Diffusion coefficient of a Brownian particle in equilibrium and nonequilibrium: Einstein model and beyond

J Spiechowicz, IG Marchenko, P Hänggi, J Łuczka - Entropy, 2022 - mdpi.com
The diffusion of small particles is omnipresent in many processes occurring in nature. As
such, it is widely studied and exerted in almost all branches of sciences. It constitutes such a …

Diffusion on a solid surface: Anomalous is normal

JM Sancho, AM Lacasta, K Lindenberg, IM Sokolov… - Physical review …, 2004 - APS
We present a numerical study of classical particles diffusing on a solid surface. The particles'
motion is modeled by an underdamped Langevin equation with ordinary thermal noise. The …

Quasi-elastic helium-atom scattering from surfaces: experiment and interpretation

AP Jardine, J Ellis, W Allison - Journal of Physics: Condensed …, 2002 - iopscience.iop.org
Diffusion of an adsorbate is affected both by the adiabatic potential energy surface in which
the adsorbate moves and by the rate of thermal coupling between the adsorbate and …

The dynamics of activated surface diffusion

S Miret-Artés, E Pollak - Journal of Physics: Condensed Matter, 2005 - iopscience.iop.org
An elementary process occurring on surfaces is diffusion. The dynamics is simplest when
the concentration of adsorbates is sufficiently small that interaction between adsorbates can …

Negative mobility of a Brownian particle: strong damping regime

A Słapik, J Łuczka, J Spiechowicz - Communications in Nonlinear Science …, 2018 - Elsevier
We study impact of inertia on directed transport of a Brownian particle under non-equilibrium
conditions: the particle moves in a one-dimensional periodic and symmetric potential, is …

Non-monotonic temperature dependence of chaos-assisted diffusion in driven periodic systems

J Spiechowicz, P Talkner, P Hänggi… - New Journal of …, 2016 - iopscience.iop.org
The spreading of a cloud of independent Brownian particles typically proceeds more
effectively at higher temperatures, as it derives from the commonly known Sutherland …

Kramers' turnover theory for diffusion of Na atoms on a Cu (001) surface measured by He scattering

R Guantes, JL Vega, S Miret-Artés… - The Journal of chemical …, 2003 - pubs.aip.org
The diffusion of adatoms and molecules on a surface at low coverage can be measured by
helium scattering. The experimental observable is the dynamic structure factor. In this article …

Molecular dynamics simulations of the diffusion of benzene sub-monolayer films on graphite basal plane surfaces

P Fouquet, MR Johnson, H Hedgeland, AP Jardine… - Carbon, 2009 - Elsevier
A classical molecular dynamics study of the diffusive motion of benzene molecules on
graphite basal planes has been performed in the sub-monolayer coverage regime. Atomistic …

Copper adatom, admolecule transport, and island nucleation on TiN (0 0 1) via ab initio molecular dynamics

DG Sangiovanni - Applied Surface Science, 2018 - Elsevier
Density-functional ab initio molecular dynamics (AIMD) simulations are carried out to
determine Cu adatom and admolecule transport properties as a function of temperature, as …

Irregular dependence on Stokes number, and nonergodic transport, of heavy inertial particles in steady laminar flows

AVS Nath, A Roy, S Ravichandran, R Govindarajan - Physical Review Fluids, 2024 - APS
Small heavy particles in a fluid flow respond to the flow on a timescale proportional to their
inertia or Stokes number St. Their behavior has been thought to be gradually modified as St …