Abstract
Measured pair interactions among highly charged colloidal spheres dispersed in simple electrolytes yield several surprises. Isolated pairs of like-charged spheres are found to repel each other, much as predicted by conventional theory. The same spheres, however, can develop a strong and long-ranged attraction for each other when confined either by charged glass walls, or by neighbouring spheres. Such like-charge attractions are inconsistent with the mean-field theory for macroionic interactions. These and other experimental observations further constrain recently proposed extensions to the mean-field theory.
Original language | English (US) |
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Pages (from-to) | A75-A84 |
Journal | Journal of Physics Condensed Matter |
Volume | 12 |
Issue number | 8 A |
State | Published - 2000 |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics