title: Hydrodynamic interactions in active colloidal crystal microrheology.
abstract: In dense colloids it is commonly assumed that hydrodynamic interactions do not play a role. However, a found theoretical quantification is often missing. We present computer simulations that are motivated by experiments where a large colloidal particle is dragged through a colloidal crystal. To qualify the influence of long-ranged hydrodynamics, we model the setup by conventional Langevin dynamics simulations and by an improved scheme with limited hydrodynamic interactions. This scheme significantly improves our results and allows to show that hydrodynamics strongly impacts the development of defects, the crystal regeneration, as well as the jamming behavior.
authors.affiliation: Institute for Computational Physics, University of Stuttgart, Pfaffenwaldring 27, D-70569 Stuttgart, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Weeber
authors.forename: J
authors.initials: J
authors.lastname: Harting
mesh_terms: D000465:Algorithms; D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D057446:Hydrodynamics; D044085:Microfluidics / Q000379:methods*; D008956:Models, Chemical; D008958:Models, Molecular
chemical_list: D003102:Colloids