Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theoretical Study of Atomic Structure and Elastic Properties of Branched
  Silicon Nanowires   The atomic structure and elastic properties of Y-silicon nanowire junctions
of fork- and bough-types were theoretically studied and effective Young modulus
were calculated using the Tersoff interatomic potential. In the final stages of
bending, new bonds between different parts of the Y-shaped wires are formed. It
was found that the stiffness of the nanowires considered can be compared with
the stiffness of carbon nanotube Y-junctions.

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The categories of this paper are: eess
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: bayes-an