Forces between elongated particles in a nematic colloid
arXiv:cond-mat/0307261 · doi:10.1103/PhysRevE.68.051702
Abstract
Using molecular dynamics (MD) simulations we study the interactions between elongated colloidal particles (length to breath ratio > 1) in a nematic host. The simulation results are compared to the results of a Landau-de Gennes elastic free energy. We find that depletion forces dominate for the sizes of the colloidal particles studied. The tangential component of the force, however, allows us to resolve the elastic contribution to the total interaction. We find that this contribution differs from the quadrupolar interaction predicted at large separations. The difference is due to the presence of nonlinear effects, namely th e change in the positions and structure of the defects and their annihilation at small separations.
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Cited by in corpus (10)
- Theory of Elastic Interaction of the Colloidal Particles in the Nematic Liquid Crystal Near One Wall and in the Nematic Cell
- Interaction of colloids with a nematic-isotropic interface
- Interaction of Spherical Colloidal Particles in Nematic Media with Degenerate Planar Anchoring
- The key-lock mechanism in nematic colloidal dispersions
- Theory of elastic interaction between colloidal particles in the nematic cell in the presence of the external electric or magnetic field
- Depletion effects in smectic phases of hard rod--hard sphere mixtures
- Effective triplet interactions in nematic colloids
- Exact and approximate solutions for elastic interactions in a nematic liquid crystal
- Freedericksz-like positional transition of a micro-droplet suspended in a nematic cell
- Formation of a fast "lane" for positional transition in a microparticle-suspended nematic liquid crystal cell