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Publication Detail
Direct measurement of anisotropic probe motion in ordered systems
  • Publication Type:
  • Authors:
    Bain AJ, Bryant J, Dean RJ
  • Publication date:
  • Pagination:
    98, 99
  • Published proceedings:
    Technical Digest - European Quantum Electronics Conference
  • Status:
The direct measurements of probe θ and φ diffusion in an ordered medium of oxazine 4-5CB system are discussed. Results indicate that the dynamics are dominated by anisotropic viscosity, which increases for φ motion as the liquid crystal order relaxes. With increasing temperature, θ diffusion shows the expected Arrhenium temperature dependence for liquid crystal diffusion. These observations do not agree with treatments of rotational diffusion in a cylindrical symmetric aligning potential, which have been extensively used to analyze steady-state fluorescence data in anisotropic media.
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