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14 papers · 2 filters
DNA translocation through nanopores with salt gradients: The role of osmotic flow
Marius M. Hatlo, Debabrata Panja, René van Roij
Recent experiments of translocation of double stranded DNA through nanopores [M. Wanunu \textit{et al.} Nature Nanotech. {\bf 5}, 160 (2010)] reveal that the DNA capture rate can b…
Crystal nucleation of colloidal hard dumbbells
Ran Ni, Marjolein Dijkstra
Using computer simulations we investigate the homogeneous crystal nucleation in suspensions of colloidal hard dumbbells. The free energy barriers are determined by Monte Carlo simu…
Measuring Colloidal Forces from Particle Position Deviations inside an Optical Trap
Djamel El Masri, Peter van Oostrum, Frank Smallenburg +4
We measure interaction forces between pairs of charged PMMA colloidal particles suspended in a relatively low-polar medium (5 8) directly from the deviations o…
Brambilla et al. Reply to a Comment by J. Reinhardt et al. on "Probing the equilibrium dynamics of colloidal hard spheres above the mode-coupling glass transition"
G. Brambilla, D. El Masri, M. Pierno +2
G. Brambilla et al. Reply to a Comment by J. Reinhardt et al. questioning the existence of equilibrium dynamics above the critical volume fraction of colloidal hard spheres predict…
Charge regulation and ionic screening of patchy surfaces
Niels Boon, René van Roij
The properties of surfaces with charge-regulated patches are studied using non-linear Poisson-Boltzmann theory. Using a mode expansion to solve the non-linear problem efficiently,…
Phase diagrams of colloidal spheres with a constant zeta-potential
Frank Smallenburg, Niels Boon, Maarten Kater +2
We study suspensions of colloidal spheres with a constant zeta-potential within Poisson-Boltzmann theory, quantifying the discharging of the spheres with increasing colloid density…