TY - GEN
T1 - Semiconductor-based sensors for imaging of chemical processes
AU - Werner, C. Frederik
AU - Yoshinobu, Tatsuo
AU - Miyamoto, Ko Ichiro
AU - Schöning, Michael J.
AU - Wagner, Torsten
N1 - Funding Information:
This work was partially financially supported by the Federal Ministry of Education and Research (BMBF-Nachwuchswettbewerb - NanoMatFutur, project Opto-Switch 13N12585).
Publisher Copyright:
© VDE VERLAG GMBH - Berlin - Offenbach.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:85091413399
T3 - Sensoren und Messsysteme 2014 - 17. ITG/GMA-Fachtagung
BT - Sensoren und Messsysteme 2014 - 17. ITG/GMA-Fachtagung
PB - VDE Verlag GmbH
T2 - 17. ITG/GMA-Fachtagung Sensoren und Messsysteme 2014 - 17th ITG/GMA Conference on Sensors and Measuring Systems 2014
Y2 - 3 June 2014 through 4 June 2014
ER -