Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of Metal Element in Catalytic Growth of Carbon Nanotubes   Using first principles calculations, we model the chemical vapor deposition
(CVD) growth of carbon nanotubes (CNT) on nanoparticles of late transition (Ni,
Pd, Pt) and coinage (Cu, Ag, Au) metals. The process is analyzed in terms of
the binding of mono- and diatomic carbon species, their diffusion pathways, and
the stability of the growing CNT. We find that the diffusion pathways can be
controlled by the choice of the catalyst and the carbon precursor. Binding of
the CNT through armchair edges is more favorable than through zigzag ones, but
the relative stability varies significantly among the metals. Coinage metals,
in particular Cu, are found to favor CVD growth of CNTs at low temperatures and
with narrow chirality distributions.

37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
3
The categories of this paper are: physics
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex