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Last updated on April 17, 2014 at 1:21 EDT

Latest Shreyas Mandre Stories

2010-11-24 09:37:06

Ubiquitous stain offers new ideas on industrial coatings, electronics and medicine For centuries, intellectuals have met at the ring-stained surfaces of coffee shops to pore over the most pressing problems of the day -- but has anyone ever pondered the coffee rings they left behind? What causes the formation of stain patterns left behind by coffee droplets on a surface? You might think coffee ring formation, first described quantitatively by Deegan et al in a heavily cited article, is the...