Abstract: Expressions for diffusion limiting currents at a microband electrode paired with a planar electrode of conventional size and with another microband electrode are derived analytically by conformal mapping. It is shown that the diffusion limiting currents depend on the microband electrode width L and the interelectrode gap width d, and they can be expressed as the ratio of the two complete elliptic functions K((square root(1-k~2)~(1/2))) and K(k), where k=(1+2L/d)~(-1) for band electrode pairs and k=(1+L/d)~(-1/2) for the band electrode near a planar electrode of conventional size.

Key words: Band-band electrode, Band-plane electrode, Stendy-state diffusion limiting current