Miniaturized chemical imaging sensor system using an OLED display panel

Ko Ichiro Miyamoto, Kazumi Kaneko, Akira Matsuo, Torsten Wagner, Shin'Ichiro Kanoh, Michael J. Schöning, Tatsuo Yoshinobu

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


The chemical imaging sensor is a semiconductor-based chemical sensor that can visualize the two-dimensional distribution of specific ions or molecules in the solution. In this study, we developed a miniaturized chemical imaging sensor system with an OLED display panel as a light source that scans the sensor plate. In the proposed configuration, the display panel is placed directly below the sensor plate and illuminates the back surface. The measured area defined by illumination can be arbitrarily customized to fit the size and the shape of the sample to be measured. The waveform of the generated photocurrent, the current-voltage characteristics and the pH sensitivity were investigated and pH imaging with this miniaturized system was demonstrated.

Original languageEnglish
Pages (from-to)82-87
Number of pages6
JournalSensors and Actuators B: Chemical
Publication statusPublished - 2012 Jul 31


  • Chemical imaging sensor
  • LAPS
  • Light-addressable potentiometric sensor
  • Organic light-emitting diode display


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