Duquesnoy, Maxime ORCID: 0000-0003-3178-9799, Aoust, Guillaume, Melkonian, Jean-Michel ORCID: 0000-0002-3447-8446, Lévy, Raphaël ORCID: 0000-0002-4400-9993, Raybaut, Myriam ORCID: 0000-0002-8428-4148 and Godard, Antoine ORCID: 0000-0002-0284-5213
(2019)
Quartz Enhanced Photoacoustic Spectroscopy Based on a Custom Quartz Tuning Fork.
Sensors (Basel, Switzerland), 19 (6).
E1362-.
Text
Quartz Enhanced Photoacoustic Spectroscopy Based on a Custom Quartz Tuning Fork.pdf - Published version Download (2MB) | Preview |
Abstract
We have designed and fabricated a custom quartz tuning fork (QTF) with a reduced fundamental frequency; a larger gap between the prongs; and the best quality factor in air at atmospheric conditions ever reported, to our knowledge. Acoustic microresonators have been added to the QTF in order to enhance the sensor sensitivity. We demonstrate a normalized noise equivalent absorption (<i>NNEA</i>) of 3.7 × 10<sup>-9</sup> W.cm<sup>-1</sup>.Hz<sup>-1/2</sup> for CO₂ detection at atmospheric pressure. The influence of the inner diameter and length of the microresonators has been studied, as well as the penetration depth between the QTF's prongs. We investigated the acoustic isolation of our system and measured the Allan deviation of the sensor.
Item Type: | Article |
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Uncontrolled Keywords: | QEPAS, photoacoustic spectroscopy, quartz tuning fork |
Depositing User: | Symplectic Admin |
Date Deposited: | 28 Nov 2019 15:17 |
Last Modified: | 02 Feb 2024 20:39 |
DOI: | 10.3390/s19061362 |
Open Access URL: | https://www.mdpi.com/1424-8220/19/6/1362 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3063870 |