Constant-phase-mode operation of the light-addressable potentiometric sensor

Ko Ichiro Miyamoto, Torsten Wagner, Shuhei Mimura, Shinichiro Kanoh, Tatsuo Yoshinobu, Michael J. Schöning

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The constant-phase-mode operation of the light-addressable potentiometric sensor (LAPS) is proposed and demonstrated. In this new operation mode, the temporal change and the spatial distribution of the analyte concentration are recorded in the form of the bias voltage applied to the LAPS sensor plate, which is servo-controlled to maintain the phase of the photocurrent at a constant value with respect to the light modulation. The constant-phase-mode LAPS is advantageous for its wider measurement range and reduction of artifacts.

Original languageEnglish
Pages (from-to)119-123
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume154
Issue number2
DOIs
Publication statusPublished - 2011 Jun 20
Externally publishedYes

Fingerprint

Potentiometric sensors
sensors
Light modulation
Laser modes
Bias voltage
Photocurrents
Spatial distribution
light modulation
rangefinding
photocurrents
artifacts
spatial distribution
Sensors
electric potential

Keywords

  • Chemical imaging sensor
  • LAPS
  • Light-addressable potentiometric sensor

ASJC Scopus subject areas

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

Cite this

Constant-phase-mode operation of the light-addressable potentiometric sensor. / Miyamoto, Ko Ichiro; Wagner, Torsten; Mimura, Shuhei; Kanoh, Shinichiro; Yoshinobu, Tatsuo; Schöning, Michael J.

In: Sensors and Actuators, B: Chemical, Vol. 154, No. 2, 20.06.2011, p. 119-123.

Research output: Contribution to journalArticle

Miyamoto, Ko Ichiro ; Wagner, Torsten ; Mimura, Shuhei ; Kanoh, Shinichiro ; Yoshinobu, Tatsuo ; Schöning, Michael J. / Constant-phase-mode operation of the light-addressable potentiometric sensor. In: Sensors and Actuators, B: Chemical. 2011 ; Vol. 154, No. 2. pp. 119-123.
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