A microsensor array with porous tin oxide thin films and microhotplate dangled by wires in air

Dae Sik Lee, Chang Hyun Shim, Jun Woo Lim, Jeung Soo Huh, Duk Dong Lee, Youn Tae Kim

Research output: Contribution to journalConference articlepeer-review

19 Scopus citations

Abstract

A microsensor array with the highly sensitive porous tin oxide thin films employing the noble metal catalysts of Pt and Au on a new microhotplate, dangled in air by Pt bonding wires, has been designed and fabricated. The microhot plate was made of N/O/N Si diaphragm with area of 1.9 mm × 2.1 mm. Power consumption was reduced by decreasing the thickness of substrate. The sensor array was applied to recognizing the explosive gases within the range of threshold limit values (TLVs), employing principal component analysis. The result showed that the micro sensor array was qualified for classifying obviously the kinds and quantities of the explosive gases.

Original languageEnglish
Pages (from-to)250-255
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume83
Issue number1-3
DOIs
StatePublished - 15 Mar 2002
EventSelected papers from Transduckers '01 Eurosensors XV (Transduckers 2001) - Munich, Germany
Duration: 10 Jun 200114 Jun 2001

Keywords

  • Explosive gases
  • Microgas sensor
  • Microhotplate
  • Tin oxide

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