Citation: Xue Ji ZHANG, Xing Yao ZHOU. INVESTIGATIONS ON NANOMETER-SIZED ULTRAMICRO-ELECTRODES(Ⅱ)-FABRICATION, CHARACTERIZATION OF CARBON FIBER CYLINDER ULTRAMICROELECTRODES[J]. Chinese Chemical Letters, ;1993, 4(11): 995-998. shu

INVESTIGATIONS ON NANOMETER-SIZED ULTRAMICRO-ELECTRODES(Ⅱ)-FABRICATION, CHARACTERIZATION OF CARBON FIBER CYLINDER ULTRAMICROELECTRODES

Department of Chemistry, Wuhan University, 430072 Wuhan

Received Date: 12 July 1993

Fund Project: This project was supported by the National Science Foundation of China and Doctoral Programme from State Education Commission Foundation of China.

Described here are the fabrication and characterization of carbon fiber cylinder ultramicroelectrodes with cylinder length of less than 100 μm, total tip diameter of several hundreds nanometers. The electrodes have been fabricated by direct etching of carbon fiber using an ion beam thinner. Optical microscopy, scanning electron microscopy (SEM), cyclic voltammetry have been employed to characterize those electrodes. The experimental results obtained indicate the electrodes can be used for in vivo detection of neurotransmitters such as dopamine, 5-hydroxytryptamine in a single cell.
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