Experiments on Tracer Diffusion in Thin Free-Standing Liquid-Crystal Films
- 15 December 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 79 (24) , 4922-4925
- https://doi.org/10.1103/physrevlett.79.4922
Abstract
Using laser-induced photobleaching of a fluorescent tracer molecule, we study diffusion in free-standing smectic films as thin as two layers. For films four or more layers thick, the in-plane diffusion constant increases in agreement with a hydrodynamic theory outlined here. Two- and three-layer films show different behavior.Keywords
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