Development of a handheld 16 channel pen-type LAPS for electrochemical sensing

M. J. Schöning, T. Wagner, C. Wang, R. Otto, T. Yoshinobu

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)


The light-addressable potentiometric sensor (LAPS) is a field effect-based sensor, which allows due to its simple structure a wide range of possible applications. The aim of this work is the design of a portable miniaturised 16-channel LAPS with a signal processing unit, which reduces the measurement set-up to a minimum. The whole device has been created as a capsulated unit, which could be used as normal as a standard measurement equipment. A LabVIEW-based program allows an easy and comfortable measurement procedure. Hard- and software have been optimised with respect to the signal-to-noise ratio, stability, sensitivity and easy handling.

Original languageEnglish
Pages (from-to)808-814
Number of pages7
JournalSensors and Actuators, B: Chemical
Issue number1-2 SPEC. ISS.
Publication statusPublished - 2005 Jul 22
Externally publishedYes


  • Handheld device
  • LAPS
  • Light-addressable potentiometric sensor
  • Miniaturisation
  • 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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