Microelectrode electrochemistry with semiconducting microelectrode chips.

Well-defined semiconducting microelectrodes on silicon chips are prepared for new insights into microelectrode electrochemistry. Unique voltammetric features are observed due to a combined effect of enhanced mass transport from microelectrodes and rectifying nature of the semiconductor-electrolyte interface. The "diffusional independence" of single elements in certain arrays is also carefully studied.

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