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000016797 084__ $$2WoS$$aPhysics, Atomic, Molecular & Chemical
000016797 1001_ $$0P:(DE-Juel1)VDB86654$$aHeinen, M.$$b0$$uFZJ
000016797 245__ $$aShort-time rheology and diffusion in suspensions of Yukawa-type colloidal particles
000016797 260__ $$aMelville, NY$$bAmerican Institute of Physics$$c2011
000016797 300__ $$a154504
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000016797 440_0 $$03145$$aJournal of Chemical Physics$$v135$$x0021-9606$$y15
000016797 500__ $$aM.H. acknowledges support by the International Helmholtz Research School of Biophysics and Soft Matter (IHRS BioSoft). A.J.B. acknowledges financial support from SeCyT-UNC and CONICET. This work was under appropriation of funds from the Deutsche Forschungsgemeinschaft (DFG) (SFB-TR6, project B2).
000016797 520__ $$aA comprehensive study is presented on the short-time dynamics in suspensions of charged colloidal spheres. The explored parameter space covers the major part of the fluid-state regime, with colloid concentrations extending up to the freezing transition. The particles are assumed to interact directly by a hard-core plus screened Coulomb potential, and indirectly by solvent-mediated hydrodynamic interactions. By comparison with accurate accelerated Stokesian Dynamics (ASD) simulations of the hydrodynamic function H(q), and the high-frequency viscosity η(∞), we investigate the accuracy of two fast and easy-to-implement analytical schemes. The first scheme, referred to as the pairwise additive (PA) scheme, uses exact two-body hydrodynamic mobility tensors. It is in good agreement with the ASD simulations of H(q) and η(∞), for smaller volume fractions up to about 10% and 20%, respectively. The second scheme is a hybrid method combining the virtues of the δγ scheme by Beenakker and Mazur with those of the PA scheme. It leads to predictions in good agreement with the simulation data, for all considered concentrations, combining thus precision with computational efficiency. The hybrid method is used to test the accuracy of a generalized Stokes-Einstein (GSE) relation proposed by Kholodenko and Douglas, showing its severe violation in low salinity systems. For hard spheres, however, this GSE relation applies decently well.
000016797 536__ $$0G:(DE-Juel1)FUEK505$$2G:(DE-HGF)$$aBioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung$$cP45$$x0
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000016797 65320 $$2Author$$acolloids
000016797 65320 $$2Author$$adiffusion
000016797 65320 $$2Author$$aelectric potential
000016797 65320 $$2Author$$afluids
000016797 65320 $$2Author$$afreezing
000016797 65320 $$2Author$$ahydrodynamics
000016797 65320 $$2Author$$arheology
000016797 65320 $$2Author$$asuspensions
000016797 65320 $$2Author$$aviscosity
000016797 650_2 $$2MeSH$$aColloids: chemistry
000016797 650_2 $$2MeSH$$aComputer Simulation
000016797 650_2 $$2MeSH$$aDiffusion
000016797 650_2 $$2MeSH$$aModels, Chemical
000016797 650_2 $$2MeSH$$aParticle Size
000016797 650_2 $$2MeSH$$aRheology
000016797 650_2 $$2MeSH$$aSuspensions
000016797 650_2 $$2MeSH$$aTime Factors
000016797 650_2 $$2MeSH$$aViscosity
000016797 650_7 $$00$$2NLM Chemicals$$aColloids
000016797 650_7 $$00$$2NLM Chemicals$$aSuspensions
000016797 650_7 $$2WoSType$$aJ
000016797 7001_ $$0P:(DE-HGF)0$$aBanchio, A.J.$$b1
000016797 7001_ $$0P:(DE-Juel1)130858$$aNägele, G.$$b2$$uFZJ
000016797 773__ $$0PERI:(DE-600)1473050-9$$a10.1063/1.3646962$$gVol. 135, p. 154504$$p154504$$q135<154504$$tThe @journal of chemical physics$$v135$$x0021-9606$$y2011
000016797 8567_ $$uhttp://dx.doi.org/10.1063/1.3646962
000016797 8564_ $$uhttps://juser.fz-juelich.de/record/16797/files/4637.pdf$$yOpenAccess
000016797 8564_ $$uhttps://juser.fz-juelich.de/record/16797/files/FZJ-16797.pdf$$yPublished under German "Allianz" Licensing conditions on 2011-10-19. Available in OpenAccess from 2011-10-19$$zPublished final document.
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000016797 9132_ $$0G:(DE-HGF)POF3-551$$1G:(DE-HGF)POF3-550$$2G:(DE-HGF)POF3-500$$aDE-HGF$$bKey Technologies$$lBioSoft  Fundamentals for future Technologies in the fields of Soft Matter and Life Sciences$$vFunctional Macromolecules and Complexes$$x0
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