Results 91 to 100 of about 30,999 (157)
Comparison of particle image velocimetry and the underlying agents dynamics in collectively moving self propelled particles. [PDF]
Sci Rep, 2023 Basak US +5 more
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Collective Motion of Self-Propelled Particles with Memory
Physical Review Letters, 2015 We show that memory, in the form of underdamped angular dynamics, is a crucial ingredient for the collective properties of self-propelled particles. Using Vicsek-style models with an Ornstein-Uhlenbeck process acting on angular velocity, we uncover a rich variety of collective phases not observed in usual overdamped systems, including vortex lattices ...
H. Nagai, Ken +4 more
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Collective motion of self-propelled particles with density-dependent switching effect
AIP Advances, 2016 We study the effect of density-dependent angular response on large scale collective motion, that particles are more likely to switch their moving direction within lower local density region. We show that the presence of density-dependent angular response
Qiu-shi Chen, Yu-qiang Ma
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How surface and fomite infection affect contagion dynamics: a study with self-propelled particles. [PDF]
Eur Phys J Spec Top, 2022 Ghosh S, Chakraborty A, Bhattacharya S.
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Motility-induced coexistence of a hot liquid and a cold gas
Nature CommunicationsIf two phases exist at the same time, such as a gas and a liquid, they have the same temperature. This fundamental law of equilibrium physics is known to apply even to many non-equilibrium systems.
Lukas Hecht, Iris Dong, Benno Liebchen
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Magnetic Janus Particles for Static and Dynamic (Bio)Sensing
Magnetochemistry, 2019 Magnetic Janus particles bring together the ability of Janus particles to perform two different functions at the same time in a single particle with magnetic properties enabling their remote manipulation, which allows headed movement and orientation ...
Susana Campuzano +5 more
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Depinning transition of self-propelled particles
Physical Review EDepinning transitions occur when a threshold force must be applied to drive an otherwise immobile system. For the depinning of colloidal particles from a corrugated landscape, we show how active noise due to self-propulsion impacts the nature of this transition, depending on the speed and the dimensionality $d$ of rotational Brownian motion: the drift ...
Arthur V. Straube, Felix Höfling
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Swarming transitions of self-propelled particles with anisotropic social interactions
Physical Review ResearchCollective motion in living systems is observed across many scales, from bacterial colonies to insect swarms, fish schools, and bird flocks. In all cases the motility of individual cells or organisms both is influenced by and, in turn, influences the ...
Zhanwei Gao, Iain D. Couzin
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Dynamics-dependent density distribution in active suspensions
Nature Communications, 2019 It has been predicted theoretically that the density of self-propelled particles whose speed is spatially dependent should be inversely proportional to the local speed.
Jochen Arlt +4 more
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Self-propelled particles driven by light
, 2013 In this thesis I review the main features of active systems, both biological and artificial, and I propose a novel technique to obtain self-propelling microscopic colloids. To achieve the propulsion we exploit the phoretic forces that come into play when a Janus particle modifies asymmetrically its surrounding. A lot of experimental effort is dedicated
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