Light-addressable potentiometric sensor for biochemical systems.
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.
Hafeman
D G
DG
Molecular Devices Corporation, Palo Alto, CA 94304.
Parce
J W
JW
McConnell
H M
HM
D004573:Electrolytes; D006863:Hydrogen-Ion Concentration; D008027:Light; D008564:Membrane Potentials; D010084:Oxidation-Reduction; D012666:Semiconductors
D004573:Electrolytes