A new evanescent wave ammonia sensor based on polyaniline composite

被引：35
作者：
Airoudj, A. [1 ,2 ]
Debarnot, D. [1 ]
Beche, B. [3 ]
Poncin-Epaillard, F. [1 ]
机构：
[1] Univ Maine, Lab Polymeres, UMR 6120, F-72085 Le Mans, France
[2] Univ Maine, CNRS, Acoust Lab, UMR 6613, F-72085 Le Mans, France
[3] Inst Phys Rennes, CNRS, Lab PALMS GMCM, UMR 6627 6626, F-35042 Rennes, France
来源：
TALANTA | 2008年 / 76卷 / 02期
关键词：
ammonia detection; polymer sensitive layer; planar waveguide sensor; light power variations;
D O I：
10.1016/j.talanta.2008.02.045
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A single-mode TE0-TM0 optical planar waveguide ammonia sensor based on polyaniline/polymethyl methacrylate (PANI/PMMA) composite is designed and developed. The sensing properties of the photonic sensor to ammonia at room temperature are studied. A significant change is observed in the guided light output power of the sensor after it is exposed to ammonia gas. The metrological parameters (sensitivity, response time and recovery time) of the sensor are strongly influenced by the interaction length (length of sensing region). Compared with the conventional optical ammonia sensor based on absorption spectroscopy, the integrated optical sensor is more sensitive to ammonia. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：314 / 319
页数：6
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