Angle-Selective Photonics for Smart Subambient Radiative Cooling  

作　　者：Fan Liu Qichong Zhang 

机构地区：[1]Key Laboratory of Multifunctional Nanomaterials and Smart Systems,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第8期49-52,共4页纳微快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(52473270 and T2422028);the China Postdoctoral Science Foundation(2024M763485);the National Key R&D Program of China(2022YFA1203304);the Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences(start-up grant E1552102).

摘　　要：During the daytime,conventional radiative coolers disregard the directionality of thermal radiation,thereby overlooking the upward radiation from the ground.This upward radiation enhances the outward thermal radiation,leading to a substantial reduction in the subambient daytime radiative cooling performance.Conversely,radiative coolers featuring angular asymmetry and spectral selectivity effectively resolve the problem of thermal radiation directionality,successfully evading the interference caused by the ground-generated thermal radiation.This cooler overcomes the limitations posed by the angle of incident light,making it suitable for subambient daytime radiative cooling of vertical surfaces.Furthermore,by adjusting the structure of the cooler,the angular range of thermal radiation can be modulated,enabling the application of radiative cooling technology for intelligent temperature regulation of various inclined surfaces encountered in daily life.This innovative work makes a significant contribution to the development of subambient smart thermal interaction systems and opens up new possibilities for the practical application of radiative cooling.

关 键 词：Radiative cooling Vertical surface Angular asymmetry 

分 类 号：TK124[动力工程及工程热物理—工程热物理]