Bio-inspired micropatterned thermochromic hydrogel for concurrent smart solar transmission and rapid visible-light stealth at all-working temperatures  

作　　者：Huaxu Liang Xinping Zhang Fuqiang Wang Chunzhe Li Weizhe Yuan Weifeng Meng Ziming Cheng Yan Dong Xuhang Shi Yuying Yan Hongliang Yi Yong Shuai Yi Long 

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology,92 West Dazhi Street,Harbin 150001,China [2]School of Materials Science and Engineering,Nanyang Technological University,50 Nanyang Avenue,Singapore 639798,Singapore [3]Faculty of Engineering,University of Nottingham,Nottingham NG72RD,UK [4]Department of Environmental Engineering,Technical University of Denmark,Miljøvej 113,Kgs,Lyngby 2800,Denmark [5]Department of Electronic Engineering,the Chinese University of Hong Kong,New Territories,Hong Kong SAR,China

出　　处：《Light(Science & Applications)》2024年第10期2201-2211,共11页光（科学与应用)（英文版）

基　　金：National Natural Science Foundation of China (grant 52076064 and52211530089 to F. W.);The Royal Society under (grant IEC\NSFC\211210 to Y.Y.). Global STEM Professorship Scheme sponsored by the Government of HongKong Special Administrative Region, China (to Y. L.);The Fundamental ResearchFunds for the Central Universities (HIT.DZJJ.2023095 to X. Z.).

摘　　要：Thermochromic hydrogels exhibit a smart capacity for regulating solar spectrum transmission,enabling automatically change their transmissivity in response to the ambient temperature change.This has great importance for energy conservation purposes.Military and civilian emergency thermochromic applications require rapid visible-light stealth(VLS);however,concurrent smart solar transmission and rapid VLS is yet to be realized.Inspired by squid-skin,we propose a micropatterned thermochromic hydrogel(MTH)to realize the concurrent control of smart solar transmittance and rapid VLS at all-working temperatures.The MTH possesses two optical regulation mechanisms:optical property regulation and optical scattering,controlled by temperature and pressure,respectively.The introduced surface micropattern strategy can arbitrarily switch between normal and diffuse transmission,and the VLS response time is within 1 s compared with previous~180 s.The MTH also has a high solar-transmission regulation range of 61%.Further,the MTH preparation method is scalable and cost-effective.This novel regulation mechanism opens a new pathway towards applications with multifunctional optical requirements.

关 键 词：visible HYDROGEL AMBIENT 

分 类 号：TQ427.26[化学工程]