Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Easy orientation of diblock copolymers on self-assembled monolayers
  using UV irradiation   A simple method based on UV/ozone treatment is proposed to control the
surface energy of dense grafted silane layers for orientating block copolymer
mesophases. Our method allows one to tune the surface energy down to a fraction
of a mN/m. We show that related to the surface, perpendicular orientation of a
lamellar phase of a PS-PMMA diblock copolymer (neutral surface) is obtained for
a critical surface energy of 23.9-25.7 mN/m. Perpendicular cylinders are
obtained for 24.6 mN/m and parallel cylinders for 26.8 mN/m.

23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph