Dynamics of mechanical waves in periodic graphene nanoribbon assemblies

Dynamics of mechanical waves in periodic grapheme nanoribbon assemblies

We simulate the natural frequencies and the acoustic wave propagation characteristics of graphene nanoribbons (GNRs) of the type (8,0) and (0,8) using an equivalent atomistic-continuum FE model previously developed by some of the authors, where the C-C bonds thickness and average equilibrium lengths during the dynamic loading are identified through the minimisation of the system Hamiltonian. A ...

Hierarchical graphene nanoribbon assemblies feature unique electronic and mechanical properties.

Graphene nanoribbons present intriguing electronic properties due to their characteristic size and edge shape, and have been suggested for a wide range of applications from electronics to electromechanical systems. To bridge the scales from their nanostructural geometry--the key for their unique properties--to the requirements critical for large-scale electronics and device applications, here w...

Graphene nanoribbon heterojunctions and heterostructures

The size effect in mechanical properties of finite-sized graphene nanoribbon

Size effect in mechanical behavior of finite-sized graphene nanoribbons (GNRs) under uniaxial tension is studied using Molecular Dynamics (MD) simulations. The size effect and aspect ratio effect are significant in zigzag GNRs (ZGNRs), while their influence on the mechanical behavior of armchair GNRs (AGNRs) is negligible. For square shaped ZGNRs of increasing size, the elastic modulus increase...

Selective scattering in a zigzag graphene nanoribbon

Electric transport of a zigzag graphene nanoribbon through a step-like potential or a potential barrier is studied by using the recursive Green’s function method. The results for a step-like potential show that scattering processes in a zigzag graphene nanoribbon obey a following selection rule: when the number of zigzag chains N is even, electrons in the band m are only scattered into the band...