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Keyboard printing on paper

08.09.2020

Scientists at Purdue University in the US have developed a simple printing process that turns paper sheets from a notebook into a keyboard, music player interface, and can also make food packaging interactive.

The new method makes paper water-repellent by coating it with highly fluorinated molecules. Oil and dust are also not afraid of paper. This omniphobic coating allows multiple layers of circuitry to be printed on paper. In this case, the ink is not smeared between layers.

In addition, the paper electronic device is self-powered. It does not require any external batteries, as they receive energy from contact with the user.

The technology is compatible with traditional large-scale printing processes, so it's quick and easy to turn ordinary cardboard or paper into smart packaging or smart interface. The authors of the work hope that such "smart" paper can be used for food packaging or parcels: it can be used to check whether food is safe to eat, it can be used to sign a parcel by simply swiping a finger over the box.

Also, simple notebook sheets can be converted into music player interfaces so that users can select songs, play them, and adjust the volume.

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