摘要
提出了一种能够实现近红外区域(780～1100nm)高反射的聚合物交替多层聚碳酸酯(PC)/聚甲基丙烯酸甲酯(PMMA)周期性光学薄膜的设计方案,验证了利用微纳层叠共挤设备制备特殊多层光学膜结构的可行性。利用遗传算法搜索出4个周期的最优布拉格中心波长,得出了最优膜的总厚度。仿真了4个周期叠加多层膜的光谱特性,讨论了入射角及厚度误差对多层膜近红外区域总反射率的影响。研究结果表明,所提方案满足对太阳光的隔热及内部智能采光的需求。
A scheme for designing polycarbonate(PC)/polymethyl methacrylate(PMMA)polymer alternating multilayer optical films with high reflectivity in near-infrared region(780~1100 nm)is proposed.The feasibility for the fabrication of the special multilayer optical films by the micro-nano laminated co-extrusion device is demonstrated.The optimal four-periodic Bragg center wavelength is retrieved by the genetic algorithm,and the optimum film thickness is obtained.The spectral characteristics of four-periodic superimposed multilayer films are simulated and the effects of thickness error and incident angle on the total reflectivity of the multilayer film in the near-infrared region are discussed.The results show that the proposed scheme can meet the requirements of solar heat insulation and intelligent interior lighting.
作者
黄亮
杨卫民
林承友
焦志伟
石美浓
Huang Liang;Yang Weimin;Lin Chengyou;Jiao Zhiwei;Shi Meinong(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;College of Science,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2019年第4期188-194,共7页
Laser & Optoelectronics Progress
基金
国家重点研发计划(2016YFB0302000)
北京市自然科学基金(2162033)
关键词
薄膜
近红外区域
高反射
聚碳酸酯/聚甲基丙烯酸甲酯
微层共挤
遗传算法
thin films
near-infrared region
high reflectivity
polycarbonate/polymethyl methacrylate
micro-nano multilayer co-extrusion
genetic algorithm
