IFISUR   23398
INSTITUTO DE FISICA DEL SUR
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Mechanisms of defect motion in hexagonal systems on sinusoidal substrates
Autor/es:
GARCIA NA; GOMEZ LR; VEGA DA
Lugar:
Boston, USA
Reunión:
Congreso; APS March Meeting 2012; 2012
Institución organizadora:
American Physical Society
Resumen:
equilibrium configurations of two-dimensional hexagonal systems constrained to lie on a substrate with sinusoidal topography. Similarly to previous studies, we have found a strong coupling between defects and geometry, where the regions with the highest local Gaussian curvature act as sink for disclinations. We have studied the influence of the local curvature of the substrate on the diffusional dynamics of dislocations and disclinations. We have found a novel mechanism of defect diffusion where linearly correlated arrays of dislocations (scars) move according to the gradient of curvature.