4 papers
Atomistic potential for graphene and other sp carbon systems
Zacharias G. Fthenakis, George Kalosakas, Georgios D. Chatzidakis +3
We introduce a torsional force field for sp carbon to augment an in-plane atomistic potential of a previous work (Kalosakas et al, J. Appl. Phys. {\bf 113}, 134307 (2013)) so t…
A Torsional potential for graphene derived from fitting to DFT results
Georgios D. Chatzidakis, George Kalosakas, Zacharias G. Fthenakis +1
We present a simple torsional potential for graphene to accurately describe its out-of-plane deformations. The parameters of the potential are derived through appropriate fitting w…
Structural deformations of two-dimensional planar structures under uniaxial strain: The case of graphene
Zacharias G. Fthenakis, Nektarios N. Lathiotakis
In the present work, a method for the study of the structural deformations of two dimensional planar structures under uniaxial strain is presented. The method is based on molecular…
Electronic Structure and Transport in Graphene/Haeckelite Hybrids: An {\em Ab Initio} Study
Zhen Zhu, Zacharias G. Fthenakis, David Tomanek
We combine {\em ab initio} density functional theory (DFT) structural studies with DFT-based nonequilibrium Green function calculations to investigate how the presence of non-hexag…