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- J A van Meel, B Charbonneau, A Fortini, P Charbonneau
- Physical review. E, Statistical, nonlinear, and…
- 2009

We recently found that crystallization of monodisperse hard spheres from the bulk fluid faces a much higher free-energy barrier in four than in three dimensions at equivalent supersaturation, due to the increased geometrical frustration between the simplex-based fluid order and the crystal [J. A. van Meel, D. Frenkel, and P. Charbonneau, Phys. Rev. E 79,… (More)

- Andrea Fortini, Matthias Schmidt, Marjolein Dijkstra
- Physical review. E, Statistical, nonlinear, and…
- 2006

Using Gibbs ensemble Monte Carlo simulations and density functional theory we investigate the fluid-fluid demixing transition in inhomogeneous colloid-polymer mixtures confined between two parallel plates with separation distances between one and ten colloid diameters covering the complete range from quasi-two-dimensional to bulklike behavior. We use the… (More)

- Andrea Fortini, Eduardo Sanz, Marjolein Dijkstra
- Physical review. E, Statistical, nonlinear, and…
- 2008

We systematically study the relationship between equilibrium and nonequilibrium phase diagrams of a system of short-ranged attractive colloids. Using Monte Carlo and Brownian dynamics simulations we find a window of enhanced crystallization that is limited at high interaction strength by a slowing down of the dynamics and at low interaction strength by the… (More)

- Marjolein Dijkstra, René van Roij, Roland Roth, Andrea Fortini
- Physical review. E, Statistical, nonlinear, and…
- 2006

We study a model suspension of sterically stabilized colloidal particles and nonadsorbing ideal polymer coils, both in bulk and adsorbed against a planar hard wall. By integrating out the degrees of freedom of the polymer coils, we derive a formal expression for the effective one-component Hamiltonian of the colloids. We employ an efficient Monte Carlo… (More)

- Alexandra Schweikart, Andrea Fortini, Alexander Wittemann, Matthias Schmidt, Andreas Ferya
- 2012

We created hierarchically ordered structures of nanoparticles on smooth plan ar hydrophilic substrates by drying colloidal dispersions in confinement under macroscopic stamps with microscopically wrinkled surfaces. Experiments were carried out with model nano-particle suspensions that possess high colloidal stability and mono-dispersity. The structures… (More)

- Andrea Fortini, Marjolein Dijkstra
- Journal of physics. Condensed matter : an…
- 2006

We study the phase behaviour of hard spheres confined between two parallel hard plates using extensive computer simulations. We determine the full equilibrium phase diagram for arbitrary densities and plate separations from one to five hard-sphere diameters using free energy calculations. We find a first-order fluid-solid transition, which corresponds to… (More)

- Andrea Fortini
- Physical review. E, Statistical, nonlinear, and…
- 2012

A mixture of hard-sphere particles and model emulsion droplets is studied with a Brownian dynamics simulation. We find that the addition of nonwetting emulsion droplets to a suspension of pure hard spheres can lead to both gas-liquid and fluid-solid phase separations. Furthermore, we find a stable fluid of hard-sphere clusters. The stability is due to the… (More)

- Claudia S. Wagner, Andrea Fortini, Eddie Hofmann, Thomas Lunkenbein, Matthias Schmidth, Alexander Wittemann
- 2012

The interest in hollow structures with defined porosities has promoted the fabrication of colloidosomes, i.e. capsules from spherical colloids. The hierarchically organized architectures were built from microparticles 01' multiple layers of nanoparticles to make sure that the capsule walls were sufficiently robust. Herein, we present [or the first time a… (More)

- Andrea Fortini, Ignacio Martín-Fabiani, +6 authors Richard P Sear
- Physical review letters
- 2016

In simulations and experiments, we study the drying of films containing mixtures of large and small colloidal particles in water. During drying, the mixture stratifies into a layer of the larger particles at the bottom with a layer of the smaller particles on top. We developed a model to show that a gradient in osmotic pressure, which develops dynamically… (More)

- Hai Pham Van, Andrea Fortini, Matthias Schmidt
- Physical review. E
- 2016

We investigate the behavior of a mixture of asymmetric colloidal dumbbells and emulsion droplets by means of kinetic Monte Carlo simulations. The evaporation of the droplets and the competition between droplet-colloid attraction and colloid-colloid interactions lead to the formation of clusters built up of colloid aggregates with both closed and open… (More)