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Dynamical phenomena: walking and orbiting droplets | | Y Couder
; S Protière
; E Fort
; A Boudaoud
; | | Date: |
8 Sep 2005 | | Journal: | Nature, 437 (7056), 208 | | Abstract: | Small drops can bounce indefinitely on a bath of the same liquid if the container is oscillated vertically at a sufficiently high acceleration. Here we show that bouncing droplets can be made to ’walk’ at constant horizontal velocity on the liquid surface by increasing this acceleration. This transition yields a new type of localized state with particle-wave duality: surface capillary waves emanate from a bouncing drop, which self-propels by interaction with its own wave and becomes a walker. When two walkers come close, they interact through their waves and this ’collision’ may cause the two walkers to orbit around each other. | | Source: | PubMed, pmid16148925 doi: 10.1038/437208a | | Services: | Forum | Review | Favorites | |
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