Jamming phase diagram of colloidal dispersions by molecular dynamics simulations

Kumar, Anil; Wu, Jianzhong
May 2004
Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4565
Academic Journal
We report a three-dimensional jamming phase diagram of a model colloidal system obtained from molecular dynamics simulations where the inter-colloidal forces are represented by the Derjaguin–Landau–Verwey–Overbeek potential. The jamming threshold is uniquely defined in terms of the critical volume fraction, the critical temperature, and the critical yield stress. The simulation results indicate that near the jamming transition the shear viscosity diverges following a critical-like scaling law as observed for realistic colloids. These results offer a convincing proof for unifying different nonequilibrium transitions in colloids under the concepts of jamming. © 2004 American Institute of Physics.


Related Articles

  • Shear viscosity of a supercooled polymer melt via nonequilibrium molecular dynamics simulations. Varnik, F.; Binder, K. // Journal of Chemical Physics;10/1/2002, Vol. 117 Issue 13, p6336 

    Using nonequilibrium molecular dynamics simulations, we compute the shear viscosity, η[sub s], of a glass forming polymer melt at temperatures ranging from the normal liquid state down to the supercooled state. For this purpose, the polymer melt is confined between two solid walls and a...

  • Decane under shear: A molecular dynamics study using reversible NVT-SLLOD and NPT-SLLOD algorithms. Mundy, Christopher J.; Siepmann, J. Ilja; Klein, Michael L. // Journal of Chemical Physics;12/15/1995, Vol. 103 Issue 23, p10192 

    In a recent article [J. Chem. Phys. 102, 3376 (1995)] molecular dynamics (MD) was used to calculate the shear viscosity of liquid n-decane using an intermolecular potential that reproduces the liquid–vapor coexistence as well as the critical temperature. Semi-quantitative agreement with...

  • Metastable Lennard-Jones fluids. I. Shear viscosity. Baidakov, Vladimir G.; Protsenko, Sergey P.; Kozlova, Zaliya R. // Journal of Chemical Physics;10/28/2012, Vol. 137 Issue 16, p164507 

    Molecular dynamics methods have been employed to calculate the coefficient of shear viscosity ηs* of a Lennard-Jones fluid. Calculations have been performed in the range of reduced temperatures 0.4 <= kBT/&eh; <= 2.0 and densities 0.01 ≤ ρσ3 ≤ 1.2. Values of ηs* have been...

  • Many-body correlations and the cancellation effect in the Green–Kubo time correlation functions for the shear viscosity. Stassen, H.; Steele, W. A. // Journal of Chemical Physics;6/1/1995, Vol. 102 Issue 21, p8533 

    Molecular dynamics simulations of the time-correlation functions that appear in the Green–Kubo expression for the shear viscosity are reported for liquid argon over a wide range of densities. The potential part of the microscopic stress tensor is separated into contributions due to the...

  • Fluid structure and transport properties of water inside carbon nanotubes. Yingchun Liu; Qi Wang; Tao Wu; Li Zhang // Journal of Chemical Physics;12/15/2005, Vol. 123 Issue 23, p234701 

    The fluid structure and transport properties of water confined in single-walled carbon nanotubes (CNTs) with different diameters have been investigated by molecular-dynamics simulation. The effects of CNT diameter, density of water, and temperature on the molecular distributions and transport...

  • Turing patterns and solitary structures under global control. Pismen, L. M. // Journal of Chemical Physics;8/15/1994, Vol. 101 Issue 4, p3135 

    Striped Turing patterns and solitary band and disk structures are constructed using a three-variable multiscale model with cubic nonlinearity and global control. The existence and stability conditions of regular structures are analyzed using the equation of motion of curved boundaries between...

  • A comparison between the long-time self-diffusion and low shear viscosity of concentrated dispersions of charged colloidal silica spheres. Imhof, A.; van Blaaderen, A.; Maret, G.; Mellema, J.; Dhont, J. K. G. // Journal of Chemical Physics;2/1/1994, Vol. 100 Issue 3, p2170 

    Measurements are presented of the long-time self-diffusion coefficient and of the low shear limiting viscosity of dispersions of charge stabilized colloidal silica spheres. Long-time self-diffusion coefficients were measured using fluorescence recovery after photobleaching (FRAP), the theory of...

  • Effective molecular diffusion coefficient in a two-phase gel medium. Hickey, Owen A.; Mercier, Jean-François; Gauthier, Michel G.; Tessier, Frédéric; Bekhechi, Smaine; Slater, Gary W. // Journal of Chemical Physics;5/28/2006, Vol. 124 Issue 20, p204903 

    We derive a mean-field expression for the effective diffusion coefficient of a probe molecule in a two-phase medium consisting of a hydrogel with large gel-free solvent inclusions, in terms of the homogeneous diffusion coefficients in the gel and in the solvent. Upon comparing with exact...

  • Approximate inclusion of quantum effects in transition path sampling. Antoniou, Dimitri; Schwartz, Steven D. // Journal of Chemical Physics;12/14/2009, Vol. 131 Issue 22, p224111 

    We propose a method for incorporating nuclear quantum effects in transition path sampling studies of systems that consist of a few degrees of freedom that must be treated quantum mechanically, while the rest are classical-like. We used the normal mode centroid method to describe the quantum...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics