Issue

Vol. 18 (2026)

Engineered Radiative Cooling Systems for Thermal-Regulating and Energy-Saving Applications

https://doi.org/10.1007/s40820-025-01859-1
Leqi Lei
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, Hong Kong SAR, People’s Republic of China
Ting Wu
School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology Wuhan, Hubei 430074, People’s Republic of China
Shuo Shi
School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong, Hong Kong SAR, People’s Republic of China
Yifan Si
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, Hong Kong SAR, People’s Republic of China
Chuanwei Zhi
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, Hong Kong SAR, People’s Republic of China
Kaisong Huang
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, Hong Kong SAR, People’s Republic of China
Jieqiong Yang
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, Hong Kong SAR, People’s Republic of China
Xinshuo Liang
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, Hong Kong SAR, People’s Republic of China
Shanshan Zhu
Guangdong‑Hong Kong‑Macao Joint Laboratory of Human‑Machine Intelligence‑Synergy Systems, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China
Jinping Qu
School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology Wuhan, Hubei 430074, People’s Republic of China
Jinlian Hu
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, Hong Kong SAR, People’s Republic of China

Corresponding Author: Jinlian Hu

jinliahu@cityu.edu.hk

Nano-Micro Letters, Vol. 18 (2026), Article Number: 21

Abstract

Radiative cooling systems (RCSs) possess the distinctive capability to dissipate heat energy via solar and thermal radiation, making them suitable for thermal regulation and energy conservation applications, essential for mitigating the energy crisis. A comprehensive review connecting the advancements in engineered radiative cooling systems (ERCSs), encompassing material and structural design as well as thermal and energy-related applications, is currently absent. Herein, this review begins with a concise summary of the essential concepts of ERCSs, followed by an introduction to engineered materials and structures, containing nature-inspired designs, chromatic materials, meta-structural configurations, and multilayered constructions. It subsequently encapsulates the primary applications, including thermal-regulating textiles and energy-saving devices. Next, it highlights the challenges of ERCSs, including maximized thermoregulatory effects, environmental adaptability, scalability and sustainability, and interdisciplinary integration. It seeks to offer direction for forthcoming fundamental research and industrial advancement of radiative cooling systems in real-world applications.


Highlights:
1 This review thoroughly encapsulates the contemporary advancements in radiative cooling systems, from materials to applications.
2 Comprehensive discussion of the fundamental concepts of radiative cooling systems, engineered materials, thermal-regulating textiles and energy-saving devices.
3 The review critically evaluates the obstacles confronting radiative cooling systems, offering insightful and forward-looking solutions to shape the future trajectory of the discipline.

Keywords

Radiative cooling systems Engineered materials Thermal-regulating Energy-saving Smart applications
Lei, Leqi, Ting Wu, Shuo Shi, Yifan Si, Chuanwei Zhi, Kaisong Huang, Jieqiong Yang, Xinshuo Liang, Shanshan Zhu, Jinping Qu, and Jinlian Hu. 2025. “Engineered Radiative Cooling Systems for Thermal-Regulating and Energy-Saving Applications”. Nano-Micro Letters 18 (August):21. https://doi.org/10.1007/s40820-025-01859-1.
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