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High Sensitive and Selective Minisensor for Acetone Monitoring.

Authors :
Lombardo, Luca
Donato, Nicola
Grassini, Sabrina
Gullino, Alessio
Moulaee, Kaveh
Neri, Giovanni
Parvis, Marco
Source :
IEEE Transactions on Instrumentation & Measurement. Jun2020, Vol. 69 Issue 6, p3308-3316. 9p.
Publication Year :
2020

Abstract

This article describes a simple though extremely effective sensor for acetone monitoring in the breath. The sensor is capable of monitoring the presence of acetone at parts per million (ppm) concentrations, thus being suitable for a diabetes diagnosis. It has a dimension of $3 {\,\,\mathrm {mm}} \times 6 {\,\,\mathrm {mm}}$ and a cost of less than one dollar. The small dimensions allow one to greatly limit the power required to increase its temperature, and its high selectivity with respect to other gases present in the breath reduces the risk of false-positive responses. The sensor is based on a thin alumina substrate on which platinum strips are deposited on both faces. A thin Nb2O5 layer with a nanometric thickness provides the required sensitivity and selectivity. Sensor prototypes have been characterized by field emission scanning electron microscopy (FESEM) and X-ray photoelectron spectroscopy (XPS) and proved an inherent linear response up to a few ppm of acetone. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00189456
Volume :
69
Issue :
6
Database :
Academic Search Index
Journal :
IEEE Transactions on Instrumentation & Measurement
Publication Type :
Academic Journal
Accession number :
143230061
Full Text :
https://doi.org/10.1109/TIM.2020.2967161