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arXiv · 1604.00214

Plasma Propulsion of a Metallic Micro-droplet and its Deformation upon Laser Impact

Dmitry Kurilovich·Alexander L. Klein·Francesco Torretti·Adam Lassise·Ronnie Hoekstra·Wim Ubachs·Hanneke Gelderblom·Oscar O. Versolato
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Abstract

The propulsion of a liquid indium-tin micro-droplet by nanosecond-pulse laser impact is experimentally investigated. We capture the physics of the droplet propulsion in a scaling law that accurately describes the plasma-imparted momentum transfer, enabling the optimization of the laser-droplet coupling. The subsequent deformation of the droplet is described by an analytical model that accounts for the droplet's propulsion velocity and the liquid properties. Comparing our findings to those from vaporization-accelerated mm-sized water droplets, we demonstrate that the hydrodynamic response of laser-impacted droplets is scalable and independent of the propulsion mechanism.

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Dmitry Kurilovich, Alexander L. Klein, Francesco Torretti, Adam Lassise, Ronnie Hoekstra, Wim Ubachs, Hanneke Gelderblom, Oscar O. Versolato. 2016-04-01. Plasma Propulsion of a Metallic Micro-droplet and its Deformation upon Laser Impact. https://doi.org/10.1103/physrevapplied.6.014018

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