title: The light-addressable potentiometric sensor for multi-ion sensing and imaging.
abstract: 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.
authors.affiliation: The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan. nov@ecei.tohoku.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Yoshinobu
authors.forename: H
authors.initials: H
authors.lastname: Iwasaki
authors.forename: Y
authors.initials: Y
authors.lastname: Ui
authors.forename: K
authors.initials: K
authors.lastname: Furuichi
authors.forename: Yu
authors.initials: Y
authors.lastname: Ermolenko
authors.forename: Yu
authors.initials: Y
authors.lastname: Mourzina
authors.forename: T
authors.initials: T
authors.lastname: Wagner
authors.forename: N
authors.initials: N
authors.lastname: Näther
authors.forename: M J
authors.initials: MJ
authors.lastname: Schöning
mesh_terms: 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
chemical_list: D007477:Ions; D008094:Lithium; D011188:Potassium