Recent developments of chemical imaging sensor systems based on the principle of the light-addressable potentiometric sensor

Tatsuo Yoshinobu, Ko Ichiro Miyamoto, Torsten Wagner, Michael J. Schöning

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

The light-addressable potentiometric sensor (LAPS) is an electrochemical sensor with a field-effect structure to detect the variation of the Nernst potential at its sensor surface, the measured area on which is defined by illumination. Thanks to this light-addressability, the LAPS can be applied to chemical imaging sensor systems, which can visualize the two-dimensional distribution of a particular target ion on the sensor surface. Chemical imaging sensor systems are expected to be useful for analysis of reaction and diffusion in various electrochemical and biological samples. Recent developments of LAPS-based chemical imaging sensor systems, in terms of the spatial resolution, measurement speed, image quality, miniaturization and integration with microfluidic devices, are summarized and discussed.

Original languageEnglish
Pages (from-to)926-932
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume207
Issue numberPB
DOIs
Publication statusPublished - 2015 Feb

Keywords

  • Chemical imaging sensor
  • Chemical sensor
  • Field effect
  • LAPS
  • Light-addressable potentiometric sensor
  • Semiconductor

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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