Radiative cooling engineering generally utilizes thermal radiation and sunlight reflection to decrease the temperature of an object or space. In this work, a polymer-based nanophotonic textile (PBNT) based on radiative cooling was fabricated and possesses high spectral selectivity (η = 5.12), IR absorbance/emittance (ε_AW = 87.31%), and sunlight reflectance (ρ = 93.28%). Indoor cooling measurement shows that the skins covered with the PBNT are 3.1–3.5 °C lower than traditional textiles. Under direct solar irradiation, the PBNT also exhibits a high cooling capability with skin temperatures 7.7–10.8 °C lower in contrast with traditional textiles. More critically, we successfully designed hydrophilic–hydrophobic Janus surfaces so that the metamaterial possesses both wonderful antifouling and moisture permeability properties. Such excellent thermal and wearable properties demonstrate the promising perspective of the PBNT for summer textiles.

中文翻译：

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用于室内和室外被动个人制冷的混合超材料纺织品

辐射冷却工程通常利用热辐射和阳光反射来降低物体或空间的温度。在这项工作中，基于辐射冷却的基于聚合物的纳米光子纺织品（PBNT）被制造并具有高的光谱选择性（η= 5.12），IR吸收/发射率（ε _AW= 87.31％）和阳光反射率（ρ= 93.28％）。室内冷却测量表明，PBNT覆盖的皮肤比传统纺织品低3.1–3.5°C。在直接日光照射下，PBNT还具有较高的冷却能力，与传统纺织品相比，其皮肤温度低7.7–10.8°C。更重要的是，我们成功地设计了亲水-疏水的Janus表面，因此超材料既具有出色的防污性能又具有透湿性。如此出色的耐热和耐磨性能证明了PBNT在夏季纺织品中的发展前景。