92 bead colloids are used to study the self-assembly of large surface anistropic particles.

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This paper presents a new method for fluid simulation based on Stochastic Rotation Dynamics. The SRD model relies on a particle-based representation, but does not consider incompressibility. We generalize this model by introducing additional computation steps in order to handle this type of behavior, and also two-way coupling between the fluid and immersed objects. As a proof of concept, our method is implemented on the CPU to produce different types of simulations such as dam-break flood, falling droplets and mixing of two fluids.

The aggregation of oppositely charged colloids, usually denoted as heteroaggregation, is often used in colloidal processing, for which a precise control of the basic mechanisms of aggregate formation is of crucial importance. A promising way to achieve a better degree of control is to guide heteroaggregation by imposing geometric constraints. Here, we consider this possibility by simulating the heteroaggregation of two oppositely charged suspensions which are initially separated and then put into contact through a planar interface. Our Brownian dynamics simulations show that this type of heteroaggregation allows the formation of mixed films whose thickness can be controlled by tuning the interactions between the particles or by changing the colloidal concentration in the initial suspensions. The dependence of the type of crystalline order in these films on these parameters is also analyzed.