Thermal camouflage based on the phase-changing material GST

作者：Yurui Qu, Qiang Li, Lu Cai, Meiyan Pan, Pintu Ghosh, Kaikai Du, Min Qiu · 发表于：Light Science & Applications · 年份：2018 · DOI：10.1038/s41377-018-0038-5 · 被引用次数：426 · 研究领域：Thermal Radiation and Cooling Technologies、Urban Heat Island Mitigation、Transition Metal Oxide Nanomaterials

Abstract Camouflage technology has attracted growing interest for many thermal applications. Previous experimental demonstrations of thermal camouflage technology have not adequately explored the ability to continuously camouflage objects either at varying background temperatures or for wide observation angles. In this study, a thermal camouflage device incorporating the phase-changing material Ge 2 Sb 2 Te 5 (GST) is experimentally demonstrated. It has been shown that near-perfect thermal camouflage can be continuously achieved for background temperatures ranging from 30 °C to 50 °C by tuning the emissivity of the device, which is attained by controlling the GST phase change. The thermal camouflage is robust when the observation angle is changed from 0° to 60°. This demonstration paves the way toward dynamic thermal emission control both within the scientific field and for practical applications in thermal information.