@article{discovery1367399,
           title = {Effects of surface roughness on self- and transport diffusion in porous media in the Knudsen regime},
         journal = {Physical Review Letters},
          number = {12},
          volume = {87},
         address = {USA},
           month = {September},
            year = {2001},
        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.},
             url = {http://dx.doi.org/10.1103/PhysRevLett.87.125501},
          author = {Coppens, M and Malek, K}
}