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  • Title: Light-addressable potentiometric sensor for biochemical systems.
    Author: Hafeman DG, Parce JW, McConnell HM.
    Journal: Science; 1988 May 27; 240(4856):1182-5. PubMed ID: 3375810.
    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.
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