Acoustic suppression of the coffee-ring effect.

Abstract

We study the influence of acoustic fields on the evaporative self-assembly of solute particles suspended inside sessile droplets of complex fluids. The self-assembly process often results in an undesirable ring-like heterogeneous residue, a phenomenon known as the coffee-ring effect. Here we show that this ring-like self-assembly can be controlled… (More)
DOI: 10.1039/c5sm01196e

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