Abstract
A system based on ink-jet technology has been used to demonstrate the controlled generation of monodispersed 100 μm diameter molten solder droplets. Oxide formation on the surface of the molten solder jet was shown to have a drastic effect on the droplet formation process. If the oxygen is not removed from the environment, no jet break up occurs. The growth rate of a radial disturbance on a capillary jet of molten solder is similar in magnitude to that predicted by Rayleigh and Weber theory, but the agreement is not good enough to say that these theories are valid for the liquid metal jet.
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