title: Light-addressable potentiometric sensor for biochemical systems.
abstract: Numerous biochemical reactions can be measured potentiometrically through changes in pH, redox potential, or transmembrane potential. An alternating photocurrent through an electrolyte-insulator-semiconductor interface provides a highly sensitive means to measure such potential changes. A spatially selectable photoresponse permits the determination of a multiplicity of chemical events with a single semiconductor device.
authors: Molecular Devices Corporation, Palo Alto, CA 94304.
authors: D G
authors: DG
authors: Hafeman
authors: J W
authors: JW
authors: Parce
authors: H M
authors: HM
authors: McConnell
mesh_terms: D004573:Electrolytes; D006863:Hydrogen-Ion Concentration; D008027:Light; D008564:Membrane Potentials; D010084:Oxidation-Reduction; D012666:Semiconductors
chemical_list: D004573:Electrolytes