Semiconductor-based sensors for imaging of chemical processes

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To study chemical and biological processes, the spatially resolved determination of concentrations of one or more analyte species is of distinct interest. With a light-addressable potentiometric sensor (LAPS) chemical images can be created, which illustrate the concentration distribution on the sensor chip. LAPS belongs to the family of semiconductor-based potentiometric (bio-)chemical sensors. With the help of a modulated and focused light source, a photocurrent is generated that depends on the local concentration on the sensor surface. By scanning the light source along the sensor plane the concentration distribution can be determined. In this study, different LAPS set-ups are presented and compared. A scanning LAPS with a single laser diode moved by piezoelectric motors, a digital mirror device (DMD)-based LAPS utilising a video projector, and an organic light-emitting diode (OLED)-based LAPS.

Original languageEnglish
Title of host publicationSensoren und Messsysteme 2014 - 17. ITG/GMA-Fachtagung
PublisherVDE Verlag GmbH
ISBN (Electronic)9783800736225
Publication statusPublished - 2013
Event17. ITG/GMA-Fachtagung Sensoren und Messsysteme 2014 - 17th ITG/GMA Conference on Sensors and Measuring Systems 2014 - Nurnberg, Germany
Duration: 2014 Jun 32014 Jun 4

Publication series

NameSensoren und Messsysteme 2014 - 17. ITG/GMA-Fachtagung

Conference

Conference17. ITG/GMA-Fachtagung Sensoren und Messsysteme 2014 - 17th ITG/GMA Conference on Sensors and Measuring Systems 2014
CountryGermany
CityNurnberg
Period14/6/314/6/4

ASJC Scopus subject areas

  • Information Systems
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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