A swelling hydrogel-based Pco2 sensor

S. Herber, Wouter Olthuis, Piet Bergveld

Research output: Contribution to journalArticleAcademicpeer-review

41 Citations (Scopus)

Abstract

This paper reports the exploration of hydrogel as sensor material for the detection of carbon dioxide (CO2). Hydrogel microspheres, which swell or shrink in response to a change in pH, were specifically prepared for this purpose and placed on a pressure sensor membrane. Subsequently, a porous metal screen was placed on top to fix the volume and position of the microspheres. The newly created sensor was placed in a sodium bicarbonate solution and CO2 was led through the solution to decrease the pH. In response, the hydrogel microspheres deswell and consequently, the measured pressure decreases. The main advantage of this sensor principle is the lack of a reference electrode as required for potentiometric sensors
Original languageUndefined
Pages (from-to)378-382
Number of pages5
JournalSensors and actuators. B: Chemical
Volume91
Issue number1-3
DOIs
Publication statusPublished - 2003

Keywords

  • IR-58766
  • METIS-213589

Cite this

Herber, S. ; Olthuis, Wouter ; Bergveld, Piet. / A swelling hydrogel-based Pco2 sensor. In: Sensors and actuators. B: Chemical. 2003 ; Vol. 91, No. 1-3. pp. 378-382.
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A swelling hydrogel-based Pco2 sensor. / Herber, S.; Olthuis, Wouter; Bergveld, Piet.

In: Sensors and actuators. B: Chemical, Vol. 91, No. 1-3, 2003, p. 378-382.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Olthuis, Wouter

AU - Bergveld, Piet

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KW - METIS-213589

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DO - 10.1016/S0925-4005(03)00121-7

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