title: Nanoporous glass as a model system for a consistency check of the different techniques of diffusion measurement.
abstract: The remarkable differences in the guest diffusivities in nanoporous materials commonly found with the application of different measuring techniques are usually ascribed to the existence of a hierarchy of transport resistances in addition to the diffusional resistance of the pore system and their differing influence due to the differing diffusion path lengths covered by the different measuring techniques. We report diffusion measurements with nanoporous glasses where the existence of such resistances could be avoided. Molecular propagation over diffusion path lengths from hundreds of nanometers up to millimeters was thus found to be controlled by a uniform mechanism, appearing in coinciding results of microscopic and macroscopic diffusion measurement.
authors: University of Leipzig, Faculty of Physics and Earth Sciences, Leipzig, Germany.
authors: Christian
authors: C
authors: Chmelik
authors: Dirk
authors: D
authors: Enke
authors: Petrik
authors: P
authors: Galvosas
authors: Oliver
authors: O
authors: Gobin
authors: Andreas
authors: A
authors: Jentys
authors: Hervé
authors: H
authors: Jobic
authors: Jörg
authors: J
authors: Kärger
authors: Cordula B
authors: CB
authors: Krause
authors: Jens
authors: J
authors: Kullmann
authors: Johannes
authors: J
authors: Lercher
authors: Sergej
authors: S
authors: Naumov
authors: Douglas M
authors: DM
authors: Ruthven
authors: Tobias
authors: T
authors: Titze