%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 }