Particle dynamics
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Additive rheology of complex granular flows Open
Granular flows are omnipresent in nature and industrial processes, but their rheological properties such as apparent friction and packing fraction are still elusive when inertial, cohesive and viscous interactions occur between particles i…
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The Splashback Radius of Halos from Particle Dynamics. I. The SPARTA Algorithm Open
Motivated by the recent proposal of the splashback radius as a physical boundary of dark-matter halos, we present a parallel computer code for Subhalo and PARticle Trajectory Analysis ( Sparta ). The code analyzes the orbits of all simulat…
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Tumbling of asymmetric microrods in a microchannel flow Open
We describe results of measurements of the orientational motion of glass microrods in a microchannel flow, following the orientational motion of particles with different shapes. We determine how the orientational dynamics depends on the sh…
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Direct Evidence of Void-Induced Structural Relaxations in Colloidal Glass Formers Open
Particle dynamics in supercooled liquids are often dominated by stringlike motions in which lines of particles perform activated hops cooperatively. The structural features triggering these motions, crucial in understanding glassy dynamics…
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Classical and quantum dynamics of a charged scalar particle in a background of two counterpropagating plane waves Open
We consider a scalar particle in a background formed by two\ncounter-propagating plane waves. Two cases are studied: i) dynamics at a\nmagnetic node and ii) zero initial transverse canonical momentum. The Lorentz\nand Klein-Gordon equation…
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Particle dynamics predicts shear rheology of soft particle glasses Open
International audience
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Identification of Student Character Values in Class X Particle Dynamics Materials Open
education, character education which aims to develop the ability of students to make good and bad decisions, maintain what is good and realize that goodness in everyday life wholeheartedly. This study aims to identify the impact that occur…
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LAT1 (SLC7A5) and CD98hc (SLC3A2) complex dynamics revealed by single-particle cryo-EM Open
Solute carriers are a large class of transporters that play key roles in normal and disease physiology. Among the solute carriers, heteromeric amino-acid transporters (HATs) are unique in their quaternary structure. LAT1–CD98hc, a HAT, tra…
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Dissipative particle dynamics and molecular dynamics simulations on mesoscale structure and proton conduction in a SPEEK/PVDF-g-PSSA membrane Open
The blend morphologies evolve from disordered small particles to a regular PVDF cluster network, which were connected by SPEEK cylindrical channels.
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Modeling of particle interaction dynamics in standing wave acoustic field Open
Interactions between fine particles (PM2.5) suspended in flue gas can be promoted via application of acoustic fields. This may lead to particle collision and agglomeration, thereby facilitating possible realization of PM2.5 abatement. The …
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Athermal rheology of weakly attractive soft particles Open
We study the rheology of a soft particulate system where the interparticle interactions are weakly attractive. Using extensive molecular dynamics simulations, we scan across a wide range of packing fractions (ϕ), attraction strengths (u), …
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Active Stokesian dynamics Open
Since its development, Stokesian dynamics has been a leading approach for the dynamic simulation of suspensions of particles at arbitrary concentrations with full hydrodynamic interactions. Although developed originally for the simulation …
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Glassy dynamics of dense particle assemblies on a spherical substrate Open
We study by molecular dynamics simulation a dense one-component system of particles confined on a spherical substrate. We more specifically investigate the evolution of the structural and dynamical properties of the system when changing th…
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Non-monotonic effect of confinement on the glass transition Open
The relaxation dynamics of glass forming liquids and their structure are influenced in the vicinity of confining walls. This effect has mostly been observed to be a monotonic function of the slit width. Recently, a qualitatively new behavi…
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Multipoint segmental repulsive potential for entangled polymer simulations with dissipative particle dynamics Open
A model is developed for simulating entangled polymers by dissipative particle dynamics (DPD) using the segmental repulsive potential (SRP). In contrast to previous SRP models that define a single-point interaction on each bond, the propos…
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Modified particle dynamics and thermodynamics in a traversable wormhole in bumblebee gravity Open
In this work, we analyze various phenomena influenced by the gravitational field in a bumblebee gravity solution, with a particular emphasis on a traversable wormhole for massless particle modes. Specifically, we calculate the index of ref…
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Joule-Thomson expansion with Barrow entropy and particle dynamics of charged Rastall-AdS black hole Open
In this study, we are interested in exploring the impact of Barrow entropy on Joule-Thomson expansion of Rastal charged-AdS black hole and then we explore the particle dynamics. We examine the manner in which the characteristics of inversi…
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Dynamics and stability of a concentric compound particle – a theoretical study Open
Particles confined in droplets are called compound particles. This work investigates the dynamics and stability of a concentric compound particle under external forces and imposed flows.
