Physics
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001phrve..64c1711s&link_type=abstract
Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Volume 64, Issue 3, September 2001, id.031711
Physics
22
Continuum Models And Theories Of Liquid Crystal Structure, Fundamentals And Theoretical, Defects In Liquid Crystals
Scientific paper
As a first approach to the motion of particles in anisotropic liquids, we study the Stokes drag of spherical particles in three different nematic environments: a uniform director field, the Saturn-ring configuration, and the dipole configuration. Two independent friction coefficients for the respective motion parallel and perpendicular to the overall symmetry axis exist. We determine these coefficients by solving the Ericksen-Leslie equations for low Ericksen numbers, i.e., when the director field is not influenced by the flow of the liquid crystal around the particle. We present streamline patterns and interpret them. Compared to the uniform director field and the Saturn-ring configuration, the dipolar configuration lacks a mirror plane as a symmetry element whose consequences we illustrate.
Stark Holger
Ventzki Dieter
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