Laser-induced micro-jetting from armored droplets

J. O. Marston, S. T. Thoroddsen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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.

Original languageEnglish
Article number140
JournalExperiments in Fluids
Volume56
Issue number7
DOIs
StatePublished - Jul 24 2015

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