@article {154016,
	title = {Grain boundary scars and spherical crystallography},
	journal = {Science},
	volume = {299},
	number = {5613},
	year = {2003},
	pages = {1716-1718},
	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.},
	url = {https://science.sciencemag.org/content/299/5613/1716},
	author = {A. R. Bausch and Bowick, M.J. and Cacciuto, A. and A. D. Dinsmore and M. F. Hsu and Nelson, D.R. and M. G. Nikolaides and Travesset, A. and Weitz, D. A.}
}
