Controlling the electrochemically active area of carbon fiber microelectrodes by the electrodeposition and selective removal of an insulating photoresist.
A new and simple method permits control of the electrochemically active area of a carbon fiber microelectrode. An electrophoretic photoresist insulates the 10-microm-diameter carbon fiber microelectrodes. Photolysis of the photoresist followed by immersion of the exposed area into a developing solution reveals electroactive carbon fiber surface. The electroactive surface area exposed can be controlled with a good degree of reproducibility.
Lambie
Bradley A
BA
Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, 603 Chevron Science Center, Pittsburgh, Pennsylvania 15260, USA.
Orwar
Owe
O
Weber
Stephen G
SG
D002244:Carbon / Q000737:chemistry*; D000077482:Carbon Fiber; D004563:Electrochemistry; D004595:Electroplating / Q000379:methods*; D005295:Ferrocyanides / Q000737:chemistry; D008027:Light; D008839:Microelectrodes; D010777:Photochemistry
D000077482:Carbon Fiber; D005295:Ferrocyanides; D002244:Carbon; C020354:hexacyanoferrate II