| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 740555 | Sensors and Actuators B: Chemical | 2012 | 5 Pages |
Abstract
Light-addressable potentiometric sensors (LAPS) are field-effect-based sensors. A modulated light source is used to define the particular measurement spot to perform spatially resolved measurements of chemical species and to generate chemical images. In this work, an organic-LED (OLED) display has been chosen as a light source. This allows high measurement resolution and miniaturisation of the system. A new developed driving method for the OLED display optimised for LAPS-based measurements is demonstrated. The new method enables to define modulation frequencies between 1 kHz and 16 kHz and hence, reduces the measurement time of a chemical image by a factor of 40 compared to the traditional addressing of an OLED display.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Carl Frederik Werner, Torsten Wagner, Ko-ichiro Miyamoto, Tatsuo Yoshinobu, Michael J. Schöning,