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A microelectrode array microprobe with a choline sensing site and an on‐probe reference electrode was constructed by depositing permselective polymer films and choline oxidase (ChOx) on one microelectrode, and iridium oxide (IrOx) on another, both of which were coated previously with a nanostructured Pt deposit. Scanning electron microscopy (SEM) of the nanostructured Pt layer revealed a unique pillar‐like,...
High‐performance biosensors were fabricated by efficiently transferring enzyme onto Pt electrode surfaces using a polydimethylsiloxane (PDMS) stamp. Polypyrrole and Nafion were coated first on the electrode surface to act as permselective films for exclusion of both anionic and cationic electrooxidizable interfering compounds. A chitosan film then was electrochemically deposited to serve as an adhesive...
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