Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Formation of regular structures in the process of phase separation   Phase separation under directional quenching has been studied in a
Cahn-Hilliard model. In distinct contrast to the disordered patterns which
develop under a homogeneous quench periodic stripe patterns are generated
behind the quench front. Their wavelength is uniquely defined by the velocity
of the quench interface in a wide range. Numerical simulations match perfectly
analytical results obtained in the limit of small and large velocities of the
quench interface. Additional periodic modulation of the quench interface may
lead to cellular patterns. The quenching protocols analyzed in this paper are
expected to be an effective tool in technological applications to design
nanostructured materials.

18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int