This paper presents studies on the characteristics of gas molecular mean freepath in nanopores by molecular dynamics simulation. Our study results indicate that themean free path of all molecules in nanopores depend on both the radius of the nanoporeand the gas-solid interaction strength. Besides mean free path of all molecules in thenanopore, this paper highlights the gas molecular mean free p...

The mean free path is an essential characteristic length in disordered systems. In microscopic calculations, it is usually approximated by the classical value of the elastic mean free path. It corresponds to the Boltzmann mean free path when only isotropic scattering is considered, but it is different for anisotropic scattering. In this paper, we work out the corrections to the so called Boltzm...

The properties of transport in confined geometries has received substantial attention in recent years (see, e.g., Ref. 1). In this letter, the effects of boundary scattering on transport in small samples is examined. Our goal is to provide concise expressions for the effect of boundaries on transport without explicitly evaluating the Boltzmann equation. We present analytical expressions for the...