MICROELECTRODE ARRAYS WITH INTERACTING DIFFUSION LAYERS - FABRICATIONAND CHARACTERIZATION

The review deals with the fabrication and characterization of interdig itated array (IDA) microelectrodes. The close constitution of IDA caus es special effects which can be useful for analytical applications. Tr ansport phenomena of the microband IDA microelectrodes are surveyed an d the consequences of the diffusion layer overlapping, such as a high collection efficiency in comparison with RRDE and current amplificatio n by redox cycling, are discussed. A brief description of the fabricat ion of vertically separated IDA microelectrodes is given.