Coffee stains inspire optimal printing technique for electronics

Coffeestains

What can’t coffee inspire though? Coffee dries faster at the edges causing the notorious rings. Finding a way to avoid this process has led to new inks for electronics!

Via TechXplore:

Now, after studying this process for years, a team of researchers have created a new family of inks that overcomes this problem, enabling the fabrication of new electronics such as sensors, light detectors, batteries and solar cells.

Their solution: alcohol, specifically a mixture of isopropyl alcohol and 2-butanol. Using these, ink particles tend to distribute evenly across the droplet, generating shapes with uniform thickness and properties. Their results are reported in the journal Science Advances.

Read more!


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