Liquid walls and interfaces in arbitrary directions stabilized by vibrations

  title={Liquid walls and interfaces in arbitrary directions stabilized by vibrations},
  author={Benjamin Apffel and Samuel Hidalgo-Caballero and Antonin Eddi and Emmanuel Fort},
  journal={Proceedings of the National Academy of Sciences},
Significance On Earth, the surface of a liquid is expected to be horizontal due to gravity. However, new equilibria with an arbitrary direction can be created by shaking the bath hard enough at a few tens of Hertz. The inertial forces resulting from the shaking produce an effective gravity in the direction of the forcing that can overcome gravity. The noncompressibility of the liquid limits the interface stability, but this can be alleviated in liquid layers trapped between two air interfaces… 

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