Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications

Gordon S. Humphries, Ralf Bauer, Michael Lengden

Research output: Contribution to conferencePaper

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.

Conference

ConferenceIEEE SENSORS 2017
CountryUnited Kingdom
CityGlasgow
Period29/10/171/11/17

Fingerprint

Resonators
Methane
Photoacoustic spectroscopy
Photopolymerization
Printing
Acoustics

Keywords

  • photoacoustic sensors
  • 3D printed photoacoustic trace gas sensor
  • 3D Printing
  • photoacoustic spectroscopy (PAS)
  • laser absorption
  • TDLS

Cite this

Humphries, G. S., Bauer, R., & Lengden, M. (2017). Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications. Paper presented at IEEE SENSORS 2017, Glasgow, United Kingdom.
Humphries, Gordon S. ; Bauer, Ralf ; Lengden, Michael. / Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications. Paper presented at IEEE SENSORS 2017, Glasgow, United Kingdom.3 p.
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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.",
keywords = "photoacoustic sensors, 3D printed photoacoustic trace gas sensor, 3D Printing, photoacoustic spectroscopy (PAS) , laser absorption, TDLS",
author = "Humphries, {Gordon S.} and Ralf Bauer and Michael Lengden",
year = "2017",
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Humphries, GS, Bauer, R & Lengden, M 2017, 'Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications' Paper presented at IEEE SENSORS 2017, Glasgow, United Kingdom, 29/10/17 - 1/11/17, .

Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications. / Humphries, Gordon S.; Bauer, Ralf; Lengden, Michael.

2017. Paper presented at IEEE SENSORS 2017, Glasgow, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications

AU - Humphries, Gordon S.

AU - Bauer, Ralf

AU - Lengden, Michael

PY - 2017/10/30

Y1 - 2017/10/30

N2 - 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.

AB - 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.

KW - photoacoustic sensors

KW - 3D printed photoacoustic trace gas sensor

KW - 3D Printing

KW - photoacoustic spectroscopy (PAS)

KW - laser absorption

KW - TDLS

UR - http://ieee-sensors2017.org/

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Humphries GS, Bauer R, Lengden M. Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications. 2017. Paper presented at IEEE SENSORS 2017, Glasgow, United Kingdom.