Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-Driven Graphene Tearing and Peeling: A Fully Atomistic Molecular
  Dynamics Investigation   In spite of years of intense research, graphene continues to produce
surprising results. Recently, it was experimentally observed that under certain
conditions graphene can self-drive its tearing and peeling from substrates.
This process can generate long, micrometer sized, folded nanoribbons without
the action of any external forces. Also, during this cracking-like propagation
process, the width of the graphene folded ribbon continuously decreases and the
process only stops when the width reaches about few hundreds nanometers in
size. It is believed that interplay between the strain energy of folded
regions, breaking of carbon-carbon covalent bonds, and adhesion of
graphene-graphene and graphene-substrate are the most fundamental features of
this process, although the detailed mechanisms at atomic scale remain unclear.
In order to gain further insights on these processes we carried out fully
atomistic reactive molecular dynamics simulations using the AIREBO potential as
available in the LAMMPS computational package. Although the reported
tearing/peeling experimental observations were only to micrometer sized
structures, our results showed that they could also occur at nanometer scale.
Our preliminary results suggest that the graphene tearing/peeling process
originates from thermal energy fluctuations that results in broken bonds,
followed by strain release that creates a local elastic wave that can either
reinforce the process, similar to a whip cracking propagation, or undermine it
by producing carbon dangling bonds that evolve to the formation of bonds
between the two layers of graphene. As the process continues in time and the
folded graphene decreases in width, the carbon-carbon bonds at the ribbon edge
and interlayer bonds get less stressed, thermal fluctuations become unable to
break them and the process stops.

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The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat