TY - JOUR
T1 - Surface acoustic wave based sensors employing ionic liquid for hydrogen sulfide gas detection
AU - Murakawa, Yoshinobu
AU - Hara, Motoaki
AU - Oguchi, Hiroyuki
AU - Hamate, Yuichiro
AU - Kuwano, Hiroki
PY - 2013/8
Y1 - 2013/8
N2 - This paper describes a new type hydrogen sulfide (H2S) gas sensor using ionic liquid (IL). In this sensor, a reservoir for the IL was integrated on a surface acoustic wave (SAW) resonator. The IL serves as an absorber for H2S gas. Mass change due to this absorption is detected as shift in the resonant frequency. In this study, we fabricated and demonstrated the sensor using the lithium niobate (LiNbO3) SAW resonator with the resonant frequency of 38 MHz. The integrated reservoir was filled by the IL 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]-[PF6]). As an experimental result, we observed the linear correlation between the frequency-shift and the exposure time of the sensor to the H2S gas.
AB - This paper describes a new type hydrogen sulfide (H2S) gas sensor using ionic liquid (IL). In this sensor, a reservoir for the IL was integrated on a surface acoustic wave (SAW) resonator. The IL serves as an absorber for H2S gas. Mass change due to this absorption is detected as shift in the resonant frequency. In this study, we fabricated and demonstrated the sensor using the lithium niobate (LiNbO3) SAW resonator with the resonant frequency of 38 MHz. The integrated reservoir was filled by the IL 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]-[PF6]). As an experimental result, we observed the linear correlation between the frequency-shift and the exposure time of the sensor to the H2S gas.
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U2 - 10.1007/s00542-012-1732-5
DO - 10.1007/s00542-012-1732-5
M3 - Article
AN - SCOPUS:84880834323
SN - 0946-7076
VL - 19
SP - 1255
EP - 1259
JO - Microsystem Technologies
JF - Microsystem Technologies
IS - 8
ER -