Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stress Transfer Mechanisms at the Submicron Level for Graphene/Polymer
  Systems   The stress transfer mechanism from a polymer substrate to a nano-inclusion,
such as a graphene flake, is of extreme interest for the production of
effective nanocomposites. Previous work conducted mainly at the micron scale
has shown that the intrinsic mechanism of stress transfer is shear at the
interface. However, since the interfacial shear takes its maximum value at the
very edge of the nano-inclusion it is of extreme interest to assess the effect
of edge integrity upon axial stress transfer at the submicron scale. Here, we
conduct a detailed Raman line mapping near the edges of a monolayer graphene
flake which is simply supported onto an epoxy based photoresist
(SU8)/poly(methyl methacrylate) (PMMA) matrix at steps as small as 100 nm. We
show for the first time that, the distribution of axial strain (stress) along
the flake deviates somewhat from the classical shear-lag prediction for a
region of about 2 um from the edge. This behavior is mainly attributed to the
presence of residual stresses, unintentional doping and/or edge effects
(deviation from the equilibrium values of bond lengths and angles, as well as
different edge chiralities). By considering a simple balance of shear-to-normal
stresses at the interface we are able to directly convert the strain (stress)
gradient to values of interfacial shear stress for all the applied tensile
levels without assuming classical shear-lag behavior. For large flakes a
maximum value of interfacial shear stress (ISS) of 0.4 MPa is obtained prior to
flake slipping.

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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: cs
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The categories of this paper are: q-bio
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin