DEWETTING EFFECTS ON POLYMER-COATED SURFACE-ACOUSTIC-WAVE VAPOR SENSORS

被引：69
作者：
GRATE, JW
MCGILL, RA
机构：
[1] USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375
[2] GEOCENTERS INC,FT WASHINGTON,MD 20744
来源：
ANALYTICAL CHEMISTRY | 1995年 / 67卷 / 21期
关键词：
D O I：
10.1021/ac00117a031
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Thin polymer films on surface acoustic wave device surfaces sometimes dewet the surface, leading to isolated droplets of material and a degradation in sensor performance. Dewetting has been observed to lead to decreases in baseline operating frequencies and loss of oscillation in the worst cases. The influence of surface precleaning methods has been examined, and, in general, plasma cleaning was found to be the method of choice for the preparation of the device surface for polymer application. Plasma cleaning results in an increase in the surface free energy and improves polymer adhesion so that dewetting is disfavored.
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页码：4015 / 4019
页数：5
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