Critical Casimir forces in colloidal suspensions on chemically patterned surfaces
Soft Condensed Matter
2009-11-13 v1
Abstract
We investigate the behavior of colloidal particles immersed in a binary liquid mixture of water and 2,6-lutidine in the presence of a chemically patterned substrate. Close to the critical point of the mixture, the particles are subjected to critical Casimir interactions with force components normal and parallel to the surface. Because the strength and sign of these interactions can be tuned by variations in the surface properties and the mixtures temperature, critical Casimir forces allow the formation of highly ordered monolayers but also extend the use of colloids as model systems.
Cite
@article{arxiv.0810.1866,
title = {Critical Casimir forces in colloidal suspensions on chemically patterned surfaces},
author = {F. Soyka and O. Zvyagolskaya and C. Hertlein and L. Helden and C. Bechinger},
journal= {arXiv preprint arXiv:0810.1866},
year = {2009}
}
Comments
4 papges, 4 figures, accepted at Phys. Rev. Lett