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Chinese Physics, 2007, Vol. 16(6): 1704-1709    DOI: 10.1088/1009-1963/16/6/037
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Thin film design for advanced thermochromic smart radiator devices

Feng Yu-Dong(冯煜东)a)b), Wang Zhi-Min(王志民)b), Ma Ya-Li(马亚莉)c), and Zhang Fu-Jia(张福甲)a)
a Physics Department, Lanzhou University, Lanzhou 730000, China; b National Key Laboratory of Surface Engineering, Lanzhou Institute of Physics, Lanzhou 730000, China; c National Key Laboratory of Surface Engineering, Lanzhou Institute of Physics, Lanzhou 730000, China
Abstract  This paper describes the research on the materials and design methods for advanced smart radiator devices (SRDs) on large-area flexible substrates utilized on spacecraft. The functional material is thermochromic vanadium dioxide. The coating design of SRD is similar to the design of broadband filter coatings in a mid-infrared region. The multilayer coatings have complex structures. Coating materials must be highly transparent in a required spectrum region and also mechanically robust enough to endure the influence from the rigorous environments of outer space. The number of layers must be very small, suitable for the deposition on large-area flexible substrates. All the coatings are designed initially based on optical calculation and practical experience, and then optimized by the TFCALC software. Several designs are described and compared with each other. The results show that the emittance variability of the designed SRDs is great than 400%, more advanced than the reported ones.
Keywords:  optical design      thermochromic      vanadium dioxide      smart radiator device  
Received:  11 November 2006      Revised:  07 January 2007      Accepted manuscript online: 
PACS:  07.87.+v (Spaceborne and space research instruments, apparatus, and components (satellites, space vehicles, etc.))  
  42.15.Eq (Optical system design)  
  42.79.Ci (Filters, zone plates, and polarizers)  
  42.79.Wc (Optical coatings)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60676033).

Cite this article: 

Feng Yu-Dong(冯煜东), Wang Zhi-Min(王志民), Ma Ya-Li(马亚莉), and Zhang Fu-Jia(张福甲) Thin film design for advanced thermochromic smart radiator devices 2007 Chinese Physics 16 1704

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