Classical dynamical density functional theory: from fundamentals to applications

M te Vrugt, H Löwen, R Wittkowski - Advances in Physics, 2020 - Taylor & Francis
Classical dynamical density functional theory (DDFT) is one of the cornerstones of modern
statistical mechanics. It is an extension of the highly successful method of classical density …

How to derive a predictive field theory for active Brownian particles: a step-by-step tutorial

M Te Vrugt, J Bickmann… - Journal of Physics …, 2023 - iopscience.iop.org
The study of active soft matter has developed into one of the most rapidly growing areas of
physics. Field theories, which can be developed either via phenomenological …

From a microscopic inertial active matter model to the Schrödinger equation

M Te Vrugt, T Frohoff-Hülsmann, E Heifetz… - Nature …, 2023 - nature.com
Active field theories, such as the paradigmatic model known as 'active model B+', are simple
yet very powerful tools for describing phenomena such as motility-induced phase …

Orientation-dependent propulsion of active Brownian spheres: from self-advection to programmable cluster shapes

S Bröker, J Bickmann, M Te Vrugt, ME Cates… - Physical Review Letters, 2023 - APS
Applications of active particles require a method for controlling their dynamics. While this is
typically achieved via direct interventions, indirect interventions based, eg, on an orientation …

Perspective: New directions in dynamical density functional theory

M Te Vrugt, R Wittkowski - Journal of Physics: Condensed Matter, 2022 - iopscience.iop.org
Classical dynamical density functional theory (DDFT) has become one of the central
modeling approaches in nonequilibrium soft matter physics. Recent years have seen the …

Derivation and analysis of a phase field crystal model for a mixture of active and passive particles

M te Vrugt, MP Holl, A Koch… - … and Simulation in …, 2022 - iopscience.iop.org
We discuss an active phase field crystal (PFC) model that describes a mixture of active and
passive particles. First, a microscopic derivation from dynamical density functional theory is …

Jerky active matter: a phase field crystal model with translational and orientational memory

M Te Vrugt, J Jeggle, R Wittkowski - New Journal of Physics, 2021 - iopscience.iop.org
Most field theories for active matter neglect effects of memory and inertia. However, recent
experiments have found inertial delay to be important for the motion of self-propelled …

Topological fine structure of smectic grain boundaries and tetratic disclination lines within three-dimensional smectic liquid crystals

PA Monderkamp, R Wittmann, M Te Vrugt… - Physical Chemistry …, 2022 - pubs.rsc.org
Observing and characterizing the complex ordering phenomena of liquid crystals subjected
to external constraints constitutes an ongoing challenge for chemists and physicists alike. To …

Active Brownian particles in external force fields: field-theoretical models, generalized barometric law, and programmable density patterns

J Bickmann, S Bröker, M Te Vrugt, R Wittkowski - Physical Review E, 2023 - APS
We investigate the influence of external forces on the collective dynamics of interacting
active Brownian particles in two as well as three spatial dimensions. Via explicit coarse …

[HTML][HTML] Relations between angular and Cartesian orientational expansions

M te Vrugt, R Wittkowski - AIP Advances, 2020 - pubs.aip.org
Orientational expansions, which are widely used in natural sciences, exist in angular and
Cartesian forms. Although these expansions are orderwise equivalent, it is difficult to relate …