On the application of gold based SPR sensors for the detection of hazardous gases

被引：99
|
作者：
Nooke, A. [1 ]
Beck, U. [2 ]
Hertwig, A. [2 ]
Krause, A. [1 ]
Krueger, H. [2 ]
Lohse, V. [1 ]
Negendank, D. [1 ]
Steinbach, J. [3 ]
机构：
[1] BAM Fed Inst Mat Res & Testing, Div Gases 11 1, D-12205 Berlin, Germany
[2] BAM Fed Inst Mat Res & Testing, Div Surface Technol 6 4, D-12203 Berlin, Germany
[3] Tech Univ Berlin, D-10623 Berlin, Germany
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 149卷 / 01期
关键词：
Ellipsometry; SPR effect; Gas sensing; Gold layer; SURFACE-PLASMONS; SPECTROSCOPY; ADSORPTION; HYDROGEN;
D O I：
10.1016/j.snb.2010.05.061
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A gas sensor system based on the surface plasmon resonance (SPR) effect in a 44 nm Au layer was studied. The usability of this sensor system was investigated for several analyte gases and gas mixtures which are interesting due to their flammability, toxicity or greenhouse effect. The SPR effect of gold was measured in nitrogen and compared with the gaseous alkane series which caused a shift of the position of the SPR effect. For in situ measurements, the phase shift Delta at the SPR angle (psi minimum) in the analyte gas mixtures was measured for investigated gases in comparison with nitrogen. With this method, detection limits of different gases could be determined, which lie in a range interesting for safety engineering. Furthermore the aging effect of the gold layers which leads to loss in sensitivity of the sensor was investigated. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：194 / 198
页数：5
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