Self-diffusion of fluids in narrow cylindrical pores
In: The Journal of Chemical Physics, Jg. 117 (2002-08-01), S. 2289-2292
Online
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Zugriff:
Fluids under stochastic dynamics in narrow cylindrical pores exhibit a dynamical transition from single-file diffusion (SFD) to Fickian bulk diffusion. For long time, the mean square displacement will change as the pore size increases, with a transition from SFD, ∼t1/2, to Fickian, ∼t, while the diffusion coefficient (Dxx) increases from zero. We present a theory of this important process in terms of a hopping time, τhop, leading to Dxx∝(τhop)−1/2 which is verified with simulation. While the crossover is to be expected, the simple form is a priori unanticipated and is likely to be universal.
Titel: |
Self-diffusion of fluids in narrow cylindrical pores
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Autor/in / Beteiligte Person: | Percus, J. K. ; Mon, K. K. |
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Zeitschrift: | The Journal of Chemical Physics, Jg. 117 (2002-08-01), S. 2289-2292 |
Veröffentlichung: | AIP Publishing, 2002 |
Medientyp: | unknown |
ISSN: | 1089-7690 (print) ; 0021-9606 (print) |
DOI: | 10.1063/1.1490337 |
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