Band Structure in Carbon Nanostructure Phononic Crystals

AUTOR(ES)

Miranda Júnior, Edson Jansen Pedrosa de, Santos, José Maria Campos Dos

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

27/11/2017

RESUMO

We investigate the band structure of elastic waves propagating in carbon nanostructure phononic crystals with square, rectangular, triangular, honeycomb and Kagomé lattices. We also study the influence of carbon nanostructure cross section geometry - circular, hollow circular, square and rotated square with a 45° angle of rotation with respect to the x and y axes. Plane wave expansion method is used to solve the governing equations of motion of a isotropic solid based on classical elasticity theory, ignoring nanoscopic size effects, considering two-dimensional periodicity and wave propagation in the xy plane. Complete band gaps between XY and Z modes are observed for all types of carbon nanostructures. The best performance is for nanophononic crystal with circular carbon nanostructures in a triangular lattice with high band gap width in a broad range of filling fraction. We suggest that carbon nanostructure phononic crystals are feasible for elastic vibration management in GHz.

Documentos Relacionados

• Complete Band Gaps in Nano-Piezoelectric Phononic Crystals
• Flexural Wave Band Gaps in Phononic Crystal Euler-Bernoulli Beams Using Wave Finite Element and Plane Wave Expansion Methods
• Water structure in cubic insulin crystals.
• Structure of carboxymyoglobin in crystals and in solution.
• The Molecular Structure of Yeast Phenylalanine Transfer RNA in Monoclinic Crystals