Surface acoustic wave based sensors employing ionic liquid for hydrogen sulfide gas detection

Yoshinobu Murakawa; Motoaki Hara; Hiroyuki Oguchi; Yuichiro Hamate; Hiroki Kuwano

doi:10.1007/s00542-012-1732-5

Surface acoustic wave based sensors employing ionic liquid for hydrogen sulfide gas detection

Yoshinobu Murakawa, Motoaki Hara, Hiroyuki Oguchi, Yuichiro Hamate, Hiroki Kuwano

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1255-1259
Number of pages	5
Journal	Microsystem Technologies
Volume	19
Issue number	8
DOIs	https://doi.org/10.1007/s00542-012-1732-5
Publication status	Published - 2013 Aug
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Hardware and Architecture
Electrical and Electronic Engineering

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title = "Surface acoustic wave based sensors employing ionic liquid for hydrogen sulfide gas detection",

abstract = "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.",

author = "Yoshinobu Murakawa and Motoaki Hara and Hiroyuki Oguchi and Yuichiro Hamate and Hiroki Kuwano",

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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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