Physicists have engraved the tiniest audio recording in history on a record

(ORDO NEWS) — The new technology of nanolithography made it possible to place a 25-second stereo recording on a plate with a diameter of 40 microns.

Scientists from the Danish Technical University (DTU) recorded a 25-second piece of music on a plate with a diameter of 0.04 millimeters.

The new Nanofrazor nanolithography system made it possible to create grooves separated by a distance of only 450 nanometers, with a resolution of up to 10 nanometers.

This is described in a message distributed by the press service of the DTU.

“I’ve been doing lithography for 30 years now, and while this technology has been around for quite some time, it still feels like something out of science fiction,” said DTU professor Peter Bøggild.

To imagine the scale on which the work is going on, we can say that thanks to it you can leave your own signature on the surface of the erythrocyte.

With this resolution, we are able to create complex 3D landscapes.”

A few years ago, Böggild and his team were already demonstrating the capabilities of the Nanofrazor by capturing a microscopic image of the Mona Lisa 10,000 times smaller than the original by building a forest of vertical columns whose curvature determined the color of each section of the painting.

The finished product occupied an area measuring only 12 by 16 micrometers.

Now the scientists have made a new demonstration of their nanolithography technology by recording Brenda Lee’s classic Christmas song Rocking Around the Christmas Tree on a tiny record.

A twenty-five-second fragment of the track was placed on a disc with a diameter of only 40 micrometers.

“We even made it in stereo: the lateral fluctuations of the furrows contain the data for the left channel, and their depth for the right,” added Prof. Böggild.

True, to listen to such a stereo recording, you will need an atomic force microscope or the same Nanofrazor system that was used to create the recording.

Nanofrazor allows you to process the prepared surface with a laser beam, removing microscopic areas from it with nanometer resolution, in order to form finished structures of great complexity.

According to Böggild, the technology is fast and affordable. Scientists hope that in the future it will allow obtaining materials with unique properties.

In particular, graphene films with optoelectronic characteristics that are unusual even for this exotic material have already been created with the help of Nanofrazor.


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