Leidenfrost Dynamics: Supplemental Video 5

A supplemental video from the 2013 review by David Quéré, "Leidenfrost Dynamics," from the Annual Review of Fluid Mechanics.

A Leidenfrost drop running on a plate with crenelations slows down on centimeter-size distances instead of meters on a flat solid. The distance between two crenels is 1.5 mm, and the depth is 250 µm. The enhanced friction is attributed to the successive (soft) impacts of the bumps below the drop onto the sides of the crenelations. Credits: Guillaume Dupeux and Marie le Merrer.