Wydział Fizyki Technicznej, Informatyki i Matematyki Stosowanej / Faculty of Technical Physics, Information Technology and Applied Mathematics / W7

Stały URI zbioruhttp://hdl.handle.net/11652/7

Przeglądaj

Filtry

2016 - 20193

Ustawienia

Autorsearch.filters.applied.operator.equals: search.filters.author.Buczkowska, MariolaTematsearch.filters.applied.operator.equals: search.filters.subject.flexoelectricity

Wyniki wyszukiwania

Teraz wyświetlane 1 - 3 z 3
  • Pozycja
    Influence of chirality on two-dimensional deformations of twisted flexoelectric nematic layers
    (Lodz University of Technology Press, 2019) Buczkowska, Mariola
    Two-dimensional deformations induced by electric field in twisted nematic cells filled with liquid crystal possessing flexoelectric properties were simulated numerically. The influence of chiral dopants on the occurrence and structure of the spatially periodic patterns was investigated. It was found that the chirality influences mainly the direction of the periodic patterns whereas the threshold voltage for deformation and the width of the stripes are weakly affected.
  • Pozycja
    Influence of tilted surface alignment on flexoelectric domains in twisted nematic layers
    (Wydawnictwo Politechniki Łódzkiej, 2017) Buczkowska, Mariola; Derfel, Grzegorz
    The small deformations induced by electric field in twisted flexoelectric nematic layers were simulated numerically. The onedimensional (i.e. homogeneous over the whole area of the layer) and two-dimensional (i.e. spatially periodic flexoelectric domains) deformations were considered. It was shown that the periodic deformations do not arise if sufficiently high pretilt angle is imposed by the boundary conditions. The value of pretilt angle necessary for elimination of domains increases with the flexoelectric coefficient e33. This result is of practical meaning because the flexoelectric domains are undesirable from an applicative point of view since they destroy the homogeneous appearance of the area of an excited pixel of a display.
  • Pozycja
    Two-dimensional deformations in twisted flexoelectric nematic cells.
    (Wydawnictwo Politechniki Łódzkiej, 2016) Derfel, Grzegorz; Buczkowska, Mariola
    Electric field induced deformations occurring in twisted nematic cells filled with liquid crystalline material possessing flexoelectric properties were simulated numerically. The aim of computations was to compare the two-dimensional periodic deformations with one-dimensional distortions reported in our earlier paper occurring in the same cells. It was found that the periodically deformed structures have lower free energy counted per unit area of the layer than the one-dimensional deformations.