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The growing interest in the non-equilibrium assembly of colloidal particles in active liquids is driven by the motivation to create novel structures endowed with tunable properties unattainable within the confines of equilibrium systems.…

软凝聚态物质 · 物理学 2024-03-06 Pragya Kushwaha , Sayan Maity , Anjaly S. Menon , Raghunath Chelakkot , Vijayakumar Chikkadi

We study the dynamics of a circular passive inclusion, termed a torquer, in a bath of chiral active Brownian particles. Despite being geometrically symmetric and non-motile, the torquer exhibits persistent rotation due to spatially…

软凝聚态物质 · 物理学 2025-07-18 Abhra Puitandy , Shradha Mishra

We investigate the dynamics of passive particles immersed in a bath of chiral active particles, focusing on the emergence of collective rotational motion. Using numerical simulations, we show that passive particles aggregate into clusters…

软凝聚态物质 · 物理学 2026-04-14 Divya Kushwaha , Abhra Puitandy , Shradha Mishra

Active hydrodynamic theories are a powerful tool to study the emergent ordered phases of internally driven particles such as bird flocks, bacterial suspension and their artificial analogues. While theories of orientationally ordered phases…

软凝聚态物质 · 物理学 2019-03-06 Ananyo Maitra , Martin Lenz

Based on Brownian Dynamics (BD) simulations, we study the dynamical self-assembly of active Brownian particles with dipole-dipole interactions, stemming from a permanent point dipole at the particle center. The propulsion direction of each…

软凝聚态物质 · 物理学 2021-06-09 Guo-Jun Liao , Carol K. Hall , Sabine H. L. Klapp

Differently from passive Brownian particles, active particles, also known as self-propelled Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy from their environment and converting it into directed motion.…

Many biological systems are appropriately viewed as passive inclusions immersed in an active bath: from proteins on active membranes to microscopic swimmers confined by boundaries. The non-equilibrium forces exerted by the active bath on…

软凝聚态物质 · 物理学 2020-07-06 Alpha A. Lee , Dominic Vella , John S. Wettlaufer

Active fluids are a class of non-equilibrium systems where energy is injected into the system continuously by the constituent particles themselves. Many examples, such as bacterial suspensions and actomyosin networks, are intrinsically…

软凝聚态物质 · 物理学 2017-06-26 Elsen Tjhung , Michael E. Cates , Davide Marenduzzo

Colloidal inclusions suspended in a bath of smaller particles experience an effective bath-mediated attraction at small intersurface separations, which is known as the depletion interaction. In an active bath of nonchiral self-propelled…

软凝聚态物质 · 物理学 2021-08-02 Abdolhalim Torrik , Ali Naji , Mahdi Zarif

We explore the self-assembly process of colloidal structures immersed in active baths. By considering low-valence particles we numerically investigate the irreversible aggregation dynamics originated by the presence of run-and-tumble…

软凝聚态物质 · 物理学 2019-01-30 Luca Angelani

Active colloids self-organise to a variety of collective states, ranging from highly motile 'molecules' to complex 3D structures. Using large-scale simulations, we show that hydrodynamic interactions, together with a gravity-like aligning…

软凝聚态物质 · 物理学 2020-03-31 Zaiyi Shen , Alois Würger , Juho S. Lintuvuori

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

We study effective two- and three-body interactions between non-active colloidal inclusions in an active bath of chiral or non-chiral particles, using Brownian Dynamics simulations within a standard, two-dimensional model of disk-shaped…

软凝聚态物质 · 物理学 2017-12-06 Mahdi Zaeifi Yamchi , Ali Naji

We study steady-state properties of a bath of active Brownian particles (ABPs) in two dimensions in the presence of two fixed, permeable (hollow) disklike inclusions, whose interior and exterior regions can exhibit mismatching motility…

软凝聚态物质 · 物理学 2021-07-20 Mahmoud Sebtosheikh , Ali Naji

Understanding interactions between chiral active particles -- self-propelling and self-rotating entities -- is crucial for uncovering how chiral active matter self-organizes into dynamic structures. Although fluctuation-induced forces in…

软凝聚态物质 · 物理学 2025-07-25 Hashem Fatemi , Hamidreza Khalilian , Jalal Sarabadani , M. Reza Shaebani

Equilibrium self-assembly and conventional materials processing techniques fall far short of mimicking dynamic self-actuating processes that are commonplace throughout biology. To bridge the gap between living and synthetic matter, we study…

Artificial soft matter systems have appeared as important tools to harness mechanical motion for microscale manipulation. Typically, this motion is driven either by the external fields or by mutual interaction between the colloids. In the…

软凝聚态物质 · 物理学 2024-11-20 Rahul Chand , Ashutosh Shukla , Sneha Boby , G V Pavan Kumar

In a system of colloidal inclusions suspended in a thermalized bath of smaller particles, the bath engenders an attractive force between the inclusions, arising mainly from entropic origins, known as the depletion force. In the case of…

软凝聚态物质 · 物理学 2020-10-01 Mahdi Zarif , Ali Naji

We consider finite systems of interacting Brownian particles including active friction in the framework of nonlinear dynamics and statistical/stochastic theory. First we study the statistical properties for $1-d$ systems of masses connected…

统计力学 · 物理学 2007-05-23 Werner Ebeling

Because of consuming energy to drive their motion, systems of active colloids are intrinsically out of equilibrium. In the past decade, a variety of intriguing dynamic patterns have been observed in systems of active colloids, and they…

软凝聚态物质 · 物理学 2020-04-16 Zhan Ma , Mingcheng Yang , Ran Ni
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