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.
Original language | English |
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Pages (from-to) | 118-122 |
Number of pages | 5 |
Journal | Sensors and Actuators, B: Chemical |
Volume | 175 |
DOIs | |
Publication status | Published - 2012 Dec |
Keywords
- Chemical imaging
- Chemical sensor
- Light-addressable potentiometric sensor (LAPS)
- OLED display
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry