Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method
Quartz-enhanced photoacoustic spectroscopy (QEPAS) is a promising technique for trace gas sensing, offering advantages such as compact size and high sensitivity. However, noise remains a critical factor limiting detection sensitivity. In this study, a novel approach was proposed to leverage noise fo...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-06-01
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| Series: | Photoacoustics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213597925000308 |
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| author | Yingchao Xie Hao Xiong Shiling Feng Ning Pan Chuan Li Yixuan Liu Ye Zhang Ligang Shao Gaopeng Lu Kun Liu Guishi Wang |
| author_facet | Yingchao Xie Hao Xiong Shiling Feng Ning Pan Chuan Li Yixuan Liu Ye Zhang Ligang Shao Gaopeng Lu Kun Liu Guishi Wang |
| author_sort | Yingchao Xie |
| collection | DOAJ |
| description | Quartz-enhanced photoacoustic spectroscopy (QEPAS) is a promising technique for trace gas sensing, offering advantages such as compact size and high sensitivity. However, noise remains a critical factor limiting detection sensitivity. In this study, a novel approach was proposed to leverage noise for the enhancement of weak QEPAS signals. The method employs stochastic resonance (SR), which counterintuitively utilizes noise to amplify weak spectral signals, thereby significantly improving the signal-to-noise ratio of the QEPAS sensor. The effectiveness of this approach was demonstrated through methane (CH₄) detection using QEPAS. Experimental results indicate that the SR algorithm enhances the output signal by a factor of 3 and reduces the minimum detection limit (MDL) from 329 ppb to 85 ppb compared to conventional QEPAS. The proposed SR-enhanced algorithm presents a promising strategy for further improving QEPAS sensor performance in trace gas detection. |
| format | Article |
| id | doaj-art-4fd0bd4f4a26427bb438fff9f5ad78b9 |
| institution | DOAJ |
| issn | 2213-5979 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Photoacoustics |
| spelling | doaj-art-4fd0bd4f4a26427bb438fff9f5ad78b92025-08-20T02:55:52ZengElsevierPhotoacoustics2213-59792025-06-014310070710.1016/j.pacs.2025.100707Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance methodYingchao Xie0Hao Xiong1Shiling Feng2Ning Pan3Chuan Li4Yixuan Liu5Ye Zhang6Ligang Shao7Gaopeng Lu8Kun Liu9Guishi Wang10School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, ChinaCollege of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei, Anhui 230026, China; Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, ChinaLaboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, ChinaLaboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, ChinaLaboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, ChinaLaboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, ChinaLaboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, ChinaLaboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, ChinaLaboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, China; Corresponding authors.Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230000, China; Corresponding authors.Quartz-enhanced photoacoustic spectroscopy (QEPAS) is a promising technique for trace gas sensing, offering advantages such as compact size and high sensitivity. However, noise remains a critical factor limiting detection sensitivity. In this study, a novel approach was proposed to leverage noise for the enhancement of weak QEPAS signals. The method employs stochastic resonance (SR), which counterintuitively utilizes noise to amplify weak spectral signals, thereby significantly improving the signal-to-noise ratio of the QEPAS sensor. The effectiveness of this approach was demonstrated through methane (CH₄) detection using QEPAS. Experimental results indicate that the SR algorithm enhances the output signal by a factor of 3 and reduces the minimum detection limit (MDL) from 329 ppb to 85 ppb compared to conventional QEPAS. The proposed SR-enhanced algorithm presents a promising strategy for further improving QEPAS sensor performance in trace gas detection.http://www.sciencedirect.com/science/article/pii/S2213597925000308Quartz-enhanced photoacoustic spectroscopy (QEPAS)Stochastic resonance (SR)Trace gas sensorSignal enhancement |
| spellingShingle | Yingchao Xie Hao Xiong Shiling Feng Ning Pan Chuan Li Yixuan Liu Ye Zhang Ligang Shao Gaopeng Lu Kun Liu Guishi Wang Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method Photoacoustics Quartz-enhanced photoacoustic spectroscopy (QEPAS) Stochastic resonance (SR) Trace gas sensor Signal enhancement |
| title | Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method |
| title_full | Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method |
| title_fullStr | Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method |
| title_full_unstemmed | Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method |
| title_short | Sensitivity improvement of quartz-enhanced photoacoustic spectroscopy using the stochastic resonance method |
| title_sort | sensitivity improvement of quartz enhanced photoacoustic spectroscopy using the stochastic resonance method |
| topic | Quartz-enhanced photoacoustic spectroscopy (QEPAS) Stochastic resonance (SR) Trace gas sensor Signal enhancement |
| url | http://www.sciencedirect.com/science/article/pii/S2213597925000308 |
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