A. P. Philipse

Model independent determination of colloidal silica size distributions via analytical ultracentrifugation (2008)

Planken, K.L., Kuipers, B.W.M., Philipse, A.P.

We report a method to determine the particle size distribution of small colloidal silica spheres via analytical ultracentrifugation and show that the average particle size, variance, standard...

Magnetic silica colloids for catalysis (2007)

Claesson, E.M., Mehendale, N.C., Koten, G. Van, Philipse, A.P.

Monodisperse magnetizable colloidal silica particles in a stable dispersion have been functionalized with a homogeneous catalyst: a PCP–pincer Pd-complex. In a proof-of-principle experiment we...

Measurement of the zero-field magnetic dipole moment of magnetizable colloidal silica spheres (2007)

Claesson, E.M., Erné, B.H., Bakelaar, I.A., Kuipers, B.W.M., Philipse, A.P.

The magnetic properties of dispersions of magnetic silica microspheres have been investigated by measuring the magnetization curves and the complex magnetic susceptibility as a function of frequency...

Thiol-functionalized silica colloids, grains, and membranes for irreversible adsorption of metal(oxide) nanoparticles (2007)

Claesson, E.M., Philipse, A.P.

Thiol-functionalization is described for silica surfaces from diverging origin, including commercial silica nanoparticles and Stöber silica as well as silica structures provided by porous glasses...

Thermodynamically Stable Pickering Emulsions (2007)

Sacanna, S., Kegel, W.K., Philipse, A.P.

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 range of 30–150...

Dipolar structures in magnetite ferrofluids studied with small-angle neutron scattering with and without applied magnetic field (2007)

Klokkenburg, Mark, Erné, B.H., Wiedenmann, A., Petukhov, A.V., Philipse, A.P.

Field-induced structure formation in a ferrofluid with well-defined magnetite nanoparticles with a permanent magnetic dipole moment was studied with small-angle neutron scattering (SANS) as a...

Rotational dynamics of magnetic silica spheres studied by measuring the complex magnetic susceptibility (2007)

Claesson, E.M., Erné, B.H., Philipse, A.P.

The weak permanent magnetic dipole moment of cobalt ferrite-doped colloidal silica spheres was increased by exposure to a saturating magnetic field. The resulting change of the rotational dynamics of...

Observation of a shape-dependent density maximum in random packings and glasses of colloidal silica ellipsoids (2007)

Sacanna, S., Rossi, L., Wouterse, A., Philipse, A.P.

We have measured the random packing density of monodisperse colloidal silica ellipsoids with a well-defined shape, gradually deviating from a sphere shape up to prolates with aspect ratios of about...

Effect of particle shape on the density and microstructure of random packings (2007)

Wouterse, A., Williams, S.R., Philipse, A.P.

We study the random packing of non-spherical particles by computer simulation to investigate the effect of particle shape and aspect ratio on packing density and microstructure. Packings of cut...

Spontaneous oil-in-water emulsification induced by charge-stabilized dispersions of various inorganic colloids (2007)

Sacanna, S., Kegel, W.K., Philipse, A.P.

Charge-stabilized dispersions of inorganic colloids are shown to induce spontaneous emulsification of hydrophobic (TPM) molecules to stable oil-in-water emulsions, with monodisperse, mesoscopic oil...

A generic single-step synthesis of monodisperse core/shell colloids based on spontaneous pickering emulsification (2007)

Sacanna, S., Philipse, A.P.

Quantitative Real-Space analysis of self-assembled structures of magnetic dipolar colloids (2006)

Klokkenburg, Mark, Dullens, R.P.A., Kegel, W.K., Erné, B.H., Philipse, A.P.

Polymer-in-a-silica-crust membranes: macroporous materials with tunable surface functionality (2006)

Urmenyi, A.M., Philipse, A.P., Lammertink, R.G.H, Wessling, M.

In situ imaging of Field-induced hexagonal columns in magnetite ferrofluids (2006)

Klokkenburg, Mark, Erné, B.H., Meeldijk, J.D., Wiedenmann, A., Petukhov, A.V., Dullens, R.P.A., ...

Geometrical cluster ensemble analysis of random sphere packings (2006)

Wouterse, A., Philipse, A.P.

Preparation and properties of monodisperse latex spheres with controlled magnetic moment for field-induced colloidal crystallization and (dipolar) chain formation (2006)

Sacanna, S., Philipse, A.P.

Thermal motion of magnetic iron nano particles in a frozen solvent (2005)

Klokkenburg, Mark, Erne, B.H., Philipse, A.P.

