Novel array-type gas sensors using conducting polymers, and their performance for gas identification

Yoshiaki Sakurai, Ho Sup Jung, Toshinori Shimanouchi, Takao Inoguchi, Seiichi Morita, Ryoich Kuboi, Kazuki Natsukawa

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Novel gas sensor devices have been developed using polythiophene (pTh) film and poly(3-n-dodecylthiophene) (pDpTh) film coated over pTh film. These polymer films were electrochemically deposited and doped by cyclic voltammetry on thin-film electrodes where the isolation gap was formed by a micromachining process. We examined the response characteristics of the conducting polymer films against various sample gases over a range of temperatures of the sensitive layer. The resistance changes of both sensitive layers of pTh and pDpTh were highly dependent on the kind of layer. In particular, pTh film responded to ammonia gas and pDpTh films clearly responded to hydrophobic gases, such as chloroform, methane and ethanol. The response of these films to several gases was analyzed with a pattern recognition (PARC) algorithm. It was found that our simple gas sensor device could discriminate between the gases that were used here.

Original languageEnglish
Pages (from-to)270-275
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume83
Issue number1-3
DOIs
Publication statusPublished - Mar 15 2002
Externally publishedYes

Fingerprint

Conducting polymers
conducting polymers
Chemical sensors
Gases
sensors
gases
Polymers
Polymer films
Methane
Micromachining
Chloroform
Chlorine compounds
Ammonia
Cyclic voltammetry
Pattern recognition
Ethanol
micromachining
chloroform
pattern recognition
ammonia

Keywords

  • Gas sensor
  • Hydrophobic effect
  • Pattern recognition algorithm
  • Polythiophene and poly(3-n-dodecylthiphene)
  • Swelling

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

Novel array-type gas sensors using conducting polymers, and their performance for gas identification. / Sakurai, Yoshiaki; Jung, Ho Sup; Shimanouchi, Toshinori; Inoguchi, Takao; Morita, Seiichi; Kuboi, Ryoich; Natsukawa, Kazuki.

In: Sensors and Actuators, B: Chemical, Vol. 83, No. 1-3, 15.03.2002, p. 270-275.

Research output: Contribution to journalArticle

Sakurai, Yoshiaki ; Jung, Ho Sup ; Shimanouchi, Toshinori ; Inoguchi, Takao ; Morita, Seiichi ; Kuboi, Ryoich ; Natsukawa, Kazuki. / Novel array-type gas sensors using conducting polymers, and their performance for gas identification. In: Sensors and Actuators, B: Chemical. 2002 ; Vol. 83, No. 1-3. pp. 270-275.
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