The light-addressable potentiometric sensor for multi-ion sensing and imaging

T. Yoshinobu, H. Iwasaki, Y. Ui, K. Furuichi, Yu Ermolenko, Yu Mourzina, T. Wagner, N. Näther, M. J. Schöning

Research output: Contribution to journalArticlepeer-review

131 Citations (Scopus)


The light-addressable potentiometric sensor (LAPS) is a semiconductor-based chemical sensor with an electrolyte-insulator-semiconductor structure. The LAPS can have many measuring points integrated on the sensing surface, which are individually accessed by a light beam. By modifying the measuring points with different materials, a single sensor plate can be used as a multi-analyte sensor. In this paper, instrumentation and application of LAPS to multi-ion sensing and imaging are described. As a new application of LAPS, potentiometric imaging of a microfluidic channel is proposed.

Original languageEnglish
Pages (from-to)94-102
Number of pages9
Issue number1
Publication statusPublished - 2005 Sept


  • Chemical imaging sensor
  • Chemical sensor
  • Light-addressable potentiometric sensor
  • Microfluidic device
  • Semi conductor

ASJC Scopus subject areas

  • Molecular Biology
  • Biochemistry, Genetics and Molecular Biology(all)


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