Ensemble measurement of diffusion: Novel beauty and evidence

Christian Chmelik, Lars Heinke, Pavel Kortunov, Jing Li, David Olson, Despina Tzoulaki, Jens Weitkamp, Jörg Kärger

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


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

Original languageEnglish
Pages (from-to)2623-2627
Number of pages5
Issue number15
Publication statusPublished - Oct 19 2009


  • Diffusion
  • Metal-organic frameworks
  • Nanoporous materials
  • Surface permeation
  • Zeolites

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

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