Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy

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dc.citation.articleNumber100206en_US
dc.citation.journalTitlePhotoacousticsen_US
dc.citation.volumeNumber20en_US
dc.contributor.authorMa, Yufeien_US
dc.contributor.authorHu, Yinqiuen_US
dc.contributor.authorQiao, Shundaen_US
dc.contributor.authorHe, Yingen_US
dc.contributor.authorTittel, Frank K.en_US
dc.date.accessioned2021-12-17T20:09:11Zen_US
dc.date.available2021-12-17T20:09:11Zen_US
dc.date.issued2020en_US
dc.description.abstractA multi-quartz-enhanced photothermal spectroscopy (M-QEPTS) based trace gas detection method is reported for the first time. Different from traditional QEPTS sensor employing a single quartz tuning fork (QTF) as a photothermal detector, two QTFs were used in M-QEPTS to increase the signal amplitude by adding the generated piezoelectric signals. The coating film of the QTFs was removed in order to improve the laser absorption and transmission. Acetylene (C2H2) was chosen as the target analyte. Wavelength modulation spectroscopy (WMS) and 2nd harmonic detection were utilized for the concentration detection. Limit of detection (LoD) of 0.97 ppm was achieved with a 1 second integration time for the M-QEPTS sensor, which realized a 1.51 times signal enhancement compared to a traditional QEPTS sensor employing a single QTF. By using an Allan deviation analysis approach, LoD of 0.19 ppm for an optimum integration time of 200 s was obtained.en_US
dc.identifier.citationMa, Yufei, Hu, Yinqiu, Qiao, Shunda, et al.. "Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy." <i>Photoacoustics,</i> 20, (2020) Elsevier: https://doi.org/10.1016/j.pacs.2020.100206.en_US
dc.identifier.digital1-s2-0-S221359792030046X-mainen_US
dc.identifier.doihttps://doi.org/10.1016/j.pacs.2020.100206en_US
dc.identifier.urihttps://hdl.handle.net/1911/111884en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsThis is an open access article under the CC BY-NC-ND licenseen_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.titleTrace gas sensing based on multi-quartz-enhanced photothermal spectroscopyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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