Inelastic Collisions and Anisotropic Aggregation of Particles in a Nematic Collider Driven by BackflowPhysical Review Letters
- colloidal particles,
AbstractWe 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 promote aggregation in the transversal direction. The frequency of head-to-head collisions is set by the impact parameter that controls the resulting shape of aggregates, their anisotropy, and fractal dimension.
Citation InformationOleg P. Pishnyak, Sergij V. Shiyanovskii and Oleg Lavrentovich. "Inelastic Collisions and Anisotropic Aggregation of Particles in a Nematic Collider Driven by Backflow" Physical Review Letters Vol. 106 Iss. 4 (2011)
Available at: http://works.bepress.com/oleg_lavrentovich/18/