Wf. Peng et Ek. Wang, THEORY OF STEADY-STATE CURRENT AT MULTIPLE MICROCYLINDER ELECTRODES COUPLED WITH A PARALLEL PLANAR ELECTRODE, Analytical chemistry, 65(20), 1993, pp. 2719-2723
A novel device of multiple cylinder microelectrodes coupled with a par
allel planar electrode was proposed. The feedback diffusion current at
this device was studied using bilinear transformation of coordinates
in the diffusion space, where lines of mass flux and equiconcentration
are represented by orthogonal circular functions. The derived express
ion for the steady-state current shows that as the gap between cylindr
ical microelectrodes and planar electrode diminishes, greatly enhanced
currents can be obtained with high signal-to-noise ratio. Other impor
tant geometrical parameters such as distance between adjacent microcyl
inders, cylinder radius, and number of microcylinders were also discus
sed in detail.