Publication result detail

Analytical fluctuation enhanced sensing by resistive gas sensors

MACKŮ, R.; KOKTAVÝ, P.; SEDLÁK, P.; SMULKO, J.; TRAWKA, M.

Original Title

Analytical fluctuation enhanced sensing by resistive gas sensors

English Title

Analytical fluctuation enhanced sensing by resistive gas sensors

Type

WoS Article

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.

English 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

Key words in English

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

2016

Released

27.03.2015

Publisher

Elsevier

ISBN

0925-4005

Periodical

SENSORS AND ACTUATORS B-CHEMICAL

Volume

2015

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"
}