摘要
在辐射制冷、光热转换、红外隐身等领域,红外发射率是表征材料光学性能的重要参量。本文利用光学矩阵法并结合等效媒质理论对不同相体积分数和不同厚度的SiO_(2)/TiO_(2)复合涂层体系的红外发射率、可见及近红外波段的反射率等进行了模拟计算。利用上述方法可以对光学复合涂层红外发射率、反射率等光学性能参数进行预测,进而有效提高复合涂层相体积分数、膜厚等工艺参数的优化效率,减少实验工作量。该方法对于实现复合涂层的光谱选择性调控具有重要意义。
Infrared emissivity is an important parameter to characterize the optical properties of materials in the fields of radiative cooling,photothermal conversion and infrared stealth.In this paper,the infrared emissivity and reflectivity in visible and near infrared bands of SiO_(2)/TiO_(2)composite coating system with different phase volume fraction and thickness are calculated by combining optical matrix method and equivalent medium theory.The results indicated that this method could well predict the optical performance parameters such as infrared emissivity and reflectivity of optical composite coatings,effectively improve the optimization efficiency of process parameters such as phase volume fraction and film thickness of composite coatings,and reduce the experimental workload.It is of great significance to realize the spectral selective regulation of composite coatings.
作者
李隆
孙莹
刘欢
任杰
LI Long;SUN Ying;LIU Huan;REN Jie(School of Physics,Beihang University,Beijing 102206)
出处
《物理与工程》
2022年第2期25-30,共6页
Physics and Engineering
关键词
红外发射率
等效媒质理论
光学矩阵法
辐射制冷
infrared emissivity
effective medium theory
optical matrix method
radiative cooling
