Biotechnology in the production of printed circuit boards: mycelium instead of etching

Something that is trying to get rid of in any industry - microbes, dust, mold and moisture - the Canadian scientists decided to adopt.
A drawing from a nutrient solution is applied to the board, irrigated with mushroom spores.

The matrix grows along the solution, forming 90 – nanometer tracks.
Then the mushrooms are irrigated with a solution of water mixed with metals dissolved in it.
Then the matrix is ​​dried, and the fibrous structure of the board is obtained according to a predetermined current-carrying circuit.
with smooth bends - which significantly reduces the noise from interferences between tracks.

The technology does not allow making too miniature boards, but the cost of manufacturing is 30% less than similar etching technologies.
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