New nanoprinter will help find criminals

MIPT employees have created the world's first dry spray printer that can be used to produce various micro-sized structures. For example, plasmonic "amplifiers" of light can be printed on it, which can be used to find the smallest traces of substances when examining samples using Raman spectroscopy. This is very important for the work of criminologists, the analysis of the composition of art objects, archaeological research and other scientific experiments. The new printer has no analogues in the world.

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"The analysis of the composition of the samples is performed by Raman spectroscopy. He determines the substance by the effects of light, which can be enhanced using plasmonic structures printed by us. That is, we are, in fact, making a signal amplifier. Without it, a small amount of the substance is not visible, but with our structure it is visible," said Vladislav Borisov, a researcher at the MIPT Functional Materials Testing Center.

The device can also be used to print microelectronics boards with a track width the size of a human hair. And when creating photodetectors, the invention makes it possible to apply additional quantum dots in order to significantly increase the sensitivity of the elements.