TY - JOUR
T1 - When like charges attract
T2 - Interactions and dynamics in charge-stabilized colloidal suspensions
AU - Grier, David G.
PY - 2000
Y1 - 2000
N2 - 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.
AB - 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.
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U2 - 10.1088/0953-8984/12/8A/309
DO - 10.1088/0953-8984/12/8A/309
M3 - Article
AN - SCOPUS:0003101934
SN - 0953-8984
VL - 12
SP - A85-A94
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 8A
ER -