An electrokinetic pump for pumping a liquid includes a pumping body having a plurality of narrow, short and straight pore apertures for channeling the liquid through the body. A pair of electrodes for applying a voltage differential are formed on opposing surfaces of the pumping body at opposite ends...http://www.google.es/patents/US7449122?utm_source=gb-gplus-sharePatente US7449122 - Micro-fabricated electrokinetic pump
