Grain boundary scars and spherical crystallography |
| |
Authors: | Bausch A R Bowick M J Cacciuto A Dinsmore A D Hsu M F Nelson D R Nikolaides M G Travesset A Weitz D A |
| |
Institution: | Department of Physics, E22, Technische Universit?t München, 85747 München, Germany. |
| |
Abstract: | We describe experimental investigations of the structure of two-dimensional spherical crystals. The crystals, formed by beads self-assembled on water droplets in oil, serve as model systems for exploring very general theories about the minimum-energy configurations of particles with arbitrary repulsive interactions on curved surfaces. Above a critical system size we find that crystals develop distinctive high-angle grain boundaries, or scars, not found in planar crystals. The number of excess defects in a scar is shown to grow linearly with the dimensionless system size. The observed slope is expected to be universal, independent of the microscopic potential. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|