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Repulsion Between Inorganic Particles Inserted Within Surfactant Bilayers

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Doru Constantin, Brigitte Pansu, Marianne Impéror, Patrick Davidson, and François Ribot

Editorial: Physical Review Letters, 101, p.098101, 2008.


We study by synchrotron small-angle x-ray scattering highly aligned lamellar phases of a zwitterionic surfactant, doped with monodisperse and spherical hydrophobic inorganic particles as a function of particle concentration. Analysis of the structure factor of the two-dimensional fluid formed by the particles in the plane of the bilayer gives access to their membrane-mediated interaction, which is repulsive, with a contact value of about 4kBT and a range of 14 Å. Systematic application of this technique should lead to a better understanding of the interaction between membrane inclusions.

Cuvinte cheie: nanoparticles, interaction, bilayers