Maintaining human thermal comfort in cold wild is crucial for diverse outdoor activities, e.g., sports and recreation, health-care, and special occupations. To date, advanced clothes are employed to collect solar energy as heat source to stand cold climates, while their dull dark photothermal coating may hinder pragmatism in wild and visual sense considering fashion. Herein, tailor-made white webs with strong photothermal effect are proposed. With the embedding of Csx WO3 nanoparticles (NPs) as additive inside nylon nanofibers, these webs are capable of drawing both NIR and UV light in sunlight for heating. Their exceptional photothermal conversion capability enables 2.5-10.5°C warmer than that of a commercial sweatshirt of 6 times thicker under different climates. Remarkably, this smart fabric can increase its photothermal conversion efficiency in a wet state. It is optimal for fast sweat or water evaporation at human comfort temperature (38.5°C) under sunlight, and its role in thermoregulation is equally important to avoid excess heat loss in wilderness survival. Obviously, this smart web with considerable merits of shape retention, softness, safety, breathability, washability and on-demand coloration, provides a revolutionary solution to realize energy-saving outdoor thermoregulatory and simultaneously satisfy the needs of fashion and aesthetics.
|Original language||English (US)|
|State||Published - Mar 27 2023|
Bibliographical noteKAUST Repository Item: Exported on 2023-03-31
Acknowledgements: J.Y.is grateful for financial support from ERC Starting Grant NAPOLI-639720 from the European Research Council, Swedish Research Council Grant 2018-05351, and the Wallenberg Academy Fellow program (Grant KAW 2017.0166) in Sweden. M. Z. acknowledges the financial support from Swedish Research Council (2021-05839) and Aforsk Foundation (22-274). This work was supported by the financial support from National Science Foundation of China (No. 52073159), and NSFC-STINT (21911530143). As approved and confirmed by the Office for Research, Engagement and Innovation Services at Stockholm University, further ethical approval was exempted for this study on photothermal effect of fabrics on skin. The volunteer, one of the authors (Jian Chang), agreed to all tests related to photothermal effect of the as-made fabrics on skin in this work with informed consent.
ASJC Scopus subject areas
- Mechanics of Materials
- Materials Science(all)
- Mechanical Engineering