Methods and devices for pumping fluid are disclosed herein. In one exemplary embodiment, a pump is provided having a first member with a passageway formed therethrough, and a plurality of electrically expandable actuators in communication with the first member and adapted to change shape upon the application...http://www.google.co.uk/patents/US20070025868?utm_source=gb-gplus-sharePatent US20070025868 - ELECTROACTIVE POLYMER-BASED PUMP
