  We present experiments where anisometric colloidal microparticles dispersed
in a nematic liquid crystal cell with homeotropic anchoring conditions are
dynamically assembled by means of liquid-crystal-enabled electrophoresis
(LCEEP) using an AC electric field perpendicular to the confining plates. A
nematic host with negative dielectric anisotropy leads to a driving force
parallel to the cell plates. We take advantage of the resulting gliding
anchoring conditions and the degeneracy in the direction of particle motion to
design reconfigurable trajectories using a photosensitive anchoring layer
(azosilane self-assembled monolayer), as the particle trajectory follows the
local director orientation.
