Wave propagation and structural dynamics in graphene nanoribbons

Scarpa, F., Ruzzene, M., Adhikari, S. and Chowdhury, R.,
SPIE Smart Structures, Materials, Nondestructive Evaluation and Health Monitoring Conference, San Diego, California, USA, March 2010.

Graphene nanoribbons (GNRs) are novel interesting nanostructures for the electronics industry, whereas their state as metallic or semiconductor material depends on the chirality of the graphene structure. We model the natural frequencies and the wave propagation characteristics of GNRs using an equivalent atomistic-continuum FE model previously developed by some of the Authors, where the C-C bonds thickness and average equilibrium length during dynamic loading are identified during a nonlinear minimisation process of the system Hamiltonian. We demonstrate that the thickness and equilibrium lengths for the different dynamic cases are different from the classical constant values used in open literature (0.34 nm for thickness and 0.142 nm for equilibrium length), in particular when considering out-of-plane flexural deformations. These parameters have to be taken into account when nanoribbons are designed as nano-oscillators.
BiBTeX Entry
@inproceedings{cp77,
    AUTHOR={F. Scarpa and M. Ruzzene and S. Adhikari and R. Chowdhury},
    TITLE={Wave propagation and structural dynamics in graphene nanoribbons},
    BOOKTITLE={SPIE Smart Structures, Materials, Nondestructive Evaluation and Health Monitoring Conference},
    YEAR={2010},
    Address={San Diego, California, USA},
    Month={March},
    note = {accepted}
}
by Sondipon Adhikari