56 citations · 769 across the 34 of their papers we have counts for
37 papers
Machine-learned topological transport of magnetic colloids
Sebastian Wohlrab, Aneena Rinu Perayil, Piotr Kuświk +6
By modulating the orientation of a uniform magnetic field it is possible to transport magnetic microparticles above magnetic patterns. In periodic patterns, driving control loops t…
Superadiabatic Dynamical Density Functional Theory for One-Dimensional Brownian Hard-Rod Fluids
Jens Weimar, Daniel de las Heras, Martin Oettel
We study the relaxation dynamics of a one-dimensional system of hard rods at the level of one-body fields using superadiabatic dynamical density functional theory, and compare the…
Biaxial nematics and nematic-nematic demixing in polydisperse mixtures of hard board-like particle fluids
Yuri Martinez-Raton, Daniel de las Heras, Enrique Velasco
We study the bulk phase behavior of a polydisperse liquid crystal fluid made of biaxial boards with restricted orientations using both fundamental measure theory and Monte Carlo co…
Topologically controlled synthesis of active colloidal bipeds
Jonas Elschner, Farzaneh Farrokhzad, Piotr Kuświk +6
Topological growth control allows to produce a narrow distribution of outgrown colloidal rods with defined and adjustable length. We use an external magnetic field to assemble para…
Neural force functional for non-equilibrium many-body colloidal systems
Toni Zimmerman, Florian Sammüller, Sophie Hermann +2
We combine power functional theory and machine learning to study non-equilibrium overdamped many-body systems of colloidal particles at the level of one-body fields. We first sampl…
Neural functional theory for inhomogeneous fluids: Fundamentals and applications
Florian Sammüller, Sophie Hermann, Daniel de las Heras +1
We present a hybrid scheme based on classical density functional theory and machine learning for determining the equilibrium structure and thermodynamics of inhomogeneous fluids. T…
Effect of sample height and particle elongation in the sedimentation of colloidal rods
Tobias Eckert, Matthias Schmidt, Daniel de las Heras
We study theoretically the effect of a gravitational field on the equilibrium behaviour of a colloidal suspension of rods with different length-to-width aspect ratios. The bulk pha…
Noether-Constrained Correlations in Equilibrium Liquids
Florian Sammüller, Sophie Hermann, Daniel de las Heras +1
Liquid structure carries deep imprints of an inherent thermal invariance against a spatial transformation of the underlying classical many-body Hamiltonian. At first order in the t…
Reduced-variance orientational distribution functions from torque sampling
Johannes Renner, Matthias Schmidt, Daniel de las Heras
We introduce a method to sample the orientational distribution function in computer simulations. The method is based on the exact torque balance equation for classical many-body sy…
Sedimentation path theory for mass-polydisperse colloidal systems
Tobias Eckert, Matthias Schmidt, Daniel de las Heras
Both polydispersity and the presence of a gravitational field are inherent to essentially any colloidal experiment. While several theoretical works have focused on the effect of po…
Inhomogeneous steady shear dynamics of a three-body colloidal gel former
Florian Sammüller, Daniel de las Heras, Matthias Schmidt
We investigate the stationary flow of a colloidal gel under an inhomogeneous external shear force using adaptive Brownian dynamics simulations. The interparticle forces are derived…
Colloidal transport in twisted lattices of optical tweezers
Nex C. X. Stuhlmüller, Thomas M. Fischer, Daniel de las Heras
We simulate the transport of colloidal particles driven by a static and homogeneous drift force, and subject to the optical potential created by two lattices of optical tweezers. T…
Structural nonequilibrium forces in driven colloidal systems
Nex C. X. Stuhlmüller, Tobias Eckert, Daniel de las Heras +1
We identify a structural one-body force field that sustains spatial inhomogeneities in nonequilibrium overdamped Brownian many-body systems. The structural force is perpendicular t…
Colloidal topological insulators
Johannes Loehr, Daniel de las Heras, Adam Jarosz +8
Topological insulators insulate in the bulk but exhibit robust conducting edge states protected by the topology of the bulk material. Here, we design a colloidal topological insula…
Better than counting: Density profiles from force sampling
Daniel de las Heras, Matthias Schmidt
Calculating one-body density profiles in equilibrium via particle-based simulation methods involves counting of events of particle occurrences at (histogram-resolved) space points.…
Velocity gradient power functional for Brownian dynamics
Daniel de las Heras, Matthias Schmidt
We present an explicit and simple approximation for the superadiabatic excess (over ideal gas) free power functional, admitting the study of the nonequilibrium dynamics of overdamp…
The role of sample height in the stacking diagram of colloidal mixtures under gravity
Thomas Geigenfeind, Daniel de las Heras
Bulk phase separation is responsible for the occurrence of stacks of different layers in sedimentation of colloidal mixtures. A recently proposed theory (de las Heras and Schmidt 2…
Topologically protected colloidal transport above a square magnetic lattice
Daniel de las Heras, Johannes Loehr, Michael Loenne +1
We theoretically study the motion of magnetic colloidal particles above a magnetic pattern and compare the predictions with Brownian dynamics simulations. The pattern consists of a…
Percolation in binary and ternary mixtures of patchy colloids
Felix Seiferling, Daniel de las Heras, Margarida M. Telo da Gama
We investigate percolation in binary and ternary mixtures of patchy colloidal particles theoretically and using Monte Carlo simulations. Each particle has three identical patches,…
Particle Conservation in Dynamical Density Functional Theory
Daniel de las Heras, Joseph M. Brader, Andrea Fortini +1
We present the exact adiabatic theory for the dynamics of the inhomogeneous density distribution of a classical fluid. Erroneous particle number fluctuations of dynamical density f…
Temperature (de)activated patchy colloidal particles
Daniel de las Heras, Margarida M. Telo da Gama
We present a new model of patchy particles in which the interaction sites can be activated or deactivated by varying the temperature of the system. We study the thermodynamics of t…
Capillary and winding transitions in a confined cholesteric liquid crystal
Daniel de las Heras, Enrique Velasco, Yuri Martínez-Ratón
We consider a Lebwohl-Lasher model of chiral particles confined in a planar cell (slit pore) with different boundary conditions, and solve it using mean-field theory. The phase beh…
Ordering in granular rod monolayers driven far from thermodynamic equilibrium
Thomas Müller, Daniel de las Heras, Ingo Rehberg +1
The orientational order in vertically agitated granular rod monolayers is investigated experimentally and compared quantitatively with equilibrium Monte Carlo simulations and densi…
Confinement of two-dimensional rods in slit pores and square cavities
Thomas Geigenfeind, Sebastian Rosenzweig, Matthias Schmidt +1
Using Monte Carlo simulation, we analyse the behaviour of two-dimensional hard rods in four different types of geometric confinement: (i) a slit pore where the particles are confin…