Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Depletion interactions of non-spherical colloidal particles in polymer
  solutions   We consider anisotropic colloidal particles immersed in a solution of long,
flexible, and nonadsorbing polymers. For the dumbbell shapes of recently
synthesized particles consisting of two intersecting spheres and for
lens-shaped particles with spherical surfaces we calculate the isotropic and
anisotropic interaction parameters that determine the immersion free energy and
the orientation-dependent depletion interaction between particles that are
induced by the polymers. Exact results are obtained for random-walk like
(ideal) polymer chains.

16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics