Evaluation of relationship between liquid-crystal director orientation and SH wave velocity
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چکیده
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NMR of bicelles: orientation and mosaic spread of the liquid-crystal director under sample rotation.
Model-membrane systems composed of liquid-crystalline bicellar phases can be uniaxially oriented with respect to a magnetic field, thereby facilitating structural and dynamics studies of membrane-associated proteins. Here we quantitatively characterize a method that allows the manipulation of the direction of this uniaxial orientation. Bicelles formed from DMPC/DHPC are examined by (31)P NMR un...
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چکیده ندارد.
Director Dynamics in Liquid-Crystal Physical Gels
Nematic liquid-crystal (LC) elastomers and gels have a rubbery polymer network coupled to the nematic director. While LC elastomers show a single, non-hydrodynamic relaxation mode, dynamic light-scattering studies of self-assembled liquid-crystal gels reveal orientational fluctuations that relax over a broad time scale. At short times, the relaxation dynamics exhibit hydrodynamic behavior. In c...
متن کاملNematic Director Orientation in a Liquid-Crystal-Dispersed Polymer - A Deuterium NMR Approach
The nuclear-magnetic-resonance (NMR) technique is employed to liquid-crystal-dispersed-polymer (LCDP) systems. Deuterium NMR is used to determine director distributions in LCDP cells in the presence of a magnetic field. The samples consist of a nematic liquid crystal mixed with small percentages of a monomer that is polymerized under different conditions after dissolving it in the liquid crysta...
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ژورنال
عنوان ژورنال: IEEJ Transactions on Fundamentals and Materials
سال: 2002
ISSN: 0385-4205,1347-5533
DOI: 10.1541/ieejfms.122.335