Sökning: "solid-state devices"

Visar resultat 16 - 20 av 97 avhandlingar innehållade orden solid-state devices.

  1. 16. Hybrid superconductor junctions with diluted PtNi ferromagnetic interlayer

    Författare :Taras Golod; Vladimir M. Krasnov; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Supraledning; Low temperature physics; Lågtemperaturfysik; materiefysik; Physics Of Matter; Solid State Physics; fasta tillståndets fysik;

    Sammanfattning : This thesis describes experimental investigation of thin films made of diluted Pt 1-x Ni x ferromagnet alloy and Nb-Pt 1-x -Nb Josephson junctions. Such Hybrid Superconductor-Ferromagnet (S-F) Structures are of significant interest because of the new physics involved and possible applications in low temperature and spintronic devices. LÄS MER

  3. 17. Photo-polymerization as a tool for engineering the active material in organic field-effect transistors

    Författare :Andrzej Dzwilewski; Ludvig Edman; Xavier Crispin; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Field-effect transistor; photo-polymerization; PCBM; C60; Fullerene; Physics; Fysik; fasta tillståndets fysik; Solid State Physics;

    Sammanfattning : The emergence of organic semiconductors is exciting since it promises to open up for straightforward and low-cost fabrication of a wide range of efficient and novel electronic devices. However, in order for this promise to become reality it is critical that new and functional fabrication techniques are developed. LÄS MER

  4. 18. Nanoscale Characterisation of Barriers to Electron Conduction in ZnO Varistor Materials

    Författare :Mattias Elfwing; Peter Lagerlöf; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; ZnO varistor material; TEM; SEM