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Particles in Relativistic MHD Jets. I. Role of Jet Dynamics in Particle Acceleration Open
Relativistic jets from (supermassive) black holes are typically observed in nonthermal emission, caused by highly relativistic electrons. Here, we study the interrelation between three-dimensional (special) relativistic magnetohydrodynamic…
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“Dense diffusion” in colloidal glasses: short-ranged long-time self-diffusion as a mechanistic model for relaxation dynamics Open
Individual particle dynamics are monitored during the colloidal glass transition, using a novel size-jump algorithm to quench from liquid to glass.
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PySDM v1: particle-based cloud modeling package forwarm-rain microphysics and aqueous chemistry Open
Bartman et al., (2022). PySDM v1: particle-based cloud modeling package for warm-rain microphysics and aqueous chemistry. Journal of Open Source Software, 7(72), 3219, https://doi.org/10.21105/joss.03219
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Particle contact dynamics as the origin for non-integer power expansion\n rheology in attractive suspension networks Open
We show that Hertzian particle contacts are the underlying cause of the\nas-yet-unexplained noninteger power laws in weakly nonlinear rheology. In the\nmedium amplitude oscillatory shear (MAOS) region, the cubic scaling of the\nleading ord…
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Effect of particle-size dynamics on properties of dense spongy-particle systems: Approach towards equilibrium Open
Open-porous deformable particles, often envisaged as sponges, are ubiquitous in biological and industrial systems (e.g., casein micelles in dairy products and microgels in cosmetics). The rich behavior of these suspensions is owing to the …
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Collisions and particle dynamics around black holes surrounded by PFDM in STVG Open
Testing dark matter effects on gravity around black holes in the framework of gravity theories through observational data is an essential task of relativistic astrophysical studies. In this work, we first obtain a new spacetime solution fo…
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HylleraasMD: Massively parallel hybrid particle-fieldmolecular dynamics in Python Open
Molecular dynamics (MD) is a computational methodology in which the dynamical behavior of systems of interacting atoms and molecules is investigated by integrating the corresponding classical equations of motion. The analysis of the molecu…
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Accelerating molecular dynamics simulations by a hybrid molecular dynamics-continuum mechanical approach Open
In this contribution, molecular dynamics (MD) simulations in combination with continuum mechanical (CM) approaches are performed to investigate particle movements under uniaxial deformations of an amorphous polymer at particle resolution. …
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Influence of polydispersity on the relaxation mechanisms of glassy liquids Open
State-of-the-art techniques for simulating deeply supercooled liquids require a high degree of size polydispersity to be effective. While these techniques have enabled great insight into the microscopic dynamics near the glass transition, …
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Modification of magnetorheological fluid and its compatibility with metal skeleton: Insights from multi-body dissipative particle dynamics simulations and experimental study Open
Magnetorheological fluid (MRF), as a smart material, plays a pivotal role in sealing equipment. However, the interfacial compatibility between MRF and metal significantly impacts the adhesion of the two phases, which subsequently determine…
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Modelling of the AGS using Zgoubi - Status Open
This paper summarizes the progress achieved so far, and discusses various outcomes, regarding the development of a model of the Alternating Gradient Synchrotron at the RHIC collider. The model, based on stepwise ray-tracing methods, includ…
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Influence of particle softness on active glassy dynamics Open
Active matter studies are increasingly geared towards the high-density or glassy limit. This is mainly inspired by the remarkable resemblance between active glassy materials and conventional passive glassy matter. Interestingly, within thi…