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Fluid Dynamics

The invisible jet

Generating droplets below a micrometre in size from the break-up of a liquid jet or droplet usually requires surfactants or electric fields. By simply focusing one jet with a pair of coaxial ones, this could be extended down to the nanoscale.

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Figure 1: Simulations of the focusing of a liquid jet emerging from a capillary (of unit radius) by subjecting it to an extensional flow by a fast-moving surrounding liquid.

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Correspondence to Osman A. Basaran.

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Basaran, O., Suryo, R. The invisible jet. Nature Phys 3, 679–680 (2007). https://doi.org/10.1038/nphys735

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