Versatile computer-controlled system for characterization of gas sensing materials

M. Zhao, J. X. Huang, M. H. Wong, Y. M. Tang, Chung Wo Ong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)


Design of a system used for characterizing gas sensing materials is described. It is distinctive of being able to measure electrical and optical responses of a sample simultaneously, control a number of measurement parameters, perform fast exchange of gaseous environment, and be fully controlled automatically. These features make the system to be versatile in determining most concerned performance indexes of a gas sensing material (e.g., sensitivity, stability, selectivity, responserecovery times, etc.) as functions of various combinations of measurement conditions (e.g., gas concentrations, temperature, total pressure, content of interferants, photo assist, relative humidity, soaking time in a fixed gas concentration, and number of switching cycles in a dynamic test, etc.). Rationales of the designs associated with general gas sensing mechanics are discussed.
Original languageEnglish
Article number105001
JournalReview of Scientific Instruments
Issue number10
Publication statusPublished - 1 Oct 2011

ASJC Scopus subject areas

  • Instrumentation


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