Photonic Crystal-Based Sensors for Detecting Alcohol Concentration

被引：47

作者：

Kuo, Wen-Kai ^{[1
]}

Weng, Hsueh-Ping ^{[1
]}

Hsu, Jyun-Jheng ^{[1
]}

Yu, Hsin Her ^{[2
]}

机构：

[1] Natl Formosa Univ, Grad Inst Electroopt & Mat Sci, Huwei Township 63208, Yunlin, Taiwan

[2] Natl Formosa Univ, Dept Biotechnol, Huwei Township 63208, Yunlin, Taiwan

来源：

APPLIED SCIENCES-BASEL | 2016年 / 6卷 / 03期

关键词：

inverse opal; polystyrene; alcohol concentration; titania; photonic crystals; INVERSE OPAL FILMS; SENSING APPLICATIONS; TITANIA; NANOSTRUCTURES; FABRICATION; COMPOSITES; SPHERES;

D O I：

10.3390/app6030067

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polystyrene (PS) opal and titania (TiO2) inverse opal films were fabricated by the self-assembly colloidal crystal template technique. Based on Bragg's law, these sensors were used to detect the different concentrations of ethanol solution. The results indicated that TiO2 inverse opal films were advantageous over PS opal film for detecting the ethanol concentration. TiO2 inverse opal films sintered at 600 degrees C retained the highest sensitivity for ethanol concentration identification, since the anatase phase was transformed into the rutile phase, which resulted in an enhancement of the refractive index, i.e., an increase in the amount of the red shift.

引用

页数：13

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