Thermal Camouflage Based on the Phase-changing Material GST

Overview

Journal Light Sci Appl

Publisher Springer Nature

Date 2019 Mar 7

PMID 30839556

Citations 46

Authors

Yurui Qu

Qiang Li

Lu Cai

Meiyan Pan

Pintu Ghosh

Kaikai Du

Min Qiu

Affiliations

Soon will be listed here.

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 GeSbTe (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.

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