Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Dean, D. S."'
We consider the motion of a harmonically trapped overdamped particle, which is submitted to a self-phoretic force, that is proportional to the gradient of a diffusive field for which the particle itself is the source. In agreement with existing resul
Externí odkaz:
http://arxiv.org/abs/2403.07426
Publikováno v:
J. Chem. Phys. 152, 234109 (2020)
We revisit the classic problem of the effective diffusion constant of a Brownian particle in a square lattice of reflecting impenetrable hard disks. This diffusion constant is also related to the effective conductivity of non-conducting and infinitel
Externí odkaz:
http://arxiv.org/abs/2111.04354
Publikováno v:
Journal of Statistical Mechanics: Theory and Experiment (2021) 113205
Optically trapped particles are often subject to a non-conservative scattering force arising from radiation pressure. In this paper we present an exact solution for the steady state statistics of an overdamped Brownian particle subjected to a commonl
Externí odkaz:
http://arxiv.org/abs/2110.04362
Publikováno v:
J. Chem. Phys. 149, 124105 (2018)
The effective diffusivity of Brownian tracer particles confined in periodic micro-channels is smaller than the microscopic diffusivity due to entropic trapping. Here, we study diffusion in two-dimensional periodic channels whose cross-section present
Externí odkaz:
http://arxiv.org/abs/1807.05366
Starting from the stochastic equation for the density operator, we formulate the exact (instantaneous) stress tensor for interacting Brownian particles, whose average value agrees with expressions derived previously. We analyze the relation between t
Externí odkaz:
http://arxiv.org/abs/1712.05160
Publikováno v:
J. Stat. Mech. (2017) 123205
We examine the dispersion of Brownian particles in a symmetric two dimensional channel, this classical problem has been widely studied in the literature using the so called Fick-Jacobs' approximation and its various improvements. Most studies rely on
Externí odkaz:
http://arxiv.org/abs/1710.02699
Publikováno v:
EPL, 118, 40004 (2017)
The effective diffusivity $D_e$ of tracer particles diffusing in periodically corrugated axisymmetric two and three dimensional channels is studied. The majority of previous studies of this class of problems are based on perturbative analyses about n
Externí odkaz:
http://arxiv.org/abs/1709.03722
Autor:
Guérin, T., Dean, D. S.
Publikováno v:
Phys. Rev. E, 95, 012109 (2017)
We consider the time dependent dispersion properties of overdamped tracer particles diffusing in a one dimensional periodic potential under the influence of an additional constant tilting force $F$. The system is studied in the region where the force
Externí odkaz:
http://arxiv.org/abs/1701.02116
Publikováno v:
EPL 113 18008 (2016)
The exact solution, via transfer matrix, of the simple one dimensional lattice Coulomb gas (1d LCG) model can reproduce peculiar features of ionic liquid capacitors, such as overscreening, layering, and camel- and bell-shaped capacitance curves. Usin
Externí odkaz:
http://arxiv.org/abs/1511.07170
Autor:
Guérin, T., Dean, D. S.
Publikováno v:
Phys. Rev. E 92, 062103 (2015)
We consider the dispersion properties of tracer particles moving in non-equilibrium heterogeneous periodic media. The tracer motion is described by a Fokker-Planck equation with arbitrary spatially periodic (but constant in time) local diffusion tens
Externí odkaz:
http://arxiv.org/abs/1509.02733