Gravity-free hydraulic jumps and metal femtocups

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Hydraulic jumps created by gravity are seen every day in the kitchen sink. We show that at small scales a circular hydraulic jump can be created in the absence of gravity, by surface tension. The theory is motivated by our experimental finding of a height discontinuity in spreading submicron molten metal droplets created by pulsed-laser ablation. By careful control of initial conditions, we show that this leads to solid femtolitre cups of gold, silver, copper, niobium and tin.
4 pages, 8 figures; submitted to Phys. Rev. Lett.

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Fluid Dynamics, Materials Science, Chaotic Dynamics

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http://salesiana.dossiersoluciones.com/handle/123456789/118266

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/physics/0610021
 http://arxiv.org/abs/physics/0610021

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arXiv