Elastic Symmetries of Defective Crystals

Polarizing beam-splitter based on defective photonic crystals

The performance of a polarizing beam splitter based on the one-dimensional photonic crystals (1D-PCs), is theoretically investigated. The polarizing beam splitter consists of a symmetric stack of the low-index quarter-wave plates and the high-index half-wave plates with a central defect layer of air. The linear transmission properties of the polarizing beam splitter are numerically simulat...

Equilibrium configurations of defective crystals

Symmetries and defects in liquid crystals: Arceauetetrahedraearceau

To honor Yves Bouligand, champion of new ideas, complexity and living systems, I give a brief overview of our recent discovery of a biaxial Bouligand arceau in achiral tetrahedratic banana liquid crystals. To cite this article: P. Elizabeth Cladis, C. R. Chimie 11 (2008). 2008 Published by Elsevier Masson SAS on behalf of Académie des sciences.

Raman study of the phonon symmetries in BiFeO3 single crystals

C. Beekman,1,* A. A. Reijnders,1 Y. S. Oh,2 S. W. Cheong,2 and K. S. Burch1 1Department of Physics and Institute of Optical Sciences, University of Toronto, 60 St. George Street, Toronto, Ontario, Canada M5S 1A7 2Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA (Received 23 January 2012; ...

Phase-field crystals with elastic interactions.

We report on a novel extension of the recently introduced phase-field crystal (PFC) method [Elder, Phys. Rev. Lett. 88, 245701 (2002)10.1103/PhysRevLett.88.245701], which incorporates elastic interactions as well as crystal plasticity and diffusive dynamics. In our model, elastic interactions are mediated through wave modes that propagate on time scales many orders of magnitude slower than atom...