Grain Boundary Scars on Spherical Crystals
arXiv:cond-mat/0506741 · doi:10.1021/la0517383
Abstract
We present an experimental system suitable for producing spherical crystals and for observing the distribution of lattice defects (disclinations and dislocations) on a significant fraction (50%) of the sphere. The introduction of fluorescently labeled particles enables us to determine the location and orientation of grain boundary scars. We find that the total number of scars and the number of excess dislocations per scar agree with theoretical predictions and that the geometrical centers of the scars are roughly positioned at the vertices of an icosahedron.
12 pages, 4 Figs, pdf format (typo in title fixed). Revised for greater clarity
References in corpus (8)
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- Dynamics and Instabilities of Defects in Two-Dimensional Crystals on Curved Backgrounds
- Kinetic Transition Networks for the Thomson Problem and Smale's 7th Problem
- Structure and dynamics of topological defects in a glassy liquid on a negatively curved manifold
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- Impact of Interaction Range and Curvature on Crystal Growth of Particles Confined to Spherical Surfaces
- Extended topological defects as sources and outlets of dislocations in spherical hexagonal crystals
- Mode-coupling approach for the slow dynamics of a liquid on a spherical substrate
- Effects of scars on crystalline shell stability under external pressure
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- Topological Constraints on the Charge Distributions for the Thomson Problem
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- Landau theory and self-assembly of spherical nanoclusters and nanoparticles with octahedral symmetry
- Transitions between phyllotactic lattice states in curved geometries
- Lattice Boltzmann Simulations of Non-Equilibrium Fluctuations in a Non-Ideal Binary Mixture
- Relaxation of interstitials in spherical colloidal crystals