Results 71 to 80 of about 3,052,280 (220)
Fluctuation-dissipation in active matter [PDF]
The Journal of Chemical Physics, 2019 In a colloidal suspension at equilibrium, the diffusive motion of a tracer particle due to random thermal fluctuations from the solvent is related to the particle’s response to an applied external force, provided this force is weak compared to the thermal restoring forces in the solvent. This is known as the fluctuation-dissipation theorem (FDT) and is
Eric W. Burkholder, John F. Brady
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Catalytic enzymes are active matter. [PDF]
Proc Natl Acad Sci U S A, 2018 SignificanceCatalysis and mobility of reactants in fluid are normally thought to be decoupled. Violating this classical paradigm, this paper presents the catalyst laws of motion. Comparing experimental data to the theory presented here, we conclude that part of the free energy released by chemical reaction is channeled into driving catalysts to execute
Jee AY, Cho YK, Granick S, Tlusty T.
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Nonequilibrium glass transitions in driven and active matter
, 2013 The glass transition, extensively studied in dense fluids, polymers, or colloids, corresponds to a dramatic evolution of equilibrium transport coefficients upon a modest change of control parameter, like temperature or pressure.
Berthier, Ludovic, Kurchan, Jorge
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New Journal of Physics, 2017 We study the appearance and properties of cluster crystals (solids in which the unit cell is occupied by a cluster of particles) in a two-dimensional system of self-propelled active Brownian particles with repulsive interactions.
Jean-Baptiste Delfau +2 more
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The Radio-Activity of Matter [PDF]
Nature, 1901 AT the commencement of the year 1896, in carrying out some experiments with the salts of uranium, the exceptional optical properties of which I had been studying for some time, I observed that these salts emitted an invisible radiation, which traversed metals and bodies opaque to light as well as glass and other transparent substances.
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Vortex formation and dynamics of defects in active nematic shells
New Journal of Physics, 2017 We present a hydrodynamic model for a thin spherical shell of active nematic liquid crystal with an arbitrary configuration of defects. The active flows generated by defects in the director lead to the formation of stable vortices, analogous to those ...
Diana Khoromskaia, Gareth P Alexander
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, 2022 Abstract The force-free nature of interfacial transport processes that are collectively terms as phoretic mechanisms (such as diffusiophoresis, electrophoresis, thermophoresis, etc) affords the possibility of designing self-propelled particles, e.g. Janus particles with built-in sources that arise from catalytic activity or light-induced
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Avalanche Dynamics for Active Matter in Heterogeneous Media
, 2017 Using numerical simulations, we examine the dynamics of active matter run-and-tumble disks moving in a disordered array of obstacles. As a function of increasing active disk density and activity, we find a transition from a completely clogged state to a ...
Reichhardt, C., Reichhardt, C. J. O.
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Trypanosoma brucei moving in microchannels and through constrictions
New Journal of PhysicsTrypanosoma brucei ( T. brucei ), a single-celled parasite and natural microswimmer, is responsible for fatal sleeping sickness in infected mammals, including humans. Understanding how T.
Zihan Tan +2 more
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Synthetic Chemotaxis and Collective Behavior in Active Matter
, 2018 Conspectus: The ability to navigate in chemical gradients, called chemotaxis, is crucial for the survival of microorganisms. It allows them to find food and to escape from toxins.
Benno Liebchen +3 more
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