title: Carbon composite microelectrodes fabricated by electrophoretic deposition.
abstract: Single-walled carbon nanotubes were deposited on one end of the etched carbon fiber electrodes by an electrophoretic method. The carbon nanotube bundles formed a dense network on the carbon fiber surface. The electrochemical properties of the composite carbon electrodes were studied in the buffered neutral solutions. The results in cyclic voltammetry's characteristic indicate that the electrons on the electrodes transfer very fast. Furthermore, the redox reactions of dopamine (DA) on the composite electrodes show good sensitivity. When the DA concentration was 0.02 mM, the peak current in differential pulse technique reached 1.33 microA after performing the background subtraction. In addition, the simultaneous detection of DA and ascorbic acid (AA) showed that the interference effect was not observed. It was suggested that the carbon composite microelectrodes have potential applications as electrochemical sensors inside a single cell.
authors: 1D Nanomaterials Research Group, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan.
authors: Jun
authors: J
authors: Ma
authors: Jie
authors: J
authors: Tang
authors: Qian
authors: Q
authors: Cheng
authors: Han
authors: H
authors: Zhang
authors: Norio
authors: N
authors: Shinya
authors: Lu-Chang
authors: LC
authors: Qin