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arXiv · 1706.08827

A new material property of graphene: the bending Poisson coefficient

Cesare Davini·Antonino Favata·Roberto Paroni
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Abstract

The in-plane infinitesimal deformations of graphene are well understood: they can be computed by solving the equilibrium problem for a sheet of isotropic elastic material with suitable stretching stiffness and Poisson coefficient $\nu^{(m)}$. Here, we pose the following question: does the Poisson coefficient $\nu^{(m)}$ affect the response to bending of graphene? Despite what happens if one adopts classical structural models, it does not. In this letter we show that a new material property, conceptually and quantitatively different from $\nu^{(m)}$, has to be introduced. We term this new parameter bending Poisson coefficient; we propose for it a physical interpretation in terms of the atomic interactions and produce a quantitative evaluation.

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Cesare Davini, Antonino Favata, Roberto Paroni. 2017-06-27. A new material property of graphene: the bending Poisson coefficient. https://doi.org/10.1209/0295-5075%2F118%2F26001

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