Gravity-free hydraulic jumps and metal femtocups
Fluid Dynamics
2007-05-23 v1 Materials Science
Chaotic Dynamics
Abstract
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.
Keywords
Cite
@article{arxiv.physics/0610021,
title = {Gravity-free hydraulic jumps and metal femtocups},
author = {Rama Govindarajan and Manikandan Mathur and Ratul DasGupta and N. R. Selvi and Neena Susan John and G. U. Kulkarni},
journal= {arXiv preprint arXiv:physics/0610021},
year = {2007}
}
Comments
4 pages, 8 figures; submitted to Phys. Rev. Lett.