Physicists undo the ‘coffee ring effect’ (w/ video)

A team of University of Pennsylvania physicists has shown how to disrupt the “coffee ring effect” — the ring-shaped stain of particles leftover after coffee drops evaporate — by changing the particle shape. The discovery provides new tools for engineers to deposit uniform coatings.

See the article here:
Physicists undo the ‘coffee ring effect’ (w/ video)