Transport in small-scale biological and soft-matter systems typically occurs under
confinement conditions in which particles proceed through obstacles and irregularities of the …

The transport of particles through channels is of paramount importance in physics,
chemistry, and surface science due to its broad real world applications. Much insight can be …

We study the mean first exit time (Tε) of a particle diffusing in a circular or a spherical micro-
domain with an impenetrable confining boundary containing a small escape window (EW) of …

The paradigmatic model for heterogeneous media used in diffusion studies is built from
reflecting obstacles and surfaces. It is well known that the crowding effect produced by these …

We consider a disk-like Janus particle self-driven by a force of constant magnitude f, but an
arbitrary direction depending on the stochastic rotation of the disk. The particle diffuses in a …

This study focuses on the derivation of a general effective diffusion coefficient to describe the
two-dimensional (2D) diffusion in a narrow and smoothly asymmetric channel of varying …

Transport in confined structures of varying geometry has become the subject of growing
attention in recent years since such structures are ubiquitous in biology and technology. In …

We present here the measurement of the diffusivity of spherical particles closely confined by
narrow microchannels. Our experiments yield a two-dimensional map of the position …

We perform a simulation study of the diffusion of small solutes in the confined domains
imposed by inverse bicontinuous cubic phases for the primitive, diamond, and gyroid …

We study the transport of Brownian particles through a corrugated channel caused by a
force field containing curl-free (scalar potential) and divergence-free (vector potential) parts …