MEDIATION OF ACOUSTIC ENERGY TRANSMISSION FROM ACOUSTIC-WAVE SENSORS TO THE LIQUID-PHASE BY INTERFACIAL VISCOSITY

被引：57
|
作者：
RAJAKOVIC, LV [1 ]
CAVICVLASAK, BA [1 ]
GHAEMMAGHAMI, V [1 ]
KALLURY, KMR [1 ]
KIPLING, AL [1 ]
THOMPSON, M [1 ]
机构：
[1] UNIV TORONTO,DEPT CHEM,80 ST GEORGE ST,TORONTO M5S 1A1,ONTARIO,CANADA
来源：
ANALYTICAL CHEMISTRY | 1991年 / 63卷 / 06期
关键词：
D O I：
10.1021/ac00006a012
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Frequency measurements in water for bulk acoustic wave (thickness shear mode) sensors with gold, aluminium, and silanized aluminum electrodes have been obtained by the oscillator method. Static and time-course responses for particular electrode-to-water interface conditions correlate with changes in hydrophobicity. The water-instigated alteration of the structure of silane films on aluminum electrodes has been studied by X-ray photoelectron spectroscopy, secondary ion mass spectroscopy, gas adsorption experiments, and determination of advancing contact angle with respect to water. The sensor responses are discussed in terms of perturbation of interfacial viscosity and the significance of this parameter in mediation of transfer of acoustic energy into a liquid.
引用
收藏
页码：615 / 621
页数：7
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