eprintid: 1367399
rev_number: 27
eprint_status: archive
userid: 608
dir: disk0/01/36/73/99
datestamp: 2012-10-13 18:34:23
lastmod: 2021-09-26 22:11:58
status_changed: 2012-10-13 18:34:23
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Coppens, M
creators_name: Malek, K
title: Effects of surface roughness on self- and transport diffusion in porous media in the Knudsen regime
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F43
abstract: The effect of surface roughness on Knudsen diffusion in nanoporous media is investigated by means of dynamic Monte Carlo simulations in three-dimensional rough fractal pores. These simulations yield new insight and explain a number of apparent inconsistencies by revealing a striking difference between the roughness dependence of transport diffusion and gradientless (self- or tracer) diffusion. Both analytical and simulation results show a significant roughness dependence of self-diffusion in the Knudsen regime. Transport diffusion, on the other hand, is roughness independent, as the fluxes do not depend on the detailed residence time and molecular trajectories.
date: 2001-09
official_url: http://dx.doi.org/10.1103/PhysRevLett.87.125501
vfaculties: VENG
oa_status: green
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_manual
elements_source: Manually entered
elements_id: 779655
doi: 10.1103/PhysRevLett.87.125501
lyricists_name: Coppens, Marc-Olivier
lyricists_id: MCOPP36
full_text_status: public
publication: Physical Review Letters
volume: 87
number: 12
place_of_pub: USA
event_location: USA
citation:        Coppens, M;    Malek, K;      (2001)    Effects of surface roughness on self- and transport diffusion in porous media in the Knudsen regime.                   Physical Review Letters , 87  (12)      10.1103/PhysRevLett.87.125501 <https://doi.org/10.1103/PhysRevLett.87.125501>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1367399/1/e125501.pdf