Sökning: "ferroelectric"

Visar resultat 1 - 5 av 85 avhandlingar innehållade ordet ferroelectric.

  1. 1. Ferroelectric Na₀₅̣ K₀₅̣ NbO₃ varactors for microwave applications

    Författare :Saeed Abadei; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tunable microwave device; integrated ferroelectric device; NKN; ferroelectric varactor; Na₀₅̣ K₀₅̣ NbO₃; ferroelectric;

    Sammanfattning : .... LÄS MER

  2. 2. Ferroelectric Thin Films on Si-substrate for Tunable Microwave Applications

    Författare :Saeed Abadei; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase shifter; BaxSr1-xTiO3; Tunable microwave device; Ferroelectric Varactor; Paraelectric; Filter; Na0.5K0.5NbO3; Integrated ferroelectric device; SrTiO3; Ferroelectric;

    Sammanfattning : The thesis presents the development of microwave tunable devices based onferroelectric thin films. The main tasks in this work are the fabrication, optimization, andintegration of ferroelectric thin film into Si-MMIC. LÄS MER

  3. 3. Structures and Properties of Ferroelectric Liquid Crystal Displays

    Författare :Marek Matuszczyk; Chalmers University of Technology; []
    Nyckelord :smectic; displays; dielectric anisotropy and biaxiality; surface-stabilized structure; dielectric; paraelectric; liquid crystal alignment; electroclinic effect; grey scale; polarization; multiplexing; liquid crystal LC ; orthogonal and tilted phases; chirality; aligning layer; ferroelectric; polyimide; rubbing; light valves and modulators; SSFLC;

    Sammanfattning : Liquid crystals have unique physical properties as they combine the features of solids and liquids. In thermotropic liquid crystals the degree of order varies with temperature resulting in an appearance of intermediate phases. LÄS MER

  4. 4. Processing and Properties of Ferroelectric Ag(Ta,Nb)O3 Thin Films

    Författare :Jung-Hyuk Koh; KTH; []
    Nyckelord :Ferroelectric; Thin Film; PLD; Tunable device;

    Sammanfattning : High tunability and low loss tangent of ferroelectric thinfilms offer unique opportunity for the development of variousmicrowave devices. Silver tantalate niobate, which showsexcellent microwave properties, was selected for this study. LÄS MER

  5. 5. Ferroelectric Na0.5K0.5NbO3 Thin Films : Processing, Physical Properties and Applications

    Författare :Choong-Rae Cho; KTH; []
    Nyckelord :Ferroelectric thin film; Pulsed Laser Deposition;

    Sammanfattning : This thesis presents the results on the fabrication offerroelectric Na0.5K0.5NbO3(NKN) thin films by pulsed laser deposition (PLD)technique, comprehensive characterization of film properties,and various applications of NKN films. LÄS MER