Theoretical and numerical study of the phase diagram of patchy colloids: ordered and disordered patch arrangements
arXiv:0802.2466 · doi:10.1063/1.2888997
Abstract
We report theoretical and numerical evaluations of the phase diagram for a model of patchy particles. Specifically we study hard-spheres whose surface is decorated by a small number f of identical sites ("sticky spots'') interacting via a short-range square-well attraction. We theoretically evaluate, solving the Wertheim theory, the location of the critical point and the gas-liquid coexistence line for several values of f and compare them to results of Gibbs and Grand Canonical Monte Carlo simulations. We study both ordered and disordered arrangements of the sites on the hard-sphere surface and confirm that patchiness has a strong effect on the phase diagram: the gas-liquid coexistence region in the temperature-density plane is significantly reduced as f decreases. We also theoretically evaluate the locus of specific heat maxima and the percolation line.
preprint, 32 pages, 6 figures, 3 tables, J. Chem. Phys. in press
References in corpus (7)
- Phase diagram of patchy colloids: towards empty liquids
- Colloidal Gels: Equilibrium and Non-Equilibrium Routes
- Self-Assembly of Patchy Particles into Polymer Chains: A Parameter-Free Comparison between Wertheim Theory and Monte Carlo Simulation
- Reversible self-assembly of patchy particles into monodisperse icosahedral clusters
- On the possibility of extending the Nore-Frenkel generalized law of correspondent states to non-isotropic patchy interactions
- Slow dynamics in a primitive tetrahedral network model
- A spherical model with directional interactions: I. Static properties
Cited by in corpus (18)
- Phase diagrams of binary mixtures of patchy colloids with distinct numbers of patches: The network fluid regime
- Equilibrium gels of limited valence colloids
- Simulating the chromatin mediated phase separation of model proteins with multiple domains
- Properties of patchy colloidal particles close to a surface: a Monte Carlo and density functional study
- Nonequilibrium growth of patchy-colloid networks on substrates
- Unusual liquid phases for indented colloids with depletion interactions
- Microscopic interactions and emerging elasticity in model soft particulate gels
- Nonequilibrium self-organization of colloidal particles on substrates: adsorption, relaxation, and annealing
- Brownian cluster dynamics with short range patchy interactions. Its application to polymers and step-growth polymerization
- Percolation in binary mixtures of linkers and particles: chaining {\it {vs}} branching
- Coarse-grained depletion potentials for anisotropic colloids: application to lock-and-key systems
- Dynamics of equilibrium linked colloidal gels
- Controlling morphology in hybrid isotropic/patchy particle assemblies
- Wertheim and Bjerrum-Tani-Henderson theories for associating fluids: a critical assessment
- Characterization and Efficient Monte Carlo Sampling of Disordered Microphases
- Phase Behavior of the Patchy Colloids Confined in the Patchy Porous Media
- Entropy-Driven Phase Transitions in Colloidal Systems
- Behaviour of the model antibody fluid constrained by rigid spherical obstacles: effects of the obstacle-antibody binding