Stability of mixtures of charged silica, silica-alumina, and magnetite colloids (2005)

Viota, J.L., Rasa, M., Sacanna, S., Philipse, A.P.

Preparation and properties of colloidal iron dispersions (2005)

Butter, Karen, Kassapidou, K., Vroege, G.J., Philipse, A.P.

On the caging of two- and three-dimensional hard spheres. (2005)

Wouterse, A., Plapp, M., Philipse, A.P.

Monodisperse DNA restriction fragments I. Synthesis and charcterization (2005)

Planken, K.L., Koenderink, G.H., Roozendaal, R., Philipse, A.P.

Monodisperse DNA restriction fragments II. Sedimentation velocity and equilibrium experiments (2005)

Koenderink, G.H., Planken, K.L., Roozendaal, R., Philipse, A.P.

Monodisperse magnetizable composite silica spheres with tunable dipolar interactions (2005)

Claesson, E.M., Philipse, A.P.

Simulation of random packing of binary sphere mixtures by mechanical contraction (2005)

Lange Kristiansen, K. De, Wouterse, A., Philipse, A.P.

Macroscopic electric field and osmotic pressure in ultracentrifugal sedimentation-diffusion equilibria (2005)

Rasa, M.V., Erne, B.H., Zoetekouw, Bastiaan, Philipse, A.P.

Rotational and translational diffusion of fluorocarbon tracer spheres in semidilute xanthan solutions (2004)

Koenderink, G.H., Sacanna, S., Philipse, A.P.

Rotational dynamics of colloidal spheres probed with fluorescence recovery after photobleaching (2004)

Lettinga, M.P., Koenderink, G.H., Kuipers, B.W.M., Bessels, E., Philipse, A.P.

Evidence for a macroscopic electric field in the sedimentation profiles of charged colloids (2004)

Rasa, M., Philipse, A.P.

Heteroaggregation, repeptization and stability in mixtures of oppositely charged colloids (2004)

Rasa, M.V., Philipse, A.P., Meeldijk, J.D.

Microemulsion synthesis of fluorinated latex spheres (2004)

Sacanna, S., Koenderink, G.H., Philipse, A.P.

Remarks on the Donnan condenser in the sedimentation diffusion equilibrium of charged colloids (2004)

Philipse, A.P.

Morphology and kinetics of phase separating transparent Xanthan-colloid mixtures (2003)

Koenderink, G.H., Philipse, A.P., Tuinier, R., Lekkerkerker, H.N.W.

Caging effects in amorphous hard-sphere solids (2003)

Philipse, A.P.

Direct observation of dipolar chains in iron ferrofluids by cryogenic electron microscopy (2003)

Butter, Karen, Bomans, P.H., Frederik, P.M., Vroege, G.J., Philipse, A.P.

Vertical concentration profiles in colloidal fluids measured by FTIR-ATR spectroscopy (2003)

Erne, B.H., Kuipers, B.W.M., Visser, T., Philipse, A.P.

Random packings of spheres and spherocylinders simulated by mechanical contraction (2003)

Williams, S.R., Philipse, A.P.

On the validity of Stokes-Einstein-Debye relations for rotational diffusion in colloidal suspensions (2003)

Koenderink, G.H., Zhang, H., Lettinga, M.P., Philipse, A.P., Naegele, G.

Sedimentation-diffusion profiles and layered sedimentation of charged colloids at low ionic strength (2003)

Philipse, A.P., Koenderink, G.H.

Preparation and properties of starch-based colloidal microgels (2002)

Dziechciarek, Y., Philipse, A.P.

Novel starch microgels were prepared by emulsion cross-linking and characterized with respect to shape, volume, and mass density. Starch microgels appear to be negatively charged (similar to-50 mV),...

Preparation and properties of starch-based colloidal microgels (2002)

Dziechciarek, Y., Philipse, A.P.

Susceptibility measurements on a fractionated aggregate-free ferrofluid (2002)

Ewijk, G.A. Van, Vroege, G.J., Philipse, A.P.

Atomic Force Microscopy and Magnetic Force Microscopy Study of Model Colloids (2002)

Rasa, M., Lekkerkerker, H.N.W., Philipse, A.P.

Monodisperse magnetic iron colloids grafted with polyisobutene: a model system for Fischer-Tropsch catalysts? (2002)

Goossens, A., Jongh, L.J. De, Butter, Karen, Philipse, A.P., Craje, M.W.J.

Magnetic colloids from magnetotactic bacteria: Chain formation and colloidal stability (2002)

Philipse, A.P.

