Engineering optical properties of metal/porous anodic alumina films for refractometric sensing

被引：16
作者：
Wang, Lanfang [1 ]
Qin, Xiufang [1 ]
Ji, Dengxin [3 ]
Parry, James P. [2 ]
Zhang, Jinqiong [1 ]
Deng, Chenhua [1 ]
Ding, Guqiao [4 ]
Gan, Qiaoqiang [3 ]
Zeng, Hao [2 ]
Xu, Xiaohong [1 ]
机构：
[1] Shanxi Normal Univ, Minist Educ, Sch Chem & Mat Sci, Key Lab Magnet Mol & Magnet Informat Mat, Linfen 041004, Peoples R China
[2] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA
[3] SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA
[4] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200500, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 355卷
基金：
美国国家科学基金会;
关键词：
Porous anodic alumina; Color; Reflectance spectra; Refractometric chemical sensor; Low cost; POROUS ALUMINA; COLOR GENERATION; PHOTOLUMINESCENCE; FABRICATION; NANOWIRES; SUBSTRATE; OXIDE;
D O I：
10.1016/j.apsusc.2015.07.087
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We show that ultrathin metallic films deposited on porous anodic alumina (PAA) templates can enhance the reflection at certain wavelengths in the visible range, due to Fabry-Perot optical interference. The reflectance spectra can be tuned in a broad range by tuning the structural parameters of PAA including its pore depth, size and porosity. This results in tunable, iridescent colors of the films that can be spatially patterned. A refractometric chemical sensor is designed to convert the change in effective refractive index into the change in the reflectance spectra, which leads to color change discernible by naked eyes. This opens up the possibility for easy-to-operate chemical sensors with extremely low cost. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：139 / 144
页数：6
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