Band Structure in Carbon Nanostructure Phononic Crystals
| Autor: | Jose Maria Campos dos Santos, Edson Jansen Pedrosa de Miranda Junior |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Plane wave expansion method Wave propagation Band gap band structure vibration control Physics::Optics 02 engineering and technology 01 natural sciences Crystal complete band gaps Condensed Matter::Materials Science 0103 physical sciences General Materials Science Hexagonal lattice 010306 general physics Electronic band structure Materials of engineering and construction. Mechanics of materials Condensed matter physics Plane (geometry) Mechanical Engineering carbon nanostructure phononic crystal 021001 nanoscience & nanotechnology Condensed Matter Physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Mechanics of Materials Isotropic solid TA401-492 plane wave expansion method 0210 nano-technology |
| Zdroj: | Materials Research v.20 suppl.2 2017 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Vol 20, Iss suppl 2, Pp 555-571 (2017) Materials Research, Issue: ahead, Published: 27 NOV 2017 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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