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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

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