Issue

Vol. 18 (2026)

Scalable and Healable Gradient Textiles for Multi-Scenario Radiative Cooling via Bicomponent Blow Spinning

https://doi.org/10.1007/s40820-025-01947-2
Baiyu Ji
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Yufeng Wang
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Ying Liu
Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, People’s Republic of China
Yongxu Zhao
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Fankun Xu
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Jian Huang
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Yue‑E. Miao
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Chao Zhang
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Tianxi Liu
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People’s Republic of China

Corresponding Author: Chao Zhang

czhang@dhu.edu.cn

Nano-Micro Letters, Vol. 18 (2026), Article Number: 86

Abstract

Radiative cooling textiles with spectrally selective surfaces offer a promising energy-efficient approach for sub-ambient cooling of outdoor objects and individuals. However, the spectrally selective mid-infrared emission of these textiles significantly hinders their efficient radiative heat exchange with self-heated objects, thereby posing a significant challenge to their versatile cooling applicability. Herein, we present a bicomponent blow spinning strategy for the production of scalable, ultra-flexible, and healable textiles featuring a tailored dual gradient in both chemical composition and fiber diameter. The gradient in the fiber diameter of this textile introduces a hierarchically porous structure across the sunlight incident area, thereby achieving a competitive solar reflectivity of 98.7% on its outer surface. Additionally, the gradient in the chemical composition of this textile contributes to the formation of Janus infrared-absorbing surfaces: The outer surface demonstrates a high mid-infrared emission, whereas the inner surface shows a broad infrared absorptivity, facilitating radiative heat exchange with underlying self-heated objects. Consequently, this textile demonstrates multi-scenario radiative cooling capabilities, enabling versatile outdoor cooling for unheated objects by 7.8 °C and self-heated objects by 13.6 °C, compared to commercial sunshade fabrics.


Highlights:
1 An ultra-flexible and gradient-structured textile is fabricated through bicomponent blow spinning, enabling the scalable production and in situ healing of the textile.
2 The gradient in fiber diameter of this textile creates a hierarchically porous structure in the region exposed to sunlight, resulting in a solar reflectivity of 98.7% on its outer surface.
3 The gradient in the chemical composition of this textile exhibits asymmetric spectral selectivity, wherein the outer surface offers high mid-infrared emissivity while the inner surface enables efficient radiative heat exchange.
4 The gradient textile demonstrates multi-scenario radiative cooling capabilities, enabling simultaneous cooling for unheated and self-heated outdoor objects.

Keywords

Gradient cooling textile Bicomponent blow spinning Janus spectral selectivity Radiative heat exchange Multi-scenario radiative cooling
Ji, Baiyu, Yufeng Wang, Ying Liu, Yongxu Zhao, Fankun Xu, Jian Huang, Yue‑E. Miao, Chao Zhang, and Tianxi Liu. 2025. “Scalable and Healable Gradient Textiles for Multi-Scenario Radiative Cooling via Bicomponent Blow Spinning”. Nano-Micro Letters 18 (December):86. https://doi.org/10.1007/s40820-025-01947-2.
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