Investigation of Fluctuations and Oscillatory States in Rayleigh-Bénard Systems by Neutron Scattering

  • T. Riste
  • K. Otnes
Part of the NATO Advanced Study Institutes Series book series (NSSB, volume 77)


In order for the neutron scattering technique to be useful in the study of the Rayleigh-Bénard problem the sample must be a nematic liquid crystal. The elongated molecules have an anisotropic scattering power, i.e. the scattering depends on the orientation of the molecules relative to the (horizontal) scattering vector. There exists a well-known coupling between orientation and flow in nematics [1], and the onset and changes in the flow can be detected through the ensueing change in the molecular orientation.


Liquid Crystal International Atomic Energy Agency Nematic Liquid Crystal Oscillatory State Convective State 
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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • T. Riste
    • 1
  • K. Otnes
    • 1
  1. 1.Institute for Energy TechnologyKjellerNorway

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