"LAPS Card"-A novel chip card-based light-addressable potentiometric sensor (LAPS)

T. Wagner, C. Rao, J. P. Kloock, T. Yoshinobu, R. Otto, M. Keusgen, M. J. Schöning

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


A novel design of a light-addressable potentiometric sensor (LAPS) for the realisation of an easy exchangeable and modular measurement set-up is presented in this work. The sensor chip for up to 16 independent sensor spots is integrated in a standard plastic card and the appropriate measurement cell allows a selection of different chip cards within seconds. The measurement cell contains an integrated electronic to control the measurement procedure and to read out the measurement signal from the LAPS-chip card to provide a stable signal for further data acquisition. This guarantees a high flexibility due to the use of different chip cards with the same measurement device on the one hand, and a high statistical prediction, because of the repeatable measurements with different sensor-chip cards of the same series under exact the same environmental conditions, on the other hand. Both the design and first measurements with this "LAPS cards" will be presented.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalSensors and Actuators, B: Chemical
Issue number1-2
Publication statusPublished - 2006 Oct 25


  • LAPS card
  • Light-addressable potentiometric sensor
  • Sensor array

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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