Determination of liquid crystal-to-wall anchoring anisotropy by the surface-plasmon polariton technique
Based on the Oseen and Frank elastic continuum theory of nematic liquid crystals, and on a generalized torque balance equation at the interface, the magnitude and the gradient of the tilt angle of liquid crystal molecules at the interface have been calculated in a homogeneous cell as a function of applied voltage and liquid crystal-to-wall anchoring anisotropy C. Consequently, the reflectivities associated with the excitation of the surface-plasmon polariton propagating along the liquid crystal-to-wall interface can be evaluated for comparison with experimental results to determine a value for C. Numerical computations of reflectivities have been shown to fit the experimental results of Sprokel, Santo, and Swalen (Mol. Cryst. Liq. Cryst. 68, 29 (1981)). An average value of 0.11 +- 0.05 ergs/cm/sup 2/ for C has been deduced.
- Research Organization:
- IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598
- OSTI ID:
- 6751618
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 53:10; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360603* -- Materials-- Properties
ADHESION
ANISOTROPY
CRYSTALS
ELASTICITY
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
FLUIDS
INTERFACES
LIQUID CRYSTALS
LIQUIDS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMONS
QUASI PARTICLES
REFLECTIVITY
SURFACE PROPERTIES
TENSILE PROPERTIES
TORQUE
WALLS