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Researchers

  • Michael Freund
  • Sharmistha Bhadra
  • Gregory Bridges
  • Douglas Thomson

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Details

Project TitlePrinted pH Gas Sensor
Track Code80.02.0814
Short Description

Near-field passive volatile detection sensor

Abstract

Researchers at the University of Manitoba have developed a near-field passive sensor capable of detecting acidic and basic volatiles in the surrounding environment. The sensor is a LC resonant circuit consisting of a spiral inductor connected in parallel with a voltage dependent capacitor (varactor). The volatile detector, comprised of a hydrogel coated pair of pH-sensitive electrodes is connected in parallel with the varactor. The hydrogel is used as an absorptive medium for the volatiles and acts to contain the electrolyte. Due to the absorption of the acidic and basic volatiles, the hydrogel pH changes which in turn changes the voltage across the pH-sensitive electrode pair shifting the resonant frequency of the sensor. An interrogator coil is inductively coupled to the sensor inductor and remotely tracks the resonant frequency of the sensor.

 
Tagsfood science, chemistry, environmental
 
Posted DateMay 4, 2016 11:36 AM

Researcher

Name
Michael Freund
Sharmistha Bhadra
Gregory Bridges
Douglas Thomson

Manager

Name
Robert Werbowesky

One page summary

Inquiries

Robert Werbowsky

Technology Manager

Ph: +1(204)474.7865

Email: robert.werbowesky@umanitoba.ca

Files

File Name Description
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Technology Transfer Office
631 Drake Centre, 181 Freedman Crescent,
University of Manitoba, Winnipeg, MB R3T 5V4 Canada
Office: 204.474.6200  Fax: 204.261-3475
tto@umanitoba.ca