iHWG-MOX: A Hybrid Breath Analysis System via the Combination of Substrate-Integrated Hollow Waveguide Infrared Spectroscopy with Metal Oxide Gas Sensors

According to their materials and operating parameters, metal oxide (MOX) sensors respond to target gases only by a change in sensor resistance with a lack in selectivity. By the use of infrared spectroscopy, highly discriminatory information from samples at a molecular level can be obtained and the...

Full description

Saved in:
Bibliographic Details
Published in:ACS sensors 2020-04, Vol.5 (4), p.1033-1039
Main Authors: Glöckler, Johannes, Jaeschke, Carsten, Kocaöz, Yusuf, Kokoric, Vjekoslav, Tütüncü, Erhan, Mitrovics, Jan, Mizaikoff, Boris
Format: Article
Language:English
Subjects:
Biosensing Techniques - methods
Breath Tests - methods
Gases - analysis
Humans
Spectrophotometry, Infrared - methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:According to their materials and operating parameters, metal oxide (MOX) sensors respond to target gases only by a change in sensor resistance with a lack in selectivity. By the use of infrared spectroscopy, highly discriminatory information from samples at a molecular level can be obtained and the selectivity can be enhanced. A low-volume gas cell was developed for a commercially available semiconducting MOX methane gas sensor and coupled directly to a mid-infrared gas sensor based on substrate-integrated hollow waveguide (iHWG) technology combined with a Fourier transform infrared spectrometer. This study demonstrates a sensing process with combined orthogonal sensors for fast, time-resolved, and synergic detection of methane and carbon dioxide in gas samples.
ISSN:2379-3694
2379-3694
DOI:10.1021/acssensors.9b02554