Omnithermal Restructurable Metasurfaces for Both Infrared-Light Illusion and Visible-Light Similarity
Jun Wang, Fubao Yang, Liujun Xu, Jiping Huang
Abstract
The existing challenges in designing infrared illusion are related to complex working environments, multifold heat-transfer modes, and fabrication difficulties. Recent research focuses mainly on solving one of these challenges. In this work, we consider them synthetically and propose a class of restructurable metasurfaces to show both illusion viewed in infrared light and similarity in when viewed in visible light. We consider the three basic modes of heat transfer (omnithermotics) in theoretical designs and use radiation-cavity effects in experimental manufacture. We also make it feasible to tune the surface temperature and emissivity synergistically. Besides, such metasurfaces can work in temperature-varying backgrounds and transient states. This scheme may not only provide a platform for the design of adaptable thermal illusion but may also show robustness under multifrequency detection.