Chemicapacitors as a versatile platform for miniature gas and vapor sensors

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Abstract

Recent years have seen the rapid growth in the need for sensors throughout all areas of society including environmental sensing, health-care, public safety and manufacturing quality control. To meet this diverse need, sensors have to evolve from specialized and bespoke systems to miniaturized, low-power, low-cost (almost disposable) ubiquitous platforms. A technology that has been developed which gives a route to meet these challenges is the chemicapacitor sensor. To date the commercialization of these sensors has largely been restricted to humidity sensing, but in this review we examine the progress over recent years to expand this sensing technology to a wide range of gases and vapors. From sensors interrogated with laboratory instrumentation, chemicapacitor sensors have evolved into miniaturized units integrated with low power readout electronics that can selectively detect target molecules to ppm and sub-ppm levels within vapor mixtures.
Original languageEnglish
Article number022001
Number of pages23
JournalMeasurement Science and Technology
Volume28
Issue number2
Early online date19 Dec 2016
DOIs
Publication statusPublished - 1 Feb 2017

Keywords

  • miniature sensors
  • chemicapacitors
  • volatile organic chemicals (VOCs)
  • low-power
  • stand-alone sensors
  • gases
  • vapors

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