Kirigami‐Inspired Reconfigurable Thermal Mimetic Device

作者：Hang Wei, Jinxin Gu, Feifei Ren, Chenchen Geng, Huan Guan, Shuhui Liang, Qingpu Fan, Jiupeng Zhao, Chengyu Wang, Shuliang Dou, Yao Li · 发表于：Laser & Photonics Review · 年份：2022 · DOI：10.1002/lpor.202200383 · 被引用次数：28 · 研究领域：Transition Metal Oxide Nanomaterials、Thermal Radiation and Cooling Technologies、Urban Heat Island Mitigation

Abstract Mimicry, a biological phenomenon whereby organisms can change their morphological characteristics to resemble another object, has stimulated the unprecedented development of devices that allow the manipulation of thermal emission. Herein, inspired by biological mimicry and the pattern evolution of Chinese Kirigami, this study demonstrates a universal and effective method to prepare devices that exhibit a reconfigurable and multilevel evolution of infrared (IR) thermal images based on vanadium dioxide (VO 2 ). The significant discrepancy between the phase transition temperatures of VO 2 with different tungsten doping fractions affords the reconfigurable response in thermal images to varying environmental temperatures. Particularly, the large degree of freedom afforded by evolution steps and local IR emissivity further consummates the thermal mimicry ability for diverse demands. Furthermore, the ultrafast response time, notable observation angle independence, and the active control system are also demonstrated. This study offers a new perspective for reconfigurable thermal mimetic devices and provides a new path for distinct applications such as IR communication, information encryption, and virtual/augmented reality.