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The droplet pinch-off from a liquid jet was investigated experimentally. Details of the shape of the thin liquid neck joining the droplet to its parent body were studied in terms of the fluid viscosity and the jet diameter. As the viscosity increased, the neck rapidly elongated creating a long thread. Its final diameter before rupture was approximately one micrometer and seems to be constant within wide range of parameters varied. One or multiple break-ups of the micro-thread were observed, which produced micro-satellites, i.e. droplets in a micrometer range [46,48].
See also: Euromech Colloquium 355