Long-time diffusion and energy transfer in polydisperse mixtures of particles with different temperatures
| Autor: | Michele Castellana, Jean-François Joanny, Efe Ilker |
|---|---|
| Přispěvatelé: | Institut Curie [Paris], Chaire Matière molle et biophysique, Collège de France (CdF (institution)) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Structure formation and active systems
[PHYS]Physics [physics] Materials science Statistical Mechanics (cond-mat.stat-mech) Energy transfer Non-equilibrium thermodynamics Thermodynamics FOS: Physical sciences Condensed Matter - Soft Condensed Matter 01 natural sciences 7. Clean energy 010305 fluids & plasmas Biological Physics (physics.bio-ph) 0103 physical sciences Soft Condensed Matter (cond-mat.soft) Physics - Biological Physics Diffusion (business) 010306 general physics Condensed Matter - Statistical Mechanics |
| Zdroj: | Physical Review Research Physical Review Research, American Physical Society, 2021, 3 (2), pp.2394-2399. ⟨10.1103/physrevresearch.3.023207⟩ |
| ISSN: | 2643-1564 |
| Popis: | Evidence suggests that the transport rate of a passive particle at long timescales is enhanced due to interactions with the surrounding active ones in a size- and composition-dependent manner. Using a system of particles with different temperatures, we probe these effects in dilute solutions and derive long-time friction and self-diffusion coefficients as functions of volume fractions, sizes and temperatures of particles in $d=2$ and 3 dimensions. Thus, we model excluded-volume interactions for nonequilibrium systems but also extend the scope to short-range soft potentials and compare our results to Brownian-dynamics simulations. Remarkably, we show that both viscosity and energy flux display a nonlinear dependence on size. The simplicity of our formalism allows to discover various interesting scenarios that can be relevant for biological systems and active colloids. Comment: Published version, main text and supplemental material |
| Databáze: | OpenAIRE |
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