Different sensing mechanisms in single wire and mat carbon nanotubes chemical sensors

P. L. Neumann, V. I. Obreczán, G. Dobrik, K. Kertész, E. Horváth, I. E. Lukács, L. Bíró, Z. Horváth

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Chemical sensing properties of single wire and mat form sensor structures fabricated from the same carbon nanotubes (CNT) materials have been compared. Sensing properties of CNT sensors were evaluated upon electrical response in the presence of five vapours as acetone, acetic acid, ethanol, toluene, and water. Diverse behaviour of single wire CNT sensors was found, while the mat structures showed similar response for all the applied vapours. This indicates that the sensing mechanism of random CNT networks cannot be interpreted as a simple summation of the constituting individual CNT effects, but is associated with another robust phenomenon, localized presumably at CNT–CNT junctions, must be supposed.

Original languageEnglish
Pages (from-to)2107-2113
Number of pages7
JournalApplied Physics A: Materials Science and Processing
Volume117
Issue number4
DOIs
Publication statusPublished - Nov 18 2014

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Carbon Nanotubes
Chemical sensors
Carbon nanotubes
carbon nanotubes
wire
Wire
sensors
Sensors
Vapors
vapors
Toluene
Acetone
acetic acid
Acetic acid
Acetic Acid
acetone
toluene
Ethanol
ethyl alcohol
Water

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)

Cite this

Different sensing mechanisms in single wire and mat carbon nanotubes chemical sensors. / Neumann, P. L.; Obreczán, V. I.; Dobrik, G.; Kertész, K.; Horváth, E.; Lukács, I. E.; Bíró, L.; Horváth, Z.

In: Applied Physics A: Materials Science and Processing, Vol. 117, No. 4, 18.11.2014, p. 2107-2113.

Research output: Contribution to journalArticle

Neumann, P. L. ; Obreczán, V. I. ; Dobrik, G. ; Kertész, K. ; Horváth, E. ; Lukács, I. E. ; Bíró, L. ; Horváth, Z. / Different sensing mechanisms in single wire and mat carbon nanotubes chemical sensors. In: Applied Physics A: Materials Science and Processing. 2014 ; Vol. 117, No. 4. pp. 2107-2113.
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