A dynamically configurable electrode includes a first planar electrode and a planar array of pixels in a different plane, wherein a polarizable liquid medium (including electrolyte solutions) is to reside in the gap between electrodes. The pixels are individually addressable by a time-varying voltage,...http://www.google.co.uk/patents/US7604718?utm_source=gb-gplus-sharePatent US7604718 - Dynamically configurable electrode formed of pixels
