Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bound state and hydrodynamic interaction of microrods in chiral nematic
  liquid crystals   In a striking departure from the pair interaction of spherical microparticles
in chiral nematic liquid crystals, we show that a pair of microrods form a
bound state due to the competing effect of electrostatic (Coulomb) and elastic
interactions. The robustness of the bound state is demonstrated by applying
external electrical and mechanical forces that perturbs their equilibrium
position as well as orientation. In the bound state, the microrods interact
through the hydrodynamic forces which are determined from the measurements of
the correlated thermal fluctuations in their position using two-particle
cross-correlation spectroscopy. These findings reveal unexplored aspects of
liquid-crystal dispersions which are important for understanding the assembly
and dynamics of nano and microparticles in chiral nematic liquid crystals.

26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg