (20, 40, and 60 nm) of color-controlling sub-layer, high-contract and large-span structure colors (yellow, navy, and cyan) were observed due to reintroducing constructive interference with a matching intensity of reflected waves. Ultra-low infrared emissivity values of 0.04, 0.05, and 0.04 (with high average reflectance values of 95.46%, 95.31%, and 95.09%) were obtained at 3⁻14 μm. In addition, the well-performing trisecting-circle structure further indicates that it is feasible to design on-demand compatible camouflage patterns using the easily-prepared MGHS.

Keywords: compatible camouflage; metal-based structure color; multilayer structure; skin depth; ultra-low infrared emissivity.