Like-charge attractions in metastable colloidal crystallites
Article Abstract:
The fundamental properties of colloidal suspensions are discussed by describing phase transitions. Colloidal crystals are formed when sub-micrometer charged latex spheres are suspended in water. Unlike most conventional solids, colloidal crystals can be forced into metastable superheated states. These metastable crystals' structure and dynamics evidence strong, long-range attractions between the similarly charged spheres. However, these attractions do not match with the accepted theory of colloidal interactions.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Responsive gels formed by the spontaneous self-assembly of peptides into polymeric beta-sheet tapes
Article Abstract:
The self-assembly of synthetic peptides into polymeric tape-like structures with beta-sheet conformations that tangle together to form gels is described. The viscoelastic properties of the gels can be changed by acidity or shear forces. A range of biodegradable gels similar to gelatin, actin, amylase and agarose may be produced with an appropriate choice of peptide primary structure.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Ultradivided matter
Article Abstract:
Developments in the discovery and use of colloid systems are discussed. There are still many issues to be resolved within the theory of colloids, including the fact that some charged grains do not repel each other properly.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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