Novel Sensing Approach for LPG Leakage Detection: Part I-Operating Mechanism and Preliminary Results

Anindya Nag, Asif Iqbal Zia, Xie Li, Subhas Chandra Mukhopadhyay*, Jurgen Kosel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Gas sensing technology has been among the topical research work for quite some time. This paper showcases the research done on the detection mechanism of leakage of domestic cooking gas at ambient conditions. Micro-electro mechanical systems-based interdigital sensors were fabricated on oxidized single-crystal silicon surfaces by the maskless photolithography technique. The electrochemical impedance analysis of these sensors was done to detect liquefied petroleum gas (LPG) with and without coated particles of tin oxide (SnO2) in form of a thin layer. A thin film of SnO2 was spin-coated on the sensing surface of the interdigital sensor to induce selectivity to LPG that consists of a 60/40 mixture of propane and butane, respectively. This paper reports a novel strategy for gas detection under ambient temperature and humidity conditions. The response time of the coated sensor was encouraging and own a promising potential to the development of a complete efficient gas sensing system.

Original languageEnglish
Article number7312895
Pages (from-to)996-1003
Number of pages8
JournalIEEE Sensors Journal
Volume16
Issue number4
DOIs
Publication statusPublished - 15 Feb 2016
Externally publishedYes

Keywords

  • coating
  • electrochemical impedance spectroscopy
  • Interdigital sensors
  • LPG

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