Low-shear viscosity of isotropic dispersions of (Brownian) rods and fibres; a review of theory and experiments

AM Wierenga, AP Philipse - Colloids and Surfaces A: Physicochemical and …, 1998 - Elsevier
A review is presented of the low-shear rheology of isotropic rod dispersions. Various theoretical
descriptions are compared, and trends in experiments on a variety of rods and rodlike …

Direct observation of dipolar chains in iron ferrofluids by cryogenic electron microscopy

K Butter, PHH Bomans, PM Frederik, GJ Vroege… - Nature materials, 2003 - nature.com
A key issue in research on ferrofluids (dispersions of magnetic colloids) is the effect of dipolar
interactions on their structure and phase behaviour 1 , 2 , which is not only important for …

Magnetic silica dispersions: preparation and stability of surface-modified silica particles with a magnetic core

AP Philipse, MPB Van Bruggen, C Pathmamanoharan - Langmuir, 1994 - ACS Publications
Preparation and properties are discussed of a novel magnetic dispersion, containing surface-modified
silica colloids with a core of single-domain magnetite particles. The underlying …

Random packings of spheres and spherocylinders simulated by mechanical contraction

SR Williams, AP Philipse - Physical Review E, 2003 - APS
We introduce a simulation technique for creating dense random packings of hard particles.
The technique is particularly suited to handle particles of different shapes. Dense amorphous …

Sedimentation–diffusion profiles and layered sedimentation of charged colloids at low ionic strength

AP Philipse, GH Koenderink - Advances in colloid and interface science, 2003 - Elsevier
We report the formation of strongly inflated sedimentation–diffusion concentration profiles
for charged monodisperse colloidal spheres in absolute ethanol. Various additional …

Preparation and properties of nonaqueous model dispersions of chemically modified, charged silica spheres

AP Philipse, A Vrij - Journal of Colloid and Interface Science, 1989 - Elsevier
We describe the preparation and properties of a novel type of stable dispersion in weakly
polar organic solvents of monodisperse, charged silica spheres coated with 3-…

Cubic crystals from cubic colloids

L Rossi, S Sacanna, WTM Irvine, PM Chaikin, DJ Pine… - Soft Matter, 2011 - pubs.rsc.org
We have studied the crystallization behavior of colloidal cubes by means of tunable depletion
interactions. The colloidal system consists of novel micron-sized cubic particles prepared …

The synthesis and magnetic properties of nanosized hematite (α-Fe2O3) particles

TP Raming, AJA Winnubst, CM van Kats… - Journal of Colloid and …, 2002 - Elsevier
The synthesis of nanosized superparamagnetic hematite particles by dissolving ferric salts
in hydrochloric acid and heating at 100C is described. A hydrolysis reaction causes the …

The random contact equation and its implications for (colloidal) rods in packings, suspensions, and anisotropic powders

AP Philipse - Langmuir, 1996 - ACS Publications
The experimentally observed asymptotic scaling ϕ(L/D) = constant, for the random packing
volume fraction (ϕ) of rods with high aspect ratio (L/D), is shown to be the consequence of …

Thermodynamically stable pickering emulsions

S Sacanna, WK Kegel, AP Philipse - Physical review letters, 2007 - APS
We show that under appropriate conditions, mixtures of oil, water, and nanoparticles form
thermodynamically stable oil-in-water emulsions with monodisperse droplet diameters in the …