471 citations · 4k across the 72 of their papers we have counts for
6 papers · 1 filter
The self-propelled Brownian spinning top: dynamics of a biaxial swimmer at low Reynolds numbers
Raphael Wittkowski, Hartmut Löwen
Recently, the Brownian dynamics of self-propelled (active) rod-like particles was explored to model the motion of colloidal microswimmers, catalytically-driven nanorods, and bacter…
Microscopic and macroscopic theories for the dynamics of polar liquid crystals
Raphael Wittkowski, Hartmut Löwen, Helmut R. Brand
We derive and analyze the dynamic equations for polar liquid crystals in two spatial dimensions in the framework of classical dynamical density functional theory (DDFT). Translatio…
Dynamical density functional theory for colloidal particles with arbitrary shape
Raphael Wittkowski, Hartmut Löwen
Starting from the many-particle Smoluchowski equation, we derive dynamical density functional theory for Brownian particles with an arbitrary shape. Both passive and active (self-p…
Brownian dynamics of a self-propelled particle in shear flow
Borge ten Hagen, Raphael Wittkowski, Hartmut Löwen
Brownian dynamics of a self-propelled particle in linear shear flow is studied analytically by solving the Langevin equation and in simulation. The particle has a constant propagat…
Polar liquid crystals in two spatial dimensions: the bridge from microscopic to macroscopic modeling
Raphael Wittkowski, Hartmut Löwen, Helmut R. Brand
Two-dimensional polar liquid crystals have been discovered recently in monolayers of anisotropic molecules. Here, we provide a systematic theoretical description of liquid-crystall…
Stability of liquid crystalline phases in the phase-field-crystal model
Cristian Vasile Achim, Raphael Wittkowski, Hartmut Löwen
The phase-field-crystal model for liquid crystals is solved numerically in two spatial dimensions. This model is formulated with three position-dependent order parameters, namely t…