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11 papers · 2 filters
Re-entrant melting and freezing in a model system of charged colloids
C. Patrick Royall, Mirjam E. Leunissen, Antti-Pekka Hynninen +2
We studied the phase behavior of charged and sterically stabilized colloids using confocal microscopy in a less polar solvent (dielectric constant 5.4). Upon increasing the colloid…
Sedimentation of binary mixtures of like- and oppositely charged colloids: the primitive model or effective pair potentials?
M. Dijkstra, J. Zwanikken, R. van Roij
We study sedimentation equilibrium of low-salt suspensions of binary mixtures of charged colloids, both by Monte Carlo simulations of an effective colloids-only system and by Poiss…
Kinetic pathways of the Nematic-Isotropic phase transition as studied by confocal microscopy on rod-like viruses
M. Paul Lettinga, Kyongok Kang, Arnout Imhof +2
We investigate the kinetics of phase separation for a mixture of rodlike viruses (fd) and polymer (dextran), which effectively constitutes a system of attractive rods. This dispers…
Volume terms for charged colloids: a grand-canonical treatment
Bas Zoetekouw, Rene van Roij
We present a study of thermodynamic properties of suspensions of charged colloids on the basis of linear Poisson-Boltzmann theory. We calculate the effective Hamiltonian of the col…
Phase behaviour of charged colloidal sphere dispersions with added polymer chains
Andrea Fortini, Marjolein Dijkstra, Remco Tuinier
We study the stability of mixtures of highly screened repulsive charged spheres and non-adsorbing ideal polymer chains in a common solvent using free volume theory. The effective i…
Passage Times for Unbiased Polymer Translocation through a Narrow Pore
Joanne Klein Wolterink, Gerard T. Barkema, Debabrata Panja
We study the translocation process of a polymer in the absence of external fields for various pore diameters and membrane thickness . The polymer performs Rouse and reptatio…