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Lockheart Boutique Boutique Cardigan Boutique Cardigan Lockheart Cardigan Lockheart Cardigan Boutique Boutique Lockheart Abstract: Recently, there has been much interest in using lubricated flat and nano-/micro-structured surfaces to achieve extreme liquid-repellency: any foreign droplet immiscible with the underlying lubricant layer was shown to slide off at a small tilt angle < 5 . This behavior was hypothesized to arise from a thin lubricant overlayer film sandwiched between the droplet and solid substrate, but this has not been observed experimentally. Here, using confocal optical interferometry, we are able to visualize the intercalated film under both static and dynamic conditions. We further demonstrate that the lubricant flow entrained by droplet motion can transform a partially dewetted film into a continuous layer, by generating a sufficient hydrodynamic force to lift the droplet over the solid substrate. The droplet is therefore oleoplaning, akin to tires hydroplaning on a wet road, with minimal dissipative force (down to 0.1 μ N for 1 Boutique Cardigan Lockheart Boutique Boutique Lockheart Boutique Boutique Lockheart Cardigan Cardigan Lockheart Cardigan μ l droplet when measured using a cantilever force sensor) and no contact line pinning. The techniques and insights presented in this study will inform future work on the fundamentals of wetting for lubricated surfaces and enable their rational design.

Submission history

From: Dan Daniel [ Boutique Boutique Skirt Boutique Skirt Skirt Boutique Casual Casual Casual Skirt Casual r5Trwqx]
[v1] Sun, 7 May 2017 03:59:45 GMT (2344kb,D)
[v2] Tue, 16 May 2017 13:48:25 GMT (3686kb,D)
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