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 …

A classical equation that accounts for observations of non-Arrhenius and cryogenic grain boundary migration

ER Homer, OK Johnson, D Britton… - npj Computational …, 2022 - nature.com
Observations of microstructural coarsening at cryogenic temperatures, as well as numerous
simulations of grain boundary motion that show faster migration at low temperature than at …

The rich phenomenology of Brownian particles in nonlinear potential landscapes

JM Sancho, AM Lacasta - The European Physical Journal Special Topics, 2010 - Springer
Non-interacting Brownian particles obey Langevin equations fulfilling a fluctuation–
dissipation relation between friction and thermal noise. Under a linear potential (constant …

Weak disorder: anomalous transport and diffusion are normal yet again

M Khoury, AM Lacasta, JM Sancho, K Lindenberg - Physical review letters, 2011 - APS
We carry out a detailed study of the motion of particles driven by a constant external force
over a landscape consisting of a periodic potential corrugated by a small amount of spatial …

Giant diffusion of underdamped particles in a biased periodic potential

B Lindner, IM Sokolov - Physical Review E, 2016 - APS
We consider the diffusive properties of Brownian motion in a biased periodic potential. We
relate the effective diffusion coefficient to the solution of two coupled time-independent …

Sorting on periodic surfaces

AM Lacasta, JM Sancho, AH Romero, K Lindenberg - Physical review letters, 2005 - APS
Particles moving on crystalline surfaces and driven by external forces or flow fields can
acquire velocities along directions that deviate from that of the external force. This effect …

Dispersionless transport in a washboard potential

K Lindenberg, JM Sancho, AM Lacasta, IM Sokolov - Physical review letters, 2007 - APS
We study and characterize a new dynamical regime of underdamped particles in a tilted
washboard potential. We find that for small friction in a finite range of forces the particles …

Diffusive-to-ballistic transition in grain boundary motion studied by atomistic simulations

C Deng, CA Schuh - Physical Review B—Condensed Matter and Materials …, 2011 - APS
An adapted simulation method is used to systematically study grain boundary motion at
velocities and driving forces across more than five orders of magnitude. This analysis …

Critical asymmetry for giant diffusion of active Brownian particles

B Lindner, EM Nicola - Physical review letters, 2008 - APS
We study the effect of an asymmetry on the transport properties of an active Brownian
particle. We demonstrate the existence of a critical force or, more generally, of a critical …

Ion-cage interpretation for the structural and dynamic changes of ionic liquids under an external electric field

R Shi, Y Wang - The Journal of Physical Chemistry B, 2013 - ACS Publications
In many applications, ionic liquids (ILs) work in a nonequilibrium steady state driven by an
external electric field. However, how the electric field changes the structure and dynamics of …