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

Gordon S. Humphries; Ralf Bauer; Michael Lengden

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

Gordon S. Humphries, Ralf Bauer, Michael Lengden

Research output: Contribution to conference › Paper › peer-review

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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.

Original language	English
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
Country/Territory	United Kingdom
City	Glasgow
Period	29/10/17 → 1/11/17
Internet address	http://www.ieee-sensors2017.org

Keywords

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

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Humphries-etal-IEEE-Sensors-2017-Performance-of-a-azimuthally-excited-3D-printed-resonatorAccepted author manuscript, 534 KB

Cite this

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title = "Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications",

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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language = "English",

note = "IEEE SENSORS 2017 ; Conference date: 29-10-2017 Through 01-11-2017",

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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/

M3 - Paper

T2 - IEEE SENSORS 2017

Y2 - 29 October 2017 through 1 November 2017

ER -

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

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Development of a Micro-electromechanical Photoacoustic Spectrometer for Industrial Applications and the Study of SO2 at High Temperatures

All-optical fiber multi-point photoacoustic spectroscopic gas sensing system

2016 EPSRC Doctoral Prize

Cite this

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

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Projects

Development of a Micro-electromechanical Photoacoustic Spectrometer for Industrial Applications and the Study of SO2 at High Temperatures

Research output

All-optical fiber multi-point photoacoustic spectroscopic gas sensing system

Prizes

2016 EPSRC Doctoral Prize

Cite this