Template-directed colloidal crystallization
Article Abstract:
The crystallization of bulk colloidal crystals can direct the slow sedimentation of colloidal particles onto a patterned substrate. This allows the formation of the lattice structure, orientation and size of the resulting crystals, a process known as 'colloidal epitaxy.' Confocal microscopy can be used to examine the defect structures in the colloidal crystals arising from a deliberate lattice mismatch of the template. New ways to design and fashion materials based on colloidal crystals can be discovered through colloidal epitaxy.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Change in crystallization mechanism at the glass transition of colloidal spheres
Article Abstract:
A study of the glass transition during crystallization of colloidal spheres is reported. The crystallization of micrometer-sized colloidal particles were used to approximate the crystallization of hard spheres by grafting polymers to their surfaces. The results showed that the glass transition coincides with a change in the mechanism of crystallization. Regular rocking of the rock transition enhanced the formation of plate-like crystals, suggesting that shear induces nucleation of crystals.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Long-range electrostatic attraction between like-charge spheres in a charged pore
Article Abstract:
Many natural and industrial processes involving fluid suspensions rely on the control of interactions between colloidal particles. Recent research shows that, extraordinarily, like-charged colloidal particles can attract one another. A numerical study investigates the attractive forces between confined colloidal particles and shows that both nonlinearity and confinement are needed to develop a long-range attraction.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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