Optical Detection of Radio Waves (image) Joint Quantum Institute Share Print E-Mail Caption In this artist's impression of the device, radio waves (green) arrive and are sent to the membrane (center) via gold wires. This induces charge oscillations on the 4-segment electrode right underneath (~1 µm distance) the membrane. Electric forces thus make the membrane move. This motion is detected with a laser beam (red), with an extreme accuracy (1 femtometer per second measurement time), translating to a very high sensitivity to radio waves. Credit Niels Bohr Institute Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.