Constant-phase-mode operation of the light-addressable potentiometric sensor

Ko ichiro Miyamoto, Torsten Wagner, Shuhei Mimura, Shinichiro Kanoh, Tatsuo Yoshinobu, Michael J. Schöning

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We herein propose and demonstrate the constant-phase-mode operation of the light-addressable potentiometric sensor (LAPS). The bias voltage applied to the LAPS sensor plate is servo-controlled to maintain the phase of the photocurrent with respect to the light modulation at a constant value. In this new operation mode, the temporal change and the spatial distribution of the potential at the sensing surface can be recorded and converted into the analyte concentration. This LAPS with a constant-phasemode is advantageous due to its wider measurement range and reduction of artifacts.

Original languageEnglish
Title of host publicationProcedia Chemistry
Pages1487-1490
Number of pages4
Volume1
Edition1
DOIs
Publication statusPublished - 2009 Sep
Externally publishedYes
EventEurosensors 23rd Conference - Lausanne, Switzerland
Duration: 2009 Sep 62009 Sep 9

Other

OtherEurosensors 23rd Conference
CountrySwitzerland
CityLausanne
Period09/9/609/9/9

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Keywords

  • chemical imaging sensor
  • LAPS
  • light-addressable potentiometric sensor

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Miyamoto, K. I., Wagner, T., Mimura, S., Kanoh, S., Yoshinobu, T., & Schöning, M. J. (2009). Constant-phase-mode operation of the light-addressable potentiometric sensor. In Procedia Chemistry (1 ed., Vol. 1, pp. 1487-1490) https://doi.org/10.1016/j.proche.2009.07.371