title: Ensemble measurement of diffusion: novel beauty and evidence.
abstract: Recording the evolution of concentration profiles in nanoporous materials opens a new field of diffusion research with particle ensembles. The technique is based on the complementary application of interference microscopy and IR micro-imaging. Combining the virtues of diffusion measurements with solids and fluids, it provides information of unprecedented wealth and visual power on transport phenomena in molecular ensembles. These phenomena include the diverging uptake and release patterns for concentration-dependent diffusivities, the mechanisms of mass transfer at the fluid-solid interface and opposing tendencies in local and global concentration evolution.
authors.affiliation: Department of Interface Physics, University of Leipzig, Linnéstr. 5, 04103 Leipzig, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Chmelik
authors.forename: Lars
authors.initials: L
authors.lastname: Heinke
authors.forename: Pavel
authors.initials: P
authors.lastname: Kortunov
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: David
authors.initials: D
authors.lastname: Olson
authors.forename: Despina
authors.initials: D
authors.lastname: Tzoulaki
authors.forename: Jens
authors.initials: J
authors.lastname: Weitkamp
authors.forename: Jörg
authors.initials: J
authors.lastname: Kärger