Study on the polymer-coated Surface Acoustic Wave sensors for organic vapor detection

Jhong-Jyun Cai, H. X. Chen, Y. L. Guan, S. Chou, E. Jeng
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引用次数: 3

Abstract

The Surface Acoustic Wave (SAW) sensor technology using piezoelectric material and surface interdigital electrodes are realized as a 2-port oscillator. To improve the selectivity and sensitivity, three polymers are individually coated onto the SAW oscillators to detect organic vapors. The vapor-sensing capability is evaluated based on a 4-SAW array scheme wherein four kinds of flammable vapor like propylene, ether, butanone and benzene are under tested with polymer films including poly-vinylphenol (PVP), polystyrene (PS) and Ethyl Carbamate (EC). After obtaining the experimental result of vapor sensing, the fingerprint of their sensing characteristics can be successfully demonstrated for vapor recognition application.
有机蒸汽检测用聚合物包覆表面声波传感器的研究
利用压电材料和表面数字间电极实现了表面声波传感器技术。为了提高选择性和灵敏度,将三种聚合物分别涂覆在SAW振荡器上以检测有机蒸汽。基于4-SAW阵列方案,对丙烯、乙醚、丁酮和苯等四种可燃蒸汽进行了测试,其中包括聚乙烯酚(PVP)、聚苯乙烯(PS)和氨基甲酸乙酯(EC)聚合物薄膜。在获得蒸汽传感实验结果后,其传感特征指纹可以成功地用于蒸汽识别应用。
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