Abstract
AbstractHere a method is demonstrated to pattern liquids of varying surface tension and composition into droplets by utilizing slippery liquid‐infused surfaces prepared on chemically‐patterned substrates. The capability of different liquids to displace the lubricant from higher surface energy regions is studied and it is shown that both high and low surface tension liquids can imbibe the polymer, thereby forming droplets sharply following underlying surface energy patterns. For all liquids tested, droplet arrays of arbitrary shapes of each liquid are formed with precision down to 50 µm. By changing the chemical patterning from fluorinated to aliphatic groups, patterns of mineral and silicone oils are created. Finally, formation of 2D micropatterns of three‐phase liquid systems—fluorinated, organic, and aqueous phases—is demonstrated.
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