Fiber optic gas sensor with nanocrystalline ZnO

被引：50
作者：
Renganathan, B. [1 ]
Ganesan, A. R. [1 ]
机构：
[1] Indian Inst Technol, Dept Phys, Appl Opt Lab, Madras 600036, Tamil Nadu, India
来源：
OPTICAL FIBER TECHNOLOGY | 2014年 / 20卷 / 01期
关键词：
Fiber optic gas sensor; ZnO; Toxic gases; Cladding modification; Gas sensing mechanism; MECHANISM;
D O I：
10.1016/j.yofte.2013.11.007
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fiber optic gas sensor with a PMMA fiber whose clad is modified with chemically sensitive nano-crystalline zinc oxide has been developed and investigated to detect acetone, isopropyl alcohol and benzene gases. The spectral characteristics of the sensor were recorded for different concentrations ranging from (0-500 ppm) for these gases both with as-prepared and annealed nanocrystalline ZnO, and the influence of annealing on the gas sensing has been studied. The response time and recovery time were found to be 48 min. and 42 min. respectively for 500 ppm concentration. (C) 2013 Elsevier Inc. All rights reserved.
引用
收藏
页码：48 / 52
页数：5
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