Sensor using a photo-acoustic absorption cell with two perpendicular acoustic resonators to analyze multiple molecules

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dc.contributor.authorBayraklı, İsmail
dc.contributor.authorAkman, Hatice
dc.contributor.authorSarı, Filiz
dc.date.accessioned2023-10-13T11:37:41Z
dc.date.available2023-10-13T11:37:41Z
dc.date.issued2023
dc.departmentMühendislik Fakültesi
dc.description.abstractAn ultra-high sensitivity multi-molecule sensor based on a photo-acoustic cell with two perpendicular acoustic resonators and a common microphone has been reported. In this work, a 4.5 ?m distributed-feedback quantum cascade laser and a 1.5 ?mexternal cavity diode laser (EC-DL)were used as optical excitation sources. Considering the spectral ranges of the lasers used, it is possible to analyze eight molecules (QCL V N2Oand CO2, EC-DL:H2O, H2S, NH3, CO, CH4, and C2H2). The N2O molecule was used to evaluate the performance of the photo-acoustic spectroscopy (PAS)-based sensor. A sensitivity of 0.073 V/ppm and a linearity of 0.99 were found by analyzing the PAS signal as a function of N2O concentration at 2237.656 cm-1. The long-term performance of the sensor was determined by performing an Allan deviation analysis. A minimum detection limit of 9.8 ppb for 90 s integration time was achieved. The simultaneous multi-trace gas detection capability was verified by measurement of N2O, CO2, and H2O. Depending on the coarse/fine-tuning ranges of the lasers used, the number of molecules analyzed can be further increased. Such a sensor could provide simultaneous diagnosis of many diseases through an analysis of breath air and simultaneous monitoring of the most important greenhouse gases.
dc.identifier.doi10.1364/AO.495411
dc.identifier.endpage6696en_US
dc.identifier.issn1559-128X
dc.identifier.issue25en_US
dc.identifier.pmid37706801
dc.identifier.scopusqualityQ2
dc.identifier.startpage6689en_US
dc.identifier.urihttps:/dx.doi.org10.1364/AO.495411
dc.identifier.urihttps://hdl.handle.net/20.500.12451/11167
dc.identifier.volume62en_US
dc.identifier.wosWOS:001075969800003
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherOptica Publishing Group (formerly OSA)
dc.relation.ispartofApplied Optics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAcoustic Resonators
dc.subjectAmmonia
dc.subjectCarbon Dioxide
dc.subjectDiagnosis
dc.titleSensor using a photo-acoustic absorption cell with two perpendicular acoustic resonators to analyze multiple molecules
dc.typeArticle

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