Facile “Synergistic Inner–Outer Activation” Strategy for Nano‐Engineering of Nature‐Skin–Derived Wearable Daytime Radiation Cooling Materials

Herein, a versatile daytime-radiation cooling wearable natural skin (RC-skin) consisting of the collagen micro-nano fibers with the on-demand double-layer radiation cooling structure is nano-engineered through the proposed facile “synergistic inner–outer activation” strategy. Owing to the subtle double-layer structure design, the solar reflectance and the average emissivity of RC-skin are ≈92.7% and ≈95%, respectively. Therefore, the RC-skin has broad-application prospects. AbstractNatural skin –derived products, as traditional wearable materials are widely used in people's daily life due to the products’ excellent origins. Herein, a versatile daytime-radiation cooling wearable natural skin (RC-skin) consisting of the collagen micro-nano fibers with the on-demand double-layer radiation cooling structure is nano-engineered through the proposed facile “synergistic inner–outer activation” strategy. The bottom layer (inner strategy) of the RC-skin is fabricated by filling the skin with the Mg11(HPO3)8(OH)6 nanoparticles by soaking. The superstratum (outer strategy) is constituted by a composite coating with an irregular microporous structure. The RC-skin harvests the inherent advantages of natural building blocks including sufficient hydrophobicity, excellent mechanical properties, and friction resistance. Owing to the subtle double-layer structure design, the solar reflectance and the average emissivity in the mid-infrared band of RC-skin are ≈92.7% and ≈...

Source: Small - March 31, 2023 Category: Nanotechnology Authors: Long Xie, Xuechuan Wang, Zhongxue Bai, Chao Wei, Manhui Zheng, Ouyang Yue, Xiaoliang Zou, Shuang Liang, Mengchen Huang, Zhenqiang Hou, Xinhua Liu Tags: Research Article Source Type: research