Now showing items 1-10 of 532
Hedgehog defects in mixtures of a nematic liquid crystal and a non-nematogenic component
(Royal Society of Chemistry, 2012-02)
A theoretical study of the core structure and composition of a hedgehog defect in a mixture of a nematic liquid crystal and a second non-nematogenic component is presented. Fractionation of the components between the bulk ...
Nonlinear dynamics of short traveling capillary-gravity waves
We establish a Green-Nagdhi model equation for capillary-gravity waves in (2+1) dimensions. Through the derivation of an asymptotic equation governing short-wave dynamics, we show that this system possesses (1 + 1) ...
Extended states in disordered doped polyacetylene chains
In this work we study the electronic structure of ordered and disordered distributions of soliton-type defects along large, finite chains of trans-polyacetylene (trans-PA), as a function of the concentration of defects. ...
The Topology Of Dislocations In Smectic Liquid Crystals
(IOP Publishing LtdBristol, 2016)
Defect-induced photoluminescence of powdered silica glass
Visible photoluminescence was generated in standard soda-lime-silica glass powder, mechanically milled in a high-energy attrition mill. The broad emission band maximum shows a linear dependence on the exciting wavelength, ...
An instrument for combining x-ray multiple diffraction and x-ray topographic imaging for examining crystal microcrystallography and perfection
(Amer Inst PhysicsMelvilleEUA, 2009)
Evaluation of crystallized biosilicate in the reconstruction of calvarial defects
The objective of this study was to assess the bone repair process of crystallized Biosilicate in surgically created defects on rats' calvaria. This biomaterial was recently developed for odontological use. We used fifteen ...
Crystallization dynamics on curved surfaces
(Amer Physical Soc, 2013-07)
We study the evolution from a liquid to a crystal phase in two-dimensional curved space. At early times, while crystal seeds grow preferentially in regions of low curvature, the lattice frustration produced in regions with ...