Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electronic transport through carbon nanotubes -- effects of structural
  deformation and tube chirality   Atomistic simulations using a combination of classical forcefield and
Density-Functional-Theory (DFT) show that carbon atoms remain essentially sp2
coordinated in either bent tubes or tubes pushed by an atomically sharp AFM
tip. Subsequent Green's-function-based transport calculations reveal that for
armchair tubes there is no significant drop in conductance, while for zigzag
tubes the conductance can drop by several orders of magnitude in AFM-pushed
tubes. The effect can be attributed to simple stretching of the tube under tip
deformation, which opens up an energy gap at the Fermi surface.

5
The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an