TY - JOUR
T1 - Progress in dynamic emissivity regulation
T2 - Control methods, material systems, and applications
AU - Li, Ziqi
AU - Chen, Wei
N1 - Funding Information:
The authors would like to thank the project 21975214 supported by the National Natural Science Foundation of China, the project 2018YFC2000900 supported by the National Key R&D Program of China, and the project BE1H supported by the Start-up Fund of The Hong Kong Polytechnic University.
Publisher Copyright:
© the Partner Organisations.
PY - 2021/9/7
Y1 - 2021/9/7
N2 - Advanced materials with tailored thermal emissivity underpin the performance of many technologies, including thermal detection, spacecraft components, and camouflage platforms. The thermal emissivity of materials can be modified through surface treatment such as coating and surface nanostructure. Dynamically controlling the thermal radiation of objects is of great importance, which endows materials with smart functions integrated with sensing, reacting, and even adapting and with potential for practical applications such as personal thermal management, infrared camouflage, radiative cooling, wireless communication technology, etc. This article reviews the working principles, material systems under various stimulation, and applications based on the recent progress in dynamic infrared regulation, including temperature, humidity, electricity, mechanical strain, and the above stimuli-triggered reconfigurable systems. Phase transition, ion or electron intercalation, refractive index variation, and topographic change can lead to energy level variation or change in the path of light, resulting in dynamic thermal emissivity. It is expected that new materials such as graphene and various nanostructures such as cavities and gratings have been developed rapidly in recent years, giving the possibility of low-energy-input control of flexible dynamic emissivity materials.
AB - Advanced materials with tailored thermal emissivity underpin the performance of many technologies, including thermal detection, spacecraft components, and camouflage platforms. The thermal emissivity of materials can be modified through surface treatment such as coating and surface nanostructure. Dynamically controlling the thermal radiation of objects is of great importance, which endows materials with smart functions integrated with sensing, reacting, and even adapting and with potential for practical applications such as personal thermal management, infrared camouflage, radiative cooling, wireless communication technology, etc. This article reviews the working principles, material systems under various stimulation, and applications based on the recent progress in dynamic infrared regulation, including temperature, humidity, electricity, mechanical strain, and the above stimuli-triggered reconfigurable systems. Phase transition, ion or electron intercalation, refractive index variation, and topographic change can lead to energy level variation or change in the path of light, resulting in dynamic thermal emissivity. It is expected that new materials such as graphene and various nanostructures such as cavities and gratings have been developed rapidly in recent years, giving the possibility of low-energy-input control of flexible dynamic emissivity materials.
UR - http://www.scopus.com/inward/record.url?scp=85113808293&partnerID=8YFLogxK
U2 - 10.1039/d1qm00624j
DO - 10.1039/d1qm00624j
M3 - Review article
AN - SCOPUS:85113808293
SN - 2052-1537
VL - 5
SP - 6315
EP - 6332
JO - Materials Chemistry Frontiers
JF - Materials Chemistry Frontiers
IS - 17
ER -