Projects per year
Abstract
A design is presented for an acoustically resonant cell, based on the excitation of azimuthal resonances, to enhance the sensitivity of multi-pass photoacoustic spectroscopy. The acoustic cell is fabricated in one part using a photo-polymerization based 3D-Printing technique. Characterization of the cell performance is undertaken using calibrated concentrations of methane. The quality factor (< 76) of the cell compares favorably to existing designs based on longitudinal resonances. The minimum detectable normalized noise equivalent absorption coefficient for the cell was measured as: 3.667×10^ -10 Wcm^-1 Hz^-1/2, resulting in a minimum sensitivity for methane of 6 ppm with 700 s of averaging.
Original language | English |
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Number of pages | 3 |
Publication status | Published - 30 Oct 2017 |
Event | IEEE SENSORS 2017 - Scottish Exhibition and Conference Centre, Glasgow, United Kingdom Duration: 29 Oct 2017 → 1 Nov 2017 http://www.ieee-sensors2017.org |
Conference
Conference | IEEE SENSORS 2017 |
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Country/Territory | United Kingdom |
City | Glasgow |
Period | 29/10/17 → 1/11/17 |
Internet address |
Keywords
- photoacoustic sensors
- 3D printed photoacoustic trace gas sensor
- 3D Printing
- photoacoustic spectroscopy (PAS)
- laser absorption
- TDLS
Fingerprint
Dive into the research topics of 'Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications'. Together they form a unique fingerprint.Projects
- 1 Finished
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Development of a Micro-electromechanical Photoacoustic Spectrometer for Industrial Applications and the Study of SO2 at High Temperatures
Lengden, M. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/07/13 → 31/12/15
Project: Research
Research output
- 1 Conference contribution book
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All-optical fiber multi-point photoacoustic spectroscopic gas sensing system
Zhang, C., Yang, Y., Lin, Y., Tan, Y., Lengden, M., Humphries, G., Johnstone, W., Lut Ho, H. & Jin, W., 28 Sept 2018, Proceedings 26th International Conference on Optical Fiber Sensors. Washington, DC: Optical Society of America, 4 p.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book
Open AccessFile35 Downloads (Pure)
Prizes
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2016 EPSRC Doctoral Prize
Humphries, G. S. (Recipient), May 2016
Prize: Fellowship awarded competitively