The light-addressable potentiometric sensor for multi-ion sensing and imaging.
The light-addressable potentiometric sensor (LAPS) is a semiconductor-based chemical sensor with an electrolyte-insulator-semiconductor structure. The LAPS can have many measuring points integrated on the sensing surface, which are individually accessed by a light beam. By modifying the measuring points with different materials, a single sensor plate can be used as a multi-analyte sensor. In this paper, instrumentation and application of LAPS to multi-ion sensing and imaging are described. As a new application of LAPS, potentiometric imaging of a microfluidic channel is proposed.
Yoshinobu
T
T
The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan. nov@ecei.tohoku.ac.jp
Iwasaki
H
H
Ui
Y
Y
Furuichi
K
K
Ermolenko
Yu
Y
Mourzina
Yu
Y
Wagner
T
T
Näther
N
N
Schöning
M J
MJ
D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000032:analysis*; D008027:Light; D008094:Lithium / Q000032:analysis; D011188:Potassium / Q000032:analysis; D011199:Potentiometry; D012666:Semiconductors
D007477:Ions; D008094:Lithium; D011188:Potassium