A Miniaturized Carbon Dioxide Gas Sensor Based on Sensing of pH-Sensitive Hydrogel Swelling with a Pressure Sensor

Research output: Contribution to journalArticleAcademicpeer-review

46 Citations (Scopus)

Abstract

A measurement concept has been realized for the detection of carbon dioxide, where the CO2 induced pressure generation by an enclosed pH-sensitive hydrogel is measured with a micro pressure sensor. The application of the sensor is the quantification of the partial pressure of CO2 (Pco2) in the stomach as diagnosis for gastrointestinal ischemia. The principle is put to the proof by examining the sensor response to changes in Pco2. Furthermore, the response time, temperature-sensitivity and resolution are determined. The sensor responds well to changes in Pco2 with a maximum pressure generation of 0.29× 105 Pa at 20 kPa CO2. The 90% response time varies between 1.5 and 4.5 minutes at 37∘C. The sensor shows a linear temperature-sensitivity which can easily be compensated for, and enables detection of Pco2 changes as small as 0.5 kPa CO2.
Original languageEnglish
Pages (from-to)197-204
Number of pages8
JournalBiomedical microdevices
Volume7
Issue number3
DOIs
Publication statusPublished - 14 Aug 2005

Fingerprint

Hydrogel
Pressure sensors
Chemical sensors
Hydrogels
Carbon Dioxide
Swelling
Carbon dioxide
Gases
Pressure
Sensors
Reaction Time
Temperature
Partial Pressure
Partial pressure
Stomach
Ischemia

Keywords

  • CO2
  • Pco2
  • Carbon dioxide
  • Hydrogel
  • pH-sensitive
  • Pressure
  • Sensor

Cite this

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title = "A Miniaturized Carbon Dioxide Gas Sensor Based on Sensing of pH-Sensitive Hydrogel Swelling with a Pressure Sensor",
abstract = "A measurement concept has been realized for the detection of carbon dioxide, where the CO2 induced pressure generation by an enclosed pH-sensitive hydrogel is measured with a micro pressure sensor. The application of the sensor is the quantification of the partial pressure of CO2 (Pco2) in the stomach as diagnosis for gastrointestinal ischemia. The principle is put to the proof by examining the sensor response to changes in Pco2. Furthermore, the response time, temperature-sensitivity and resolution are determined. The sensor responds well to changes in Pco2 with a maximum pressure generation of 0.29× 105 Pa at 20 kPa CO2. The 90{\%} response time varies between 1.5 and 4.5 minutes at 37∘C. The sensor shows a linear temperature-sensitivity which can easily be compensated for, and enables detection of Pco2 changes as small as 0.5 kPa CO2.",
keywords = "CO2, Pco2, Carbon dioxide, Hydrogel, pH-sensitive, Pressure, Sensor",
author = "S. Herber and Bomer, {Johan G.} and Wouter Olthuis and Piet Bergveld and {van den Berg}, Albert",
note = "The Dutch technology foundation STW is kindly thanked for financial support (project number TTF.5439).",
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A Miniaturized Carbon Dioxide Gas Sensor Based on Sensing of pH-Sensitive Hydrogel Swelling with a Pressure Sensor. / Herber, S.; Bomer, Johan G.; Olthuis, Wouter; Bergveld, Piet; van den Berg, Albert.

In: Biomedical microdevices, Vol. 7, No. 3, 14.08.2005, p. 197-204.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - A Miniaturized Carbon Dioxide Gas Sensor Based on Sensing of pH-Sensitive Hydrogel Swelling with a Pressure Sensor

AU - Herber, S.

AU - Bomer, Johan G.

AU - Olthuis, Wouter

AU - Bergveld, Piet

AU - van den Berg, Albert

N1 - The Dutch technology foundation STW is kindly thanked for financial support (project number TTF.5439).

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AB - A measurement concept has been realized for the detection of carbon dioxide, where the CO2 induced pressure generation by an enclosed pH-sensitive hydrogel is measured with a micro pressure sensor. The application of the sensor is the quantification of the partial pressure of CO2 (Pco2) in the stomach as diagnosis for gastrointestinal ischemia. The principle is put to the proof by examining the sensor response to changes in Pco2. Furthermore, the response time, temperature-sensitivity and resolution are determined. The sensor responds well to changes in Pco2 with a maximum pressure generation of 0.29× 105 Pa at 20 kPa CO2. The 90% response time varies between 1.5 and 4.5 minutes at 37∘C. The sensor shows a linear temperature-sensitivity which can easily be compensated for, and enables detection of Pco2 changes as small as 0.5 kPa CO2.

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KW - Pco2

KW - Carbon dioxide

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KW - pH-sensitive

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