Trapping leidenfrost drops with crenelations.
نویسندگان
چکیده
Drops placed on very hot solids levitate on a cushion of their own vapor, as discovered by Leidenfrost. This confers to these drops a remarkable mobility, which makes problematic their control and manipulation. Here we show how crenelated surfaces can be used to increase the friction of Leidenfrost drops by a factor on the order of 100, making them decelerate and be trapped on centimetric distances instead of the usual metric ones. We measure and characterize the friction force as a function of the design of the crenelations.
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ورودعنوان ژورنال:
- Physical review letters
دوره 107 11 شماره
صفحات -
تاریخ انتشار 2011