%0 Journal Article %1 PhysRevE.74.021403 %A Hecht, Martin %A Harting, Jens %A Bier, Markus %A Reinshagen, Jörg %A Herrmann, Hans J. %D 2006 %I American Physical Society %J Phys. Rev. E %K daad dfg for371 icp jsc %N 2 %P 021403 %R 10.1103/PhysRevE.74.021403 %T Shear viscosity of claylike colloids in computer simulations and experiments %U https://link.aps.org/doi/10.1103/PhysRevE.74.021403 %V 74 %X Dense suspensions of small strongly interacting particles are complex systems that are rarely understood on the microscopic level. We investigate properties of dense suspensions and sediments of small spherical $Al_2O_3$ particles in a shear cell by means of a combined molecular-dynamics and stochastic rotation dynamics simulation. We study structuring effects and the dependence of the suspension's viscosity on the shear rate and shear thinning for systems of varying salt concentration and $pH$ value. To show the agreement of our results with experimental data, the relation between the bulk $pH$ value and surface charge of spherical colloidal particles is modeled by Debye-H"uckel theory in conjunction with a $2\rule0.3em0expK$ charge regulation model.

@article{PhysRevE.74.021403, abstract = {Dense suspensions of small strongly interacting particles are complex systems that are rarely understood on the microscopic level. We investigate properties of dense suspensions and sediments of small spherical ${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ particles in a shear cell by means of a combined molecular-dynamics and stochastic rotation dynamics simulation. We study structuring effects and the dependence of the suspension's viscosity on the shear rate and shear thinning for systems of varying salt concentration and $p\mathrm{H}$ value. To show the agreement of our results with experimental data, the relation between the bulk $p\mathrm{H}$ value and surface charge of spherical colloidal particles is modeled by Debye-H\"uckel theory in conjunction with a $2\phantom{\rule{0.3em}{0ex}}\mathrm{pK}$ charge regulation model.}, added-at = {2023-10-15T19:32:36.000+0200}, author = {Hecht, Martin and Harting, Jens and Bier, Markus and Reinshagen, J\"org and Herrmann, Hans J.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2903abf83cc58df6a23661d7a5a17b882/lorisburth}, doi = {10.1103/PhysRevE.74.021403}, interhash = {495177adc44bbb330744bb33c8a4d405}, intrahash = {903abf83cc58df6a23661d7a5a17b882}, journal = {Phys. Rev. E}, keywords = {daad dfg for371 icp jsc}, month = aug, number = 2, numpages = {12}, pages = 021403, publisher = {American Physical Society}, timestamp = {2023-10-15T19:32:36.000+0200}, title = {Shear viscosity of claylike colloids in computer simulations and experiments}, url = {https://link.aps.org/doi/10.1103/PhysRevE.74.021403}, volume = 74, year = 2006 }