A diode is an object that conducts electric current in only one direction. Powering a diode with an alternating current (AC) electric field causes the diode in this video to pump water over its surface, propelling it back and forth on the water surface. Modifying the AC field causes the diode to change direction.
Reporters and Editors
Reporters may freely use this video. Credit format: Video courtesy of Rachita Sharma and Orlin D. Velev (2011).
Remote Steering of Self-Propelling Diode