航天器环境工程2025，Vol.42Issue(2)：201-207,7.DOI:10.12126/see.2024103
基于多尺度模拟的航天器用镧锶锰氧热控涂层光吸收性能研究
Multiscale simulation-based investigation of optical absorption properties of lanthanum strontium manganese oxide thermal control coatings for spacecraft
摘要
Abstract
Thermal control coatings serve as an important technology for spacecraft temperature management and regulation.The establishment of a multi-scale simulation framework allows for a deeper understanding of the physical and chemical properties of novel thermal control materials.A multi-scale design approach combining atomic and micro/nano scales has been developed in this study to investigate the optical absorption properties of La0.75Sr0.25MnO3(LSMO)thermal control coatings.Initially,first-principles calculations were employed to optimize the crystal structure of LSMO material and determine its critical optical constants.Subsequently,the finite-difference time-domain(FDTD)method was used to simulate the optical absorption characteristics of LSMO coatings at various thicknesses.The results demonstrate that LSMO coatings exhibit high-efficiency optical absorption across the solar spectrum,and the absorption efficiency reaches a steady state when coating thicknesses exceed 1 μm.The simulation methods used in this study provide theoretical support for revealing the optical properties of novel lanthanum strontium manganese oxide coatings,and offer a reference for the design and application development of thermal control coatings for spacecraft.关键词
镧锶锰氧/第一性原理计算/时域有限差分法/光吸收Key words
lanthanum strontium manganese oxide/first-principles calculation/finite-difference time-domain(FDTD)method/optical absorption分类
航空航天引用本文复制引用
郭昊峰,汪新智,侯光耀,马一高,韩骁,卢松涛,吴晓宏..基于多尺度模拟的航天器用镧锶锰氧热控涂层光吸收性能研究[J].航天器环境工程,2025,42(2):201-207,7.基金项目
国家重点研发计划项目(编号:2022YFB3806300) （编号:2022YFB3806300）
国家自然科学基金项目(编号:52371061) （编号:52371061）
