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 ##IMG## [http://ej.iop.org/images/0295-5075/118/2/26001/epl18559ieqn1.gif] {$nu^{(m)}$} . Here, we pose the following question: does the Poisson coefficient ##IMG## [http://ej.iop.org/images/0295-5075/118/2/26001/epl18559ieqn2.gif] {$nu^{(m)}$} 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 ##IMG## [http://ej.iop.org/images/0295-5075/118/2/26001/epl18559ieqn3.gif] {$nu^{(m)}$} , has to be introduced. We term this new parameter bending Poisson coefficient ; we propose for it a physical interpretation in terms…

Published in: "EPL".