Diffusion from within a Spherical Body with Partially Blocked Surface: Diffusion through a Constant Surface Area

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TitreDiffusion from within a Spherical Body with Partially Blocked Surface: Diffusion through a Constant Surface Area
Type de publicationJournal Article
Nouvelles publications2010
AuteursAmatore, C, Oleinick A, Svir I
JournalChemphyschem
Volume11
Fascicule1
Pagination149-158
Année de publicationJan
Numéro1439-4235
Accession NumberISI:000274265300022
Résumé

Diffusion from spherical bodies has been a subject of interest since the earliest times of modern sciences and a few equivalent analytical formulations of the problem are taught in engineering textbooks dealing with cooling rates of hot spheres. However, all these former studies assume that the diffusing material is transferable to/from the surrounding space through the whole surface of the spherical body. Conversely, the development of nanoscience and the improved knowledge of microscopic biological events have evidenced that diffusion from spherical bodies is a ubiquitous problem. It often occurs in situations where the nanosphere surface are not isotropic and partly impermeable to diffusing materials. This work elaborates on this issue and theoretically establishes that-with some specific allowance-the basic analytical equation of diffusion from/to fully accessible spherical bodies may be used.

URL<Go to ISI>://000274265300022
DOI10.1002/cphc.200900646
Importer un fichierDiffusion from within a Spherical Body with Partially Blocked Surface: Diffusion through a Constant Surface Area
Unité de rattachement: 
UMR 8640