Means for cooling a heated surface comprising an enclosure for enclosing the
heated surface and two interleaved radial arrays of micro electrodes positioned
on the surface within the enclosure thereby forming an interleaved radial array.
The radial array has a near-vertex end and a periphery. The micro
electrodes at the near-vertex end have a smaller interelectrode distance and the
micro electrodes at the periphery have a larger interelectrode distance. A volatile
cooling liquid is contained within the enclosure and moved from the near-vertex
array end toward the periphery along the lengths of micro electrodes by non-alternating
voltages applied to the micro electrodes, thereby creating a polarization effect
and evaporation of the volatile liquid.