We investigate the collective thermal diffusion of silica charged spheres in Sulpho-Rhodamine B/water solution at different concentrations by measuring time-dependent thermal and Soret lensings. We show a significant concentration-dependence of the thermal diffusion coefficient D-T, not previously reported. Moreover, the results clearly show that both mass diffusion and Soret coefficient are collective quantities being strongly dependent on the particles' packing fraction. Our Z-scan setup allows us to investigate the dynamics of the system at low wave vector, which addresses the influence of the interparticle interactions oil the thermal diffusion of the colloids.
%0 Journal Article
%1 Langmuir
%A Ghofraniha, Neda
%A Ruocco, Giancarlo
%A Conti, Claudio
%D 2009
%J Langmuir
%K imported myown
%N 21
%P 12495--12500
%T Collective Thermal Diffusion of Silica Colloids Studied by Nonlinear Optics
%V 25
%X We investigate the collective thermal diffusion of silica charged spheres in Sulpho-Rhodamine B/water solution at different concentrations by measuring time-dependent thermal and Soret lensings. We show a significant concentration-dependence of the thermal diffusion coefficient D-T, not previously reported. Moreover, the results clearly show that both mass diffusion and Soret coefficient are collective quantities being strongly dependent on the particles' packing fraction. Our Z-scan setup allows us to investigate the dynamics of the system at low wave vector, which addresses the influence of the interparticle interactions oil the thermal diffusion of the colloids.
@article{Langmuir,
abstract = {We investigate the collective thermal diffusion of silica charged spheres in Sulpho-Rhodamine B/water solution at different concentrations by measuring time-dependent thermal and Soret lensings. We show a significant concentration-dependence of the thermal diffusion coefficient D-T, not previously reported. Moreover, the results clearly show that both mass diffusion and Soret coefficient are collective quantities being strongly dependent on the particles' packing fraction. Our Z-scan setup allows us to investigate the dynamics of the system at low wave vector, which addresses the influence of the interparticle interactions oil the thermal diffusion of the colloids.},
added-at = {2016-08-09T20:29:14.000+0200},
author = {Ghofraniha, Neda and Ruocco, Giancarlo and Conti, Claudio},
biburl = {https://www.bibsonomy.org/bibtex/21a7040df67a619808c58d898dfb06a10/nonlinearxwaves},
interhash = {c3a3e5f2b32ecd90d38d051a3b04f9a9},
intrahash = {1a7040df67a619808c58d898dfb06a10},
journal = {Langmuir},
keywords = {imported myown},
month = {NOV 3},
number = 21,
pages = {12495--12500},
timestamp = {2016-08-09T20:35:45.000+0200},
title = {Collective Thermal Diffusion of Silica Colloids Studied by Nonlinear Optics},
volume = 25,
year = 2009
}