Investigations on Nanometer-sized Ultramicroelectrodes (Ⅳ) ─Fabrication, Characterization of Gold Cylinder Ultramicroelectrodes

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (12): 1772.

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Investigations on Nanometer-sized Ultramicroelectrodes (Ⅳ) ─Fabrication, Characterization of Gold Cylinder Ultramicroelectrodes

ZHANG Xue-Ji, WAN Qi-Jin, ZHANG Wu-Ming, ZHOU Xing-Yao

Department of Chemistry, Wuhan University, Wuhan, 430072

Received:1993-12-02 Revised:1994-04-14 Online:1994-12-24 Published:1994-12-24

Abstract

Abstract: Anovel method is described for construction of nanometer-sized gold ultramicroelectrodes using gold fiber etched by ion beam. The electrodes with tip as small as 30 nanometer have been fabricated and characterized by cyclic voltammetry, scanning electron microscopy and chronoamperommetry. The results have shown that fabrication of the electrodes is successful. Moreover, the electrodes can be constructed in a desired size regime. The experiments suggest that the electrodes can be applied in scanning tunelling microscopy electrochemistry, for microvoltammetry in a ultramicroenvironment such as membrane hole with diameter as small as 10μm.

Key words: Microelectrode, Nanometer-sized ultramicroelectrode, Voltammetry, Ion beam, Gold fiber

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ZHANG Xue-Ji, WAN Qi-Jin, ZHANG Wu-Ming, ZHOU Xing-Yao. Investigations on Nanometer-sized Ultramicroelectrodes (Ⅳ) ─Fabrication, Characterization of Gold Cylinder Ultramicroelectrodes[J]. Chem. J. Chinese Universities, 1994, 15(12): 1772.

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Investigations on Nanometer-sized Ultramicroelectrodes (Ⅳ) ─Fabrication, Characterization of Gold Cylinder Ultramicroelectrodes

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