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MACKŮ, R. KOKTAVÝ, P. SEDLÁK, P. SMULKO, J. TRAWKA, M.
Original Title
Analytical fluctuation enhanced sensing by resistive gas sensors
Type
journal article in Web of Science
Language
English
Original Abstract
Resistance fluctuations across polarised resistive gas sensors were studied in detail to evaluate sensor working conditions for detecting methane and ammonia at various concentrations. The 1/fnoise component typically dominates other noise sources up to a few kHz and can be utilised to improve gas selectivity when compared with measurements of the sensor DC resistance. The Arrhenius plot was created and the activation energy for the investigated gases was evaluated. Using this method, different ambient gases can be potentially detected only by means of a single commercial Taguchi gas sensor and 1/fnoise measurements at different temperatures of the gas sensing layer without a need of intense computations to get reliable results.
Keywords
Gas sensing Taguchi gas sensor Power spectral density 1/fnoise Activation energy
Authors
MACKŮ, R.; KOKTAVÝ, P.; SEDLÁK, P.; SMULKO, J.; TRAWKA, M.
RIV year
2015
Released
27. 3. 2015
Publisher
Elsevier
ISBN
0925-4005
Periodical
Sensors and Actuators B: Chemical
Year of study
Number
213
State
Swiss Confederation
Pages from
390
Pages to
396
Pages count
7
BibTex
@article{BUT114619, author="Robert {Macků} and Pavel {Koktavý} and Petr {Sedlák} and Janusz {Smulko} and Maciej {Trawka}", title="Analytical fluctuation enhanced sensing by resistive gas sensors", journal="Sensors and Actuators B: Chemical", year="2015", volume="2015", number="213", pages="390--396", doi="10.1016/j.snb.2015.02.114", issn="0925-4005" }