Abstract: The interdigitated array(IDA)microband electrode,which was made of 50 couples Au microelectrodes with 8 μm wide,4 μm gap and 500 μm long,was fabricated by using a photolithographic technique.The surface of IDAwas revealed with scan electron microscopy(SEM).The voltammetric characteristics of the IDAwas studied by means of cyclic voltammetry and chronoamperometry with four electrode configuration for generator collection mode and three electrode configuration for opened collector mode.Current-time curves for IDA in ferrocene dimethyl sulphoxide solution were subject to a quantitative comparison with the diffusion theory of microband electrode.The deviation between the theoretical and the experimental curves was discussed.The shielding factor, feed back factor and collection efficiency of IDA were determined.

Key words: Microelectrode array, Interdigitated array microband electrode, Microvoltammetry, Collection efficiency