Principle and Research Progress of Optical Structure of Vanadium Dioxide Intelligent Thermal Control Coating
The traditional thermal control coating with fixed emissivity is difficult to meet the rapid development of China's aerospace industry,and the VO2 intelligent thermal control coating,with the advantages of passive adaptation and strong designability,has become a hot spot of re-search at home and abroad.In this paper,based on the phase transition characteristics of VO2 metal-insulator,the optical design methods and research progress of VO2 intelligent thermal control coatings with four structures of F-P resonant cavity,metasurface,photonic crystal and nano-composite film are reviewed by analyzing the emissivity regulation mechanism of VO2 intelligent thermal control coatings in infrared band.It ex-tracts the key factors affecting the engineering application of VO2 smart thermal control coatings due to the decrease in spatial stability,and looks forward to the future development trends of VO2 smart thermal control coatings.
VO2intelligent thermal control coatingmetal-insulator phase changeoptical designspatial stability