Novel approach to sense oxygen in solution using short measurement times

F. van Rossem, T. Kamperman, J.G. Bomer, A. van den Berg, S. Le Gac, M. Boiani

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

We report here a novel approach for rapid sensing of oxygen in solution. Dissolved oxygen is measured using an ultramicroelectrode array (UMEA) (36 UMEs; 2μm O 20μm spacing) fabricated from Pt in an oxide-nitride-oxide insulating layer on glass. The oxygen concentration is determined in the short time measurement mode using the slope of the measured current I as a function of 1/√t (-0.4V applied), t being the measurement time (Cottrell equation). Specifically, the dissolved oxygen concentration is measured within less than 10ms in the solution. At the same time, the concentration in dissolved oxygen is monitored using an external optical sensor, for calibration purposes. A linear relationship (R2=0.96) is found between the responses of the two sensors. By implementing a conditioning step (0.1V applied for 10ms), only a 2% change is observed in the UMEA response over a 2h period. The proposed sensing approach will be very valuable to monitor in situ the respiratory activity of microtissues in nL volumes, as the amount of oxygen consumed by the sensor is dramatically decreased using short measurement times.

Original languageEnglish
Title of host publicationIEEE SENSORS 2012 - Proceedings
DOIs
Publication statusPublished - 1 Dec 2012
Event2012 IEEE Sensors - Taipei International Convention Center, Taipei, Taiwan, Province of China
Duration: 28 Oct 201231 Oct 2012

Conference

Conference2012 IEEE Sensors
CountryTaiwan, Province of China
CityTaipei
Period28/10/1231/10/12

Fingerprint

Dissolved oxygen
Time measurement
Oxygen
Oxides
Sensors
Optical sensors
Nitrides
Calibration
Glass

Keywords

  • Electrodes
  • Current measurement
  • Sensor phenomena and characterization
  • Time measurement
  • Arrays
  • Atmospheric measurements

Cite this

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title = "Novel approach to sense oxygen in solution using short measurement times",
abstract = "We report here a novel approach for rapid sensing of oxygen in solution. Dissolved oxygen is measured using an ultramicroelectrode array (UMEA) (36 UMEs; 2μm O 20μm spacing) fabricated from Pt in an oxide-nitride-oxide insulating layer on glass. The oxygen concentration is determined in the short time measurement mode using the slope of the measured current I as a function of 1/√t (-0.4V applied), t being the measurement time (Cottrell equation). Specifically, the dissolved oxygen concentration is measured within less than 10ms in the solution. At the same time, the concentration in dissolved oxygen is monitored using an external optical sensor, for calibration purposes. A linear relationship (R2=0.96) is found between the responses of the two sensors. By implementing a conditioning step (0.1V applied for 10ms), only a 2{\%} change is observed in the UMEA response over a 2h period. The proposed sensing approach will be very valuable to monitor in situ the respiratory activity of microtissues in nL volumes, as the amount of oxygen consumed by the sensor is dramatically decreased using short measurement times.",
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author = "{van Rossem}, F. and T. Kamperman and J.G. Bomer and {van den Berg}, A. and {Le Gac}, S. and M. Boiani",
year = "2012",
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van Rossem, F, Kamperman, T, Bomer, JG, van den Berg, A, Le Gac, S & Boiani, M 2012, Novel approach to sense oxygen in solution using short measurement times. in IEEE SENSORS 2012 - Proceedings., 6411115, 2012 IEEE Sensors, Taipei, Taiwan, Province of China, 28/10/12. https://doi.org/10.1109/ICSENS.2012.6411115

Novel approach to sense oxygen in solution using short measurement times. / van Rossem, F.; Kamperman, T.; Bomer, J.G.; van den Berg, A.; Le Gac, S.; Boiani, M.

IEEE SENSORS 2012 - Proceedings. 2012. 6411115.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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