Quartz-enhanced photoacoustic spectroscopy sensor with a small-gap quartz tuning fork

Yu Fei Ma; Yao Tong; Ying He; Jin Hu Long; Xin Yu

doi:10.3390/s18072047

Quartz-enhanced photoacoustic spectroscopy sensor with a small-gap quartz tuning fork

Yu Fei Ma^*
, Yao Tong
, Ying He
, Jin Hu Long
, Xin Yu

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology

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

16 Scopus citations

Abstract

A highly sensitive quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) with a small-gap of 200 µm was demonstrated. With the help of the finite element modeling (FEM) simulation software COMSOL, the change tendency of the QEPAS signal under the influence of the laser beam vertical position and the length of the micro-resonator (mR) were calculated theoretically. Water vapor (H₂O) was selected as the target analyte. The experimental results agreed well with those of the simulation, which verified the correctness of the theoretical model. An 11-fold signal enhancement was achieved with the addition of an mR with an optimal length of 5 mm in comparison to the bare QTF. Finally, the H₂O-QEPAS sensor, which was based on a small-gap QTF, achieved a minimum detection limit (MDL) of 1.3 ppm, indicating an improvement of the sensor performance when compared to the standard QTF that has a gap of 300 µm.

Original language	English
Article number	2047
Journal	Sensors
Volume	18
Issue number	7
DOIs	https://doi.org/10.3390/s18072047
State	Published - Jul 2018

Keywords

COMSOL
Gas sensor
QEPAS
Small-gap QTF

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10.3390/s18072047

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title = "Quartz-enhanced photoacoustic spectroscopy sensor with a small-gap quartz tuning fork",

abstract = "A highly sensitive quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) with a small-gap of 200 µm was demonstrated. With the help of the finite element modeling (FEM) simulation software COMSOL, the change tendency of the QEPAS signal under the influence of the laser beam vertical position and the length of the micro-resonator (mR) were calculated theoretically. Water vapor (H2O) was selected as the target analyte. The experimental results agreed well with those of the simulation, which verified the correctness of the theoretical model. An 11-fold signal enhancement was achieved with the addition of an mR with an optimal length of 5 mm in comparison to the bare QTF. Finally, the H2O-QEPAS sensor, which was based on a small-gap QTF, achieved a minimum detection limit (MDL) of 1.3 ppm, indicating an improvement of the sensor performance when compared to the standard QTF that has a gap of 300 µm.",

keywords = "COMSOL, Gas sensor, QEPAS, Small-gap QTF",

author = "Ma, \{Yu Fei\} and Yao Tong and Ying He and Long, \{Jin Hu\} and Xin Yu",

note = "Publisher Copyright: {\textcopyright} 2018 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2018",

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doi = "10.3390/s18072047",

language = "英语",

volume = "18",

journal = "Sensors",

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T1 - Quartz-enhanced photoacoustic spectroscopy sensor with a small-gap quartz tuning fork

AU - Ma, Yu Fei

AU - Tong, Yao

AU - He, Ying

AU - Long, Jin Hu

AU - Yu, Xin

PY - 2018/7

Y1 - 2018/7

N2 - A highly sensitive quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) with a small-gap of 200 µm was demonstrated. With the help of the finite element modeling (FEM) simulation software COMSOL, the change tendency of the QEPAS signal under the influence of the laser beam vertical position and the length of the micro-resonator (mR) were calculated theoretically. Water vapor (H2O) was selected as the target analyte. The experimental results agreed well with those of the simulation, which verified the correctness of the theoretical model. An 11-fold signal enhancement was achieved with the addition of an mR with an optimal length of 5 mm in comparison to the bare QTF. Finally, the H2O-QEPAS sensor, which was based on a small-gap QTF, achieved a minimum detection limit (MDL) of 1.3 ppm, indicating an improvement of the sensor performance when compared to the standard QTF that has a gap of 300 µm.

AB - A highly sensitive quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a custom quartz tuning fork (QTF) with a small-gap of 200 µm was demonstrated. With the help of the finite element modeling (FEM) simulation software COMSOL, the change tendency of the QEPAS signal under the influence of the laser beam vertical position and the length of the micro-resonator (mR) were calculated theoretically. Water vapor (H2O) was selected as the target analyte. The experimental results agreed well with those of the simulation, which verified the correctness of the theoretical model. An 11-fold signal enhancement was achieved with the addition of an mR with an optimal length of 5 mm in comparison to the bare QTF. Finally, the H2O-QEPAS sensor, which was based on a small-gap QTF, achieved a minimum detection limit (MDL) of 1.3 ppm, indicating an improvement of the sensor performance when compared to the standard QTF that has a gap of 300 µm.

KW - COMSOL

KW - Gas sensor

KW - QEPAS

KW - Small-gap QTF

UR - https://www.scopus.com/pages/publications/85049207713

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DO - 10.3390/s18072047

M3 - 文章

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SN - 1424-8220

VL - 18

JO - Sensors

JF - Sensors

IS - 7

M1 - 2047

ER -

Quartz-enhanced photoacoustic spectroscopy sensor with a small-gap quartz tuning fork

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Keywords

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