Influence of dielectrics with light absorption on the photonic bandgap of porous alumina photonic crystals
Influence of dielectrics with light absorption on the photonic bandgap of porous alumina photonic crystals作者机构：Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanostructures Institute of Solid State PhysicsHefei Institutes of Physical Science Chinese Academy of Sciences P. O. Box 1129 Hefei 230031 China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2016年第9卷第3期
页 面：703-712页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学]
基 金：中国科学院创新团队国际合作伙伴计划 国家自然科学基金 supported by National Basic Research Program of China (973 Program)
主 题：photonic crystals porous materials light-mater interaction capillary condensation nanotechnology
摘 要：In this work, the influences of dielectrics with light absorption on the photonic bandgaps （PBGs） of porous alumina photonic crystals （PCs） were studied. Transmittance spectra of porous alumina PCs adsorbing ethanol showed that all the PBGs positions red-shifted; however, the transmittance of the PBG bottom showed different trends when the PBGs were located in different wavelength regions. In the near infrared region, liquid ethanol has strong light absorption, and, with the increase in adsorption, the PBG bottom transmittance of porous alumina PCs first increased and then decreased. However, in the visible light region, liquid ethanol has little light absorption, and thus, with the increase in adsorption, the PBG bottom transmittance of porous alumina PCs increased gradually all the time. Simulated results were consistent with the experimental results. The capillary condensation of organic vapors in the pores of porous alumina accounted for the change in the PBG bottom transmittance. The non- negligible light absorption of the organic vapors was the cause of the decrease in the transmittance. The results for porous alumina PC adsorbing methanol, acetone, and toluene further confirmed the influences of light absorption on the PBG bottomed transmittance.
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