Metamaterial-inspired infrared electrochromic devices with wideband microwave absorption for multispectral camouflage  

作　　者：ZHEN MENG DONGQING LIU JIAFU WANG YONGQIANG PANG TIANWEN LIU YAN JIA BOHENG GUI HAIFENG CHENG 

机构地区：[1]Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China [2]Shaanxi Key Laboratory of Artificially-Structured Functional Materials and Devices,Air Force Engineering University,Xi’an 710051,China [3]Electronic Materials Research Laboratory,Key Laboratory of the Ministry of Education,Xi’an Jiaotong University,Xi’an 710049,China

出　　处：《Photonics Research》2024年第11期2435-2446,共12页光子学研究(英文版)

基　　金：National Natural Science Foundation of China(52073303);Natural Science Foundation of Hunan Province(2021JJ10049)。

摘　　要：Infrared(IR)electrochromic devices,capable of dynamically controlling thermal radiation,hold promising applications in adaptive camouflage.However,the strong microwave reflective properties inherent in the device’s electrodes present a significant challenge,rendering them susceptible to radar detection and weakening their camouflage effect.Inspired by the remarkable electromagnetic control capabilities of metamaterials,the integration of frequency selective surfaces into IR electrochromic devices is proposed to address this multispectral compatibility challenge.The designed integrated metadevices simultaneously exhibit large and reversible IR emissivity tunability(Δε≥0.55 at 3–5μm,Δε≥0.5 at 7.5–13μm)and wideband microwave absorption(reflection loss≤-10 dB at 8.5–18 GHz).Furthermore,the monolithic integrated design of the shared barium fluoride substrate offers a simple device architecture,while careful design considerations mitigate coupling between IR electrochromism and microwave wideband absorption.This work introduces opportunities for the development of multispectral adaptive camouflage systems,offering potential advancements in concealment technology.

关 键 词：microwave ABSORPTION SPECTRAL 

分 类 号：O64[理学—物理化学]