Velocity Profile inside Piezoacoustic Inkjet Droplets in Flight: Comparison between Experiment and Numerical Simulation

Arjan van der Bos, Jan van der Meulen, Theo Driessen, Marc van den Berg, Hans Reinten, Herman Wijshoff, Michel Versluis, Detlef Lohse

Physical Review Applied · 2014 · 144 citations · 24 references

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Abstract

Inkjet printers fire droplets that travel a thousand times their own radius every second. The dynamics of this process involve a delicate interplay between surface tension and hydrodynamics that have now been experimentally measured in unprecedented detail. Experimental data are compared with analytic predictions to reveal internal velocities within a droplet that likewise vary by many meters per second within a droplet only tens of microns across.

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