Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mechanical Properties of Penta-Graphene Nanotubes   Penta-graphene is the name given to a novel puckered monolayer of carbon
atoms tightly packed into an inerratic pentagonal network, theoretically, which
exhibits excellent thermal and mechanical stability and can be rolled into
penta-graphene nanotubes (PGNTs). Herein, we perform the first simulation study
of mechanical properties of PGNTs under uniaxial tension. In addition to
comparable mechanical properties with that of carbon nanotubes (CNT), it is
found that PGNTs possess promising extensibility with typical plastic behavior
due to the irreversible pentagon-to-polygon structural transformation and the
hexagon carbon ring becomes the dominating structural motif after the
transformation. The plastic characteristic of PGNTs is inherent with
strain-rate and tube-diameter independences. Moreover, within ultimate
temperature (T<1100 K), tensile deformed PGNTs manifest similar phase
transition with an approximate transition ratio from pentagon to hexagon. The
intrinsic insight provides a fundamental understanding of mechanic properties
of PGNTs, which should open up a novel perspective for the design of plastic
carbon-based nanomaterials.

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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: hep-th