Inelastic collisions and anisotropic aggregation of particles in a nematic collider driven by backflow.

@article{Pishnyak2011InelasticCA,
  title={Inelastic collisions and anisotropic aggregation of particles in a nematic collider driven by backflow.},
  author={Oleg P. Pishnyak and Sergij V. Shiyanovskii and Oleg D. Lavrentovich},
  journal={Physical review letters},
  year={2011},
  volume={106 4},
  pages={
          047801
        }
}
We design a nematic collider for controlled out-of-equilibrium anisotropic aggregation of spherical colloidal particles. The nematic surrounding imparts dipolar interactions among the spheres. A bidirectional backflow of the nematic liquid crystal in a periodic electric field forces the spheres to collide with each other. The inelastic collisions are of two types, head to tail and head to head. Head-to-tail collisions of dipoles result in longitudinal aggregation while head-to-head collisions… Expand
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