Long Range Hydration Effects in Electrolytic Free Suspended Black Films
Soft Condensed Matter
2009-10-31 v1
Abstract
The force law within free suspended black films made of negatively charged Aerosol-OT (AOT) with added LiCl or CsCl is studied accurately using X-ray reflectivity (ca. 1{\AA}). We find an electrolyte concentration threshold above which a substantial additional repulsion is detected in the LiCl films, up to distances of 100 {\AA}. We interpret this phenomenon as an augmentation of the Debye screening length, due to the local screening of the condensed hydrophilic counterions by the primary hydration shell.
Keywords
Cite
@article{arxiv.cond-mat/9806186,
title = {Long Range Hydration Effects in Electrolytic Free Suspended Black Films},
author = {D. Sentenac and J. J. Benattar},
journal= {arXiv preprint arXiv:cond-mat/9806186},
year = {2009}
}
Comments
4 pages, 4 figures, to be published Phys. Rev. Lett