Nano Archive

Gravity-free hydraulic jumps and metal femtocups.

Govindarajan, Rama and Mathur, Manikandan and Dasgupta, Ratul and Selvi, N.R. and John, Neena Susan and Kulkarni , G. U. (2007) Gravity-free hydraulic jumps and metal femtocups. Phys. Rev. Lett., 98 . p. 164502.

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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.

Item Type:Article
Subjects:Engineering > Nanotechnology applications in mechanical engineering
Material Science > Nanofabrication processes and tools
Divisions:Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:3955
Deposited By:JNCASR
Deposited On:03 Feb 2009 04:12
Last Modified:03 Feb 2009 04:12

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