TY  - JOUR
AU  - Itabashi, Akinori
AU  - Kosakab, Naoki
AU  - Miyamotoa, Ko-ichiro
AU  - Wagner, Torsten
AU  - Yoshinobua, Tatsuo
AU  - Schöning, Michael J.
TI  - High-speed chemical imaging system based on front-side-illuminated LAPS
JO  - Sensors and actuators  / B
VL  - B 182
SN  - 0925-4005
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2014-00277
SP  - 315-321
PY  - 2013
AB  - The chemical imaging sensor is a semiconductor-based chemical sensor that can visualize the spatial
AB  - distribution of specific ions on the sensing surface. The conventional chemical imaging system based on
AB  - the light-addressable potentiometric sensor (LAPS), however, required a long time to obtain a chemical
AB  - image, due to the slow mechanical scan of a single light beam. For high-speed imaging, a plurality
AB  - of light beams modulated at different frequencies can be employed to measure the ion concentrations
AB  - simultaneously at different locations on the sensor plate by frequency division multiplex (FDM). However,
AB  - the conventional measurement geometry of back-side illumination limited the bandwidth of the
AB  - modulation frequency required for FDM measurement, because of the low-pass filtering characteristics
AB  - of carrier diffusion in the Si substrate. In this study, a high-speed chemical imaging system based on
AB  - front-side-illuminated LAPS was developed, which achieved high-speed spatiotemporal recording of pH
AB  - change at a rate of 70 frames per second.
AB  - © 2013 Elsevier B.V. All rights reserved.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000319488800043
DO  - DOI:10.1016/j.snb.2013.03.016
UR  - https://juser.fz-juelich.de/record/150198
ER  -