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Anisotropic hygroscopic hydrogels for high-power, self-sustained passive daytime cooling

06.29.25 | Shanghai Jiao Tong University Journal Center

Anisotropic Hygroscopic Hydrogels with Synergistic Insulation-Radiation-Evaporation for High-Power and Self-Sustained Passive Daytime Cooling

Inspired by human skin structure, an anisotropic synergistically performed insulation-radiation-evaporation cooler is developed by leveraging a dual-alignment structure both internal and external to the hydrogel.The coordinated thermal and water transport through multiscale engineering contributed to high-power synergistic passive cooling in the day and water self-regeneration at night.The cooler achieved an impressive cooling power of 311 W m-2and an average sub-ambient cooling temperature of ~ Credit: Xiuli Dong, Kit-Ying Chan, Xuemin Yin, Yu Zhang, Xiaomeng Zhao, Yunfei Yang, Zhenyu Wang, Xi Shen.

Researchers from The Hong Kong Polytechnic University and Jiangnan University, led by Professor Xi Shen, have published a groundbreaking study in Nano-Micro Letters , introducing an innovative anisotropic synergistically performed insulation-radiation-evaporation (ASPIRE) cooler. This cooler leverages a dual-alignment structure within a hygroscopic hydrogel to achieve high-power passive daytime cooling with water self-regeneration.

Why the ASPIRE Cooler Matters

Innovative Design and Mechanisms

Future Outlook

Stay tuned for more groundbreaking advancements from the research team at The Hong Kong Polytechnic University and Jiangnan University as they continue to explore innovative solutions for high-power, sustainable cooling!

Nano-Micro Letters

10.1007/s40820-025-01766-5

Experimental study

Anisotropic Hygroscopic Hydrogels with Synergistic Insulation-Radiation-Evaporation for High-Power and Self-Sustained Passive Daytime Cooling

29-Apr-2025

Keywords

Evaporation Hydrogels

Article Information

Journal

Nano-Micro Letters

DOI

10.1007/s40820-025-01766-5

Method of Research

Experimental study

Article Publication Date

2025-04-29

Article Title

Anisotropic Hygroscopic Hydrogels with Synergistic Insulation-Radiation-Evaporation for High-Power and Self-Sustained Passive Daytime Cooling

Contact Information

Bowen Li

Shanghai Jiao Tong University Journal Center

qkzx@sjtu.edu.cn

Source

Original Source

https://link.springer.com/article/10.1007/s40820-025-01766-5

How to Cite This Article

APA:

Shanghai Jiao Tong University Journal Center. (2025, June 29). Anisotropic hygroscopic hydrogels for high-power, self-sustained passive daytime cooling. Brightsurf News. https://www.brightsurf.com/news/8Y4EVDDL/anisotropic-hygroscopic-hydrogels-for-high-power-self-sustained-passive-daytime-cooling.html

MLA:

"Anisotropic hygroscopic hydrogels for high-power, self-sustained passive daytime cooling." Brightsurf News, Jun. 29 2025, https://www.brightsurf.com/news/8Y4EVDDL/anisotropic-hygroscopic-hydrogels-for-high-power-self-sustained-passive-daytime-cooling.html.