Sökning: "DIELECTRIC-SPECTROSCOPY"

Visar resultat 1 - 5 av 39 avhandlingar innehållade ordet DIELECTRIC-SPECTROSCOPY.

  1. 1. Watertree dielectric spectroscopy

    Författare :Peter Thärning; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 2. 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

  4. 3. Development and application of high voltage dielectric spectroscopy for diagnosis of medium voltage XLPE cables

    Författare :Peter Werelius; KTH; []
    Nyckelord :dielectric spectroscopy; high voltage; variable frequency; diagnostics; non-disgnostics;

    Sammanfattning : When polymer power cables were introduced into mediumvoltage applications in the late 1960s, the degradationphenomenon later referred to aswater treeingwas still unknown. However, this changedwithin a relatively short space of time. LÄS MER

  5. 4. Molecular Arrangement, Electronic Structure and Transport Properties in Surfactant Gel- and Related Systems Studied by Soft X-ray and Dielectric Spectroscopy

    Författare :Johan Gråsjö; Maria Strömme; Jan Swenson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surfactants; surfactant poly-ion gel; water; confined water; XAS; RIXS; dielectric spectroscopy; SAXS; pKa; transport; Fick’s law; Engineering Science with specialization in Nanotechnology and Functional Materials; Teknisk fysik med inriktning mot nanoteknologi och funktionella material;

    Sammanfattning : This thesis concerns studies of aqueous soft matter systems, especially surfactant micelle systems.The aim has been to study the molecular arrangement and electronic structure of the constituents of, as well as transport properties in such a system. LÄS MER

  7. 5. Partial Discharges Studied with Variable Frequency of the Applied Voltage

    Författare :Hans Edin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diagnostic methods; partial discharges; phase resolved; variable frequency; dielectric spectroscopy; dielectric response; harmonics; insulation; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Sammanfattning : This thesis concerns partial discharge (PD) diagnostics withvariable frequency of applied voltage in the frequency range 1mHz - 400 Hz. The exploration of a new type of spectroscopythat combines partial discharge analysis and dielectricresponse is demonstrated. LÄS MER