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The transport of active particles may occur in complex environments, in which it emerges from the interplay between the mobility of the active components and the quenched disorder of the environment. Here we explore structural and dynamical…

软凝聚态物质 · 物理学 2023-03-31 Fergus J. Moore , John Russo Tanniemola B. Liverpool , C. Patrick Royall

We examine motility-induced phase separation (MIPS) in two-dimensional run and tumble disk systems using both machine learning and noise fluctuation analysis. Our measures suggest that within the MIPS state there are several distinct…

软凝聚态物质 · 物理学 2024-04-23 D. McDermott , C. Reichhardt , C. J. O. Reichhardt

Molecular dynamics simulations were employed to investigate the phase separation process of a two-dimensional active Brownian dumbbell model. We evaluated the time dependence of the typical size of the dense component using the scaling…

软凝聚态物质 · 物理学 2024-02-13 C. B. Caporusso , L. F. Cugliandolo , P. Digregorio , G. Gonnella , A. Suma

We investigate the behavior of active Brownian particles (ABP) within a temporal complex network framework approach. We focused on the node degree distribution, average path length, and average clustering coefficient across the P\'eclet…

生物物理 · 物理学 2024-05-29 Italo Salas , Francisca Guzmán-Lastra , Denisse Pastén , Ariel Norambuena

We introduce jerky chiral active Brownian particles (jcABPs), a generalization of conventional chiral active Brownian particles (cABPs) subjected to jerk, the time derivative of acceleration, and analytically derive their mean displacement…

统计力学 · 物理学 2025-12-10 Stephy Jose , Hartmut Löwen

We studied a collection of chiral active particles (CAP) on a two dimensional substrate using extensive numerical study. Particles interact through soft repulsive interaction. The activity and chirality of particles is tuned by varying…

软凝聚态物质 · 物理学 2022-08-22 Vivek Semwal , Jayam Joshi , Shradha Mishra

The spatiotemporal dynamics in systems of active self-propelled particles is controlled by the propulsion mechanism in combination with various direct interactions, such as steric repulsion, hydrodynamics, and chemical fields. Yet, these…

软凝聚态物质 · 物理学 2024-06-03 Mario Theers , Elmar Westphal , Kai Qi , Roland G. Winkler , Gerhard Gompper

We show that systematic particle rotations in a fluid composed of disk-shaped spinners can spontaneously lead to phase separation. The phenomenon arises out of a homogeneous and hydrostatic stationary state, due to a pressure feedback…

软凝聚态物质 · 物理学 2026-05-28 Pasquale Digregorio , Ignacio Pagonabarraga , Francisco Vega Reyes

The steady state and phase ordering kinetics in a pure active Borwnian particle system are studied in recent years. In binary mixture of active and passive Brownian particles passive particles are used as probe to understand the properties…

软凝聚态物质 · 物理学 2021-08-23 Shambhavi Dikshit , Shradha Mishra

Clustering is one of the mayor collective phenomena observed in active matter. We study the overdamped motion of interacting active Brownian particles in two dimensions. An instability in the pair correlation function causes the onset of…

软凝聚态物质 · 物理学 2024-03-18 Rüdiger Kürsten

Active Brownian particles (ABPs, such as self-phoretic colloids) swim at fixed speed $v$ along a body-axis ${\bf u}$ that rotates by slow angular diffusion. Run-and-tumble particles (RTPs, such as motile bacteria) swim with constant $\u$…

统计力学 · 物理学 2013-02-27 M. E. Cates , J. Tailleur

Active Brownian particles (ABPs) are termed out to be a successful way of modeling the moving microorganism on the substrate. In recent studies, it is shown that such organisms can sense the characteristics of the substrate. Motivated by…

软凝聚态物质 · 物理学 2023-10-31 Pawan Kumar Mishra , Ajeya Krishna , Shradha Mishra

Self-propelled particles rarely move in straight lines; environmental interactions, shape asymmetry, and intrinsic torques generically induce curved or fluctuating trajectories. In biological and synthetic systems, this curvature often…

软凝聚态物质 · 物理学 2026-01-06 Diganta Bhaskar , Abhishek Chaudhuri , Anil Kumar Dasanna

Active matter systems - such as a collection of active colloidal particles - operate far from equilibrium with complex inter-particle interactions that govern their collective dynamics. Predicting the collective dynamics of such systems may…

软凝聚态物质 · 物理学 2024-08-06 Arvin Gopal Subramaniam , Manoj Kumar , Shashi Thutupalli , Rajesh Singh

Motility-Induced Phase Separation (MIPS) is a distinctive phenomenon in active matter that arises from its inherent non-equilibrium nature. Despite recent progress in understanding MIPS in dry active systems, it has been debated whether…

软凝聚态物质 · 物理学 2025-10-01 Tingtao Zhou , John F. Brady

We introduce a system of active matter swarmalators composed of elastically interacting run-and-tumble active disks with an internal phase $\phi_i$. The disks experience an additional attractive or repulsive force with neighboring disks…

软凝聚态物质 · 物理学 2024-04-23 B. Adorjani , A. Libal , C. Reichhardt , C. J. O. Reichhardt

We investigate a trapping mechanism for passive Brownian particles based on mixtures with self-propelled dipolar colloids. Active dipoles, whose magnetic moment is oriented perpendicularly to their propulsion direction, spontaneously form…

软凝聚态物质 · 物理学 2025-09-18 Arnaud Compagnie , Nicolas Vandewalle , Eric Opsomer

We study quasi two-dimensional, monodisperse systems of active Brownian particles (ABPs) for a range of activities, stiffnesses, and densities. We develop a microscopic, analytical method for predicting the dense phase structure formed…

软凝聚态物质 · 物理学 2021-06-24 Nicholas Lauersdorf , Thomas Kolb , Moslem Moradi , Ehssan Nazockdast , Daphne Klotsa

Through molecular dynamics simulations, we investigate the phase separation and aggregation dynamics of active dumbbell particles in two-dimensions subjected to shear. We find that the growth of the phase-separated region is arrested when…

软凝聚态物质 · 物理学 2025-09-23 Lucio Mauro Carenza , Giuseppe Negro , Pasquale Digregorio , Antonio Suma , Giuseppe Gonnella

We propose a one-dimensional model of active particles interpolating between quorum sensing models used in the study of motility-induced phase separation (MIPS) and models of congestion of traffic flow on a single-lane highway. Particles…

统计力学 · 物理学 2026-01-08 Eric Bertin , Alexandre Solon