Sökning: "Liquid crystals"

Visar resultat 1 - 5 av 132 avhandlingar innehållade orden Liquid crystals.

  1. 1. Liquid Crystals in Guided Wave Optics

    Författare :Giusy Scalia; Chalmers University of Technology; []
    Nyckelord :antiferroelectric liquid crystals; fully-leaky guided mode; ortho-conics; waveguide; liquid crystals; anisotropy;

    Sammanfattning : Liquid crystals are unique optical materials due to their large effective electrooptic and opto-optic coefficients. Currently, liquid crystals are primarily used in flat-panel dis-plays, but there is also an increasing number of nondisplay applications requiring new types of devices employing materials with unique optical properties. LÄS MER

  2. 2. Electronic addressing of ferroelectric liquid crystals

    Författare :Tomasz Matuszczyk; Chalmers University of Technology; []
    Nyckelord :multiplexing; smectic; displays; ferroelectricity; black mask; polarization; mesophases; light modulators; surface-stabilized structure; light valve; dielectric anisotropy; polarized light; liquid crystals; chirality; ferroelectric liquid crystals; dither;

    Sammanfattning : .... LÄS MER

  3. 3. Optical properties and helicity in liquid crystals

    Författare :Anders Dahlgren; Chalmers University of Technology; []
    Nyckelord :de Vries formula; smectic A*; smectic helix; Poincaré sphere; homeotropic alignment; chiral; light switch; birefringence; electroclinic; diffraction method; indicatrix; phase grating; helial pitch; snisotropy; liquid crystals; smectic C*; handedness; book-shelf geometry; Cano method; ferroelectric; biaxiality; dielectric tensor;

    Sammanfattning : .... LÄS MER

  4. 4. Molecular Structure in Liquid Crystals Studied by NMR

    Författare :Johan Thaning; Arnold Maliniak; Claudio Zannoni; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; NMR; Maximum Entropy; APME; Dipolar couplings; Liquid Crystals; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : This thesis is focused on structure determinations of molecules in liquid crystals using NMR. The systems described here exhibit orders ranging from nearly isotropic to essentially solid. LÄS MER

  5. 5. Dielectric relaxation spectroscopy of chiral smectic liquid crystals

    Författare :Fathi M. Gouda; Chalmers University of Technology; []
    Nyckelord :; dielectric relaxation measurement; goldstone mode; liquid crystals; soft mode; polarisation mode; perpendicular component; tilt fluctuation;

    Sammanfattning : .... LÄS MER