Difference between revisions of "Like-charged particles at a liquid liquid interface"
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== Capillarity In Action == | == Capillarity In Action == | ||
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The original paper claims an attactive potential of, | The original paper claims an attactive potential of, | ||
− | <math> | + | <math>U(r) = (F<sup>2</sup>/2 π γ*ln(r/r<sub>0</sub>)</math><br> |
Revision as of 20:04, 30 March 2009
by Tom Kodger
Reference
M.G. Nikolaides, A.R. Bausch, M.F. Hsu, A.D. Dinsmore, M.P. Brenner, C. Gay, D.A. Weitz and M. Megens, J. Aizenberg Nature Communications 424, August (2003);
Keywords
Dipole, Electrostatics in oil, Interface distortion
Abstract
This communication discusses a simple enigmatic attraction at an oil-water interface between like charged particles. The original paper (Nature 420, 299-310, 2002) claims that a distortion of the interface due to a diploar electric field induces a long range capillary attraction. Megens and Aizenberg claims= that this cannot be so due to a fundamental force balance. In this communcation, these authors claim that the range of the capillary distortion is only short ranged and insignifanct (10^-5 kT). The original authors then respond by acknowledging that their original response was not complete but defend their original approach of a capillary distortion. This is true when but only when the free charge density of the oil is accounted for, thus a large dipole imbalance can be created.
Capillarity In Action
The original paper claims an attactive potential of,
<math>U(r) = (F2/2 π γ*ln(r/r0)</math>