Abstract
The stability of superspheres containing a few tens of particles, formed by the aggregation of weakly charged spherical colloidal crystalites, can be explained by the existence of two opposing forces of different range within the superspheres: long-range electrostatic repulsion and shortrange attractive dispersion. A condition of stability is found that is in quantitative agreement with observation. The superspheres are a manifestation of frustration, analogous to frustration in spin glasses. The generality of the phenomenon is discussed.
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Schedule a callMore From: Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
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