Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Defect-polymorphism controlled electrophoretic propulsion of anisometric
  microparticles in a nematic liquid crystal   Nontrivial shape of colloidal particles create complex elastic distortions
and topological defects in liquid crystals and play a key role in governing
their electrophoretic propulsion through the medium. Here, we report
experimental results on defects and electrophoretic transport of anisometric
(snowman-shaped) dielectric particles subjected to an alternating electric
field perpendicular to the director in a nematic liquid crystal. We demonstrate
that the shape asymmetry gives rise to defect-polymorphism by nucleating point
or ring defects at multiple locations on the particle and controls the
direction as well as the magnitude of the electrophoretic propulsion. Our
findings unveil a novel degree of freedom in translocating microparticles in
liquid crystals for applications in microfluidics, controlled transport and
assembly.

14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas