Nature Photonics (2022)
Thermal radiation is commonplace in our everyday life, exemplified by natural sunlight and infrared thermometers. When an object emits thermal radiation, a radiative cooling process carrying away energy from the object occurs spontaneously. Hence, the control of thermal radiation or radiative cooling is beneficial not only to the development of practical cooling techniques, but also to the exploitation of renewable energy resources. An emerging field of thermal photonics provides exciting opportunities for manipulating the radiative process artificially. In this review article, Shanhui Fan from Stanford University and Wei Li from Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences have discussed fundamental concepts involved in radiative cooling and summarized principles for tailoring thermal radiation with photonic structures. The story starts with the demand of daytime radiative cooling and introduces photonic concepts and recent advances in this area. Inspired by the daytime radiative cooling, more scenarios such as solar cell cooling, thermal management of outdoor colored objects and cooling textiles have been proposed. Thermodynamics in radiative cooling is finally discussed for harvesting outgoing thermal radiation. We anticipate these fruitful discussions can help readers walk into thermal photonics and motivate researchers to find novel applications of radiative cooling.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
About this article
Cite this article
Zhao, D., Qiu, M. Thermal photonics boosts radiative cooling. Light Sci Appl 11, 35 (2022). https://doi.org/10.1038/s41377-021-00691-7
Received:
Accepted:
Published:
DOI: https://doi.org/10.1038/s41377-021-00691-7
