Optical detection of radio waves – published in Nature

Thursday 06 Mar 14


Silvan Schmid
Associate Professor
DTU Nanotech
+4545 25 57 45

Researchers at DTU Nanotech publish article in Nature.

A new method for ultrasensitive detection of radio signals has been developed by researchers at DTU Nanotech and Copenhagen University. Radio waves are detected via a mechanical membrane that is a part of an electric capacitor. Radio waves move charges in the capacitor which causes the membrane to deflect. This movement is measured with laser light reflecting off the membrane by interfering with itself. The membrane adds only very little noise which allows the detection of very weak radio signals.

The new technique can be useful within a number of areas e.g. radio astronomy, medical imaging, navigation and communication.

Read the full research article.

Source of information: Nature.

Read more about the Nanoprobes research group.

Read more in Danish: dtu.dk