Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell (Articolo in rivista)

Type
Label
  • Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell (Articolo in rivista) (literal)
Anno
  • 2001-01-01T00:00:00+01:00 (literal)
Alternative label
  • MAZZULLA A; CIUCHI F; SAMBLES JR (2001)
    Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell
    in Physical review. E, Statistical, nonlinear, and soft matter physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • MAZZULLA A; CIUCHI F; SAMBLES JR (literal)
Pagina inizio
  • 021708 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 64 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • INFM unità di Cosenza Dip. di Fisica UNICAL Univ Exeter, Sch Phys, Thin Film Photon Grp, Exeter, Devon, England (literal)
Titolo
  • Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell (literal)
Abstract
  • We present an optical study of the influence of both the flexoelectric effect and surface polarization on a hybrid-aligned nematic cell using the half-leaky guided mode technique. Tilt angle profiles, obtained from fits of experimental data (reflectivity curves) taken under applied voltages, are compared with the ones derived by a complete theoretical model. Measurements with an applied alternating voltage allow the evaluation of (fie anchoring energy by solving the torque balance equation at the planar surface. From measurements with static fields, the sum of flexoelectric coefficients and the surface polarization are determined by numerical solution of Euler-Lagrange equations. (literal)
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