RESPONSE OF A MODIFIED SURFACE-ACOUSTIC-WAVE (SAW) SENSOR SYSTEM TO CHANGES IN DIELECTRIC-CONSTANT AND SOLUTION CONDUCTIVITY

被引：1
|
作者：
YUE, LS
LI, SFY
机构：
[1] Department of Chemistry, National University of Singapore, 0511
来源：
INSTRUMENTATION SCIENCE & TECHNOLOGY | 1995年 / 23卷 / 04期
关键词：
D O I：
10.1080/10739149508014124
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A modified surface acoustic wave sensor system consisting of a 250 MHz resonator and a pair of parallel platinum electrodes in series was characterised. The frequency shift of the sensor varies almost linearly with dielectric constant and solution conductivity. Linear frequency shifts were observed as the water content of organic solvents increased. This SAW sensor system was employed to determine the critical micellar concentration of sodium dodecyl sulphate. The temperature dependence of the sensor system was also examined.
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页码：301 / 309
页数：9
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