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.
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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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