Spectrally engineered textile for radiative cooling against urban heat islands

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-06-13 DOI:10.1126/science.adl0653

Ronghui Wu, Chenxi Sui, Ting-Hsuan Chen, Zirui Zhou, Qizhang Li, Gangbin Yan, Yu Han, Jiawei Liang, Pei-Jan Hung, Edward Luo, Dmitri V. Talapin, Po-Chun Hsu

引用次数: 0

Abstract

Radiative cooling textiles hold promise for achieving personal thermal comfort under increasing global temperature. However, urban areas have heat island effects that largely diminish the effectiveness of cooling textiles as wearable fabrics because they absorb emitted radiation from the ground and nearby buildings. We developed a mid-infrared spectrally selective hierarchical fabric (SSHF) with emissivity greatly dominant in the atmospheric transmission window through molecular design, minimizing the net heat gain from the surroundings. The SSHF features a high solar spectrum reflectivity of 0.97 owing to strong Mie scattering from the nano-micro hybrid fibrous structure. The SSHF is 2.3°C cooler than a solar-reflecting broadband emitter when placed vertically in simulated outdoor urban scenarios during the day and also has excellent wearable properties.

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针对城市热岛辐射降温的光谱工程纺织品

辐射降温纺织品有望在全球气温不断升高的情况下实现个人热舒适。然而，城市地区存在热岛效应，这在很大程度上降低了降温纺织品作为可穿戴织物的效果，因为它们会吸收来自地面和附近建筑物的辐射。我们开发了一种中红外光谱选择性分层织物（SSHF），通过分子设计，其发射率在大气传输窗口中占很大优势，最大限度地减少了来自周围环境的净得热量。由于纳米-微米混合纤维结构具有很强的米氏散射，SSHF 的太阳光谱反射率高达 0.97。白天将 SSHF 垂直放置在模拟室外城市场景中，其温度比太阳能反射宽带发射器低 2.3°C，而且还具有出色的可穿戴特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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