KNUDSEN DIFFUSION
Of continued interest is an improved understanding of gaseous diffusion within small pores. This process, long important for the separation of particles by mass in the nuclear sciences, is now also of significance in the development of fuel cell technologies. Knudsen, viscous, surface and anomalous Knudsen are all flow processes that we are currently studying in the Alderman Barlow Lab group.
Scattering path lengths in a nanopore.
We are currently working on a novel mathematical model whereby the Knudsen diffusion contribution can be estimated given knowledge of a distribution of probable scattering path lengths. This distribution could then possibly be computed using molecular dynamics simulations for any desired pore and gaseous species.
NEW WORK ! D.A. Barlow, F.E. Colson, Theoretical Study of Fast Diffusion in Carbon Nanotubes Journal of Applied Physics, 128, 184302, 2020
Fenner Colson, D.A. Barlow, "Statistical Method for Modeling Knudsen Diffusion in Nanopores", Physical Review E, 100, 062125, 2019.