High-Performance Radiative Cooling Sunscreen

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-11-15 DOI:10.1021/acs.nanolett.4c04969

Jiaqi Xu, Xueke Wu, Yunrui Li, Siming Zhao, Fan Lan, Aike Xi, Ya Huang, Yilin Ding, Rufan Zhang

引用次数: 0

Abstract

Radiative cooling is a zero-energy-consumption cooling technology that shows great potential for outdoor human thermal management. To keep human skin comfortable in hot days, we herein develop a radiative cooling (RC) sunscreen that exhibits a low ultraviolet (UV) transmissivity (4.86%), a high solar reflectivity (90.19%), and a high mid-infrared emissivity (92.09%) to effectively provide both UV protection and skin cooling. As a result, the RC sunscreen exhibits a high cooling performance for decreasing the human skin temperature by 2.3–6.1 °C more than commercial sunscreens and 4.2–6.0 °C more than bare skin in a variety of outdoor scenarios in summer (e.g., low-humidity sunny days, high-humidity sunny days, and high-humidity cloudy days). In addition, the RC sunscreen also shows a good UV stability (12 h, 125 W), a high water resistance (106°), a long working life (30 days), and a good biocompatibility, thereby exhibiting promising commercial potentials in the sunscreen market.

Abstract Image

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高性能辐射冷却防晒霜

辐射冷却是一种零能耗冷却技术，在户外人体热管理方面具有巨大潜力。为了让人体皮肤在炎热的天气里保持舒适，我们在此开发了一种辐射冷却（RC）防晒霜，它具有低紫外线（UV）透过率（4.86%）、高太阳反射率（90.19%）和高中红外线发射率（92.09%），能有效地同时提供紫外线防护和皮肤冷却。因此，RC 防晒霜具有很高的降温性能，在夏季各种户外场景（如湿度低的晴天、湿度高的晴天和湿度高的阴天）中，其降低人体皮肤温度的效果比商用防晒霜高 2.3-6.1 ℃，比裸露皮肤高 4.2-6.0 ℃。此外，RC 防晒霜还具有良好的紫外线稳定性（12 小时，125 W）、高防水性（106°）、长工作寿命（30 天）和良好的生物相容性，因此在防晒霜市场上具有广阔的商业潜力。

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

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.