Chemical Vapour Sensor using a SAW Resonator = SAW 공진형 디바이스를 이용한 화학 가스 센서

다국어 초록 (Multilingual Abstract)

A surface acoustic wave(SAW) device has been used as a chemical vapour sensor by coating phosphatidylethanolamine(PE) on to the device surface as an appropriate adsorptive coating. The characteristics of a PE-coated SAW resonator operating at 310 ㎒, and capable of detecting chemical vapours, such as amyl acetate, citral, β-ionone, menthone and other organic gases are described. The lowest concentration (by volume) of chemical vapours required to change the resonant frequency was different for each compound and the values were 0.1 ppm for β-ionone, 0.5 ppm for citral, 2 ppm for menthone, 10 ppm for amyl acetate and 100 ppm for alcohols, respectively. These data are in agreement with the results previously reported for olfactory cells and AT-cut crystal resonator devices. This study demonstrated that the SAW resonator device, coated with lipid, can be applied as a chemical vapor sensor.