Laser-induced micro-jetting from armored droplets

Type
Article

Authors
Marston, J. O.
Thoroddsen, Sigurdur T

KAUST Department
High-Speed Fluids Imaging Laboratory
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division

Online Publication Date
2015-06-23

Print Publication Date
2015-07

Date
2015-06-23

Abstract
We present findings from an experimental study of laser-induced cavitation within a liquid drop coated with a granular material, commonly referred to as “armored droplets” or “liquid marbles.” The cavitation event follows the formation of plasma after a nanosecond laser pulse. Using ultra-high-speed imaging up to 320,610 fps, we investigate the extremely rapid dynamics following the cavitation, which manifests itself in the form of a plethora of micro-jets emanating simultaneously from the spaces between particles on the surface of the drop. These fine jets break up into droplets with a relatively narrow diameter range, on the order of 10 μm. © 2015, Springer-Verlag Berlin Heidelberg.

Citation
Marston, J. O., & Thoroddsen, S. T. (2015). Laser-induced micro-jetting from armored droplets. Experiments in Fluids, 56(7). doi:10.1007/s00348-015-2007-6

Publisher
Springer Nature

Journal
Experiments in Fluids

DOI
10.1007/s00348-015-2007-6

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