Sökning: "ferroelectricity"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet ferroelectricity.

  1. 1. Integration of Ferroelectric HfO2 onto a III-V Nanowire Platform

    Författare :Anton E. O. Persson; Nanoelektronik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ferroelectricity; ferroelectric FET; ferroelectric tunnel junction; tunnel field effect transistors; HZO; III-V; nanowire;

    Sammanfattning : The discovery of ferroelectricity in CMOS-compatible oxides, such as doped hafnium oxide, has opened new possibilities for electronics by reviving the use of ferroelectric implementations on modern technology platforms. This thesis presents the ground-up integration of ferroelectric HfO2 on a thermally sensitive III-V nanowire platform leading to the successful implementation of ferroelectric transistors (FeFETs), tunnel junctions (FTJs), and varactors for mm-wave applications. LÄS MER

  3. 2. Rotational viscosity and dielectric biaxiality in chiral smectic C liquid crystals

    Författare :Marius Buivydas; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; rotational viscosity; chirality; chiral smectic; liquid crystals; dielectric anisotropy; ferromagnetism; dielectric biaxality; ferroelectricity;

    Sammanfattning : .... LÄS MER

  4. 3. Phase characterization of polar liquid crystals using dielectric spectroscopy

    Författare :Jan Lagerwall; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surface-induced phases; soft mode; dielectric spectroscopy; chiral-dopant mixtures; antiferroelectricity; ferroelectricity; Goldstone mode; polar liquid crystals;

    Sammanfattning : .... LÄS MER

  5. 4. Development of fast-switching chiral smectic electro-optic devices

    Författare :Marek Matuszczyk; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electroclinic effect; surface stabilized structure; black mask; liquid crystels; orthogonal phases; ferroelectric liquid crystals; displays; titled phases; smectic; SSFLC; multiplexing; alignment; light valves; ferroelectricity; mesophates; dither; light modulators; chirality; dielectric anistropy; polarization; nematic;

    Sammanfattning : .... LÄS MER

  7. 5. Electronic addressing of ferroelectric liquid crystals

    Författare :Tomasz Matuszczyk; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 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