Thermodynamic (in)stability of ferrofluid-polymer mixtures (2002)

Ewijk, G.A. Van, Vroege, G.J., Kuipers, B.W.M., Philipse, A.P.

Rotational dynamics of charged colloidal spheres; role of particle interactions (2002)

Koenderink, G.H., Lettinga, M.P., Philipse, A.P.

Synthesis and properties of iron ferrofluids (2002)

Butter, Karen, Philipse, A.P., Vroege, G.J.

Scanning probe microscopy on magnetic colloidal particles (2002)

Rasa, M., Philipse, A.P.

Fluorous derivatives of [Rh(COD)(dppe)]BX4 (X=F, Ph): synthesis, physical studies and applications in catalytic hydrogenation of 1-alkenes and 4-alkenes (2002)

Wolf, E. De, Spek, A.L., Kuipers, B.W.M., Philipse, A.P., Meeldijk, J.D., Bomans, P.H.H., ...

Fluorous derivatives of 1,2-bis(diphenylphosphino)ethane (dppe) (1), containing a para-(1H,1H,2H,2H-perfluoroalkyl)silyl function, were used in the synthesis of fluorous derivatives of...

The synthesis and Magnetic properties of nanosized hematite (α-Fe2O3) particles (2002)

Raming, T.P., Winnubst, A.J.A., Kats, C.M. Van, Philipse, A.P.

The synthesis and magnetic properties of nanosized hematite (a-Fe2O3) particles (2002)

Raming, T.P., Winnubst, A.J.A., Kats Van, C.M., Philipse, A.P.

The synthesis of nanosized superparamagnetic hematite particles by dissolving ferric salts in hydrochloric acid and heating at 100°C is described. A hydrolysis reaction causes the formation of...

caging of a d-demensional sphere and its relevance for the random dense sphere packing (2001)

Kollmann, M., Philipse, A.P.

Rotational tracer diffusion in binary colloidal spheres mixtures (2001)

Koenderink, G.H., Zhang, H., Lettinga, M.P., Naegele, G., Philipse, A.P.

Self-diffusion and sedimentation of tracer spheres in(semi)dilute dispersions of rigid colloidal rods (2000)

Koenderink, G.H., Philipse, A.P.

Depletion-induced crystallization in colloidal rod-sphere mixtures (1999)

Koenderink, G.H., Vliegenthart, G.A., Blaaderen, A. Van, Philipse, A.P., Lekkerkerker, H.N.W.

We report the observation of depletion-induced phase separation in a mixture of colloidal silica spheres and colloidal silica rods with light microscopy and confocal scanning laser microscopy. We...

Linear viscoelasticity of an inverse ferrofluid (1999)

Gans, B.J. De, Blom, C., Philipse, A.P., Mellema, J.

Aqueous dispersions of colloidal boehmite: structure, dynamics and yield stress of rod gels (1998)

Wierenga, A., Philipse, A.P., Lekkerkerker, H.N.W.

Sedimentation of bidisperse, uncharged colloidal sphere suspensions: Influence of viscosity and irregular surfaces (1996)

Philipse, A.P., Lekkerkerker, H.N.W.

Preparation and properties of organic dispersions of monodisperse silica receptor colloids grafted with calixarene derivatives or alkyl chains (1996)

Nechifor, A.M., Philipse, A.P., Jong De, F., Egberink, R.J.M., Reinhoudt, D.N.

We introduce cation-selective receptor colloids consisting of a monodisperse inorganic silica core grafted with an organic layer containing calixarene receptor molecules. The surface layer is...

Phase behavior of aqueous dispersions of colloidal boehmite rods (1994)

Buining, P.A., Philipse, A.P., Lekkerkerker, H.N.W.

We report the phase behavior of aqueous dispersions containing rodlike boehmite particles with two different average lengths, 130 and 280 nm, with length-to-width ratios of approximately 8 and 20,...

Preparation of (non-)aqueous dispersins of colloidal boehmite needles (1993)

Buining, P.A., Pathmamanoharan, C., Philipse, A.P., Lekkerkerker, H.N.W.

A novel hydrothermal alkoxide method is presented for the preparation of stable, aqueousdispersions of fairly monodisperse, charged colloidal boehmite needles. A polymer coating procedure for the...

Preparation and properties of dispersions of colloidal boehmite rods (1993)

Buining, P.A., Philipse, A.P., Pathmamanoharan, C., Lekkerkerker, H.N.W.

Dispersions of colloidal boehmite (y-AlOOH) rods (of controllable length) are prepared from alkoxide precursors. A polyisobutene grafting procedure leads to sterically stabilized dispersions. In the...