Complete Band Gaps in Nano-Piezoelectric Phononic Crystals
| Autor: | Jose Maria Campos dos Santos, E.J.P. Miranda |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Plane wave expansion method Wave propagation Band gap band structure vibration control 02 engineering and technology 01 natural sciences 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 Angle of rotation Condensed matter physics Plane (geometry) Mechanical Engineering nano-piezoelectric phononic crystal 021001 nanoscience & nanotechnology Condensed Matter Physics Piezoelectricity Mechanics of Materials TA401-492 plane wave expansion method 0210 nano-technology |
| Zdroj: | Materials Research, Vol 20, Iss suppl 1, Pp 15-38 (2017) Materials Research, Issue: ahead, Published: 30 OCT 2017 Materials Research, Volume: 20 Supplement 1, Pages: 15-38, Published: 30 OCT 2017 Materials Research v.20 suppl.1 2017 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
| ISSN: | 1516-1439 |
| Popis: | We study the band structure of elastic waves propagating in a nano-piezoelectric phononic crystal consisting of a polymeric matrix reinforced by BaTiO3 inclusions in square, rectangular, triangular, honeycomb and Kagome lattices. We also investigate the influence of inclusion cross section geometry - circular, hollow circular, square and rotated square with a 45o angle of rotation with respect to x and y axes. Plane wave expansion method is used to solve the governing equations of motion of a piezoelectric 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 inclusions and the best performance is for circular inclusion in a triangular lattice. Piezoelectricity influences significantly the band gaps for hollow circular inclusion in lower frequencies. We suggest that nano-piezoelectric phononic crystals are feasible for elastic vibration management in GHz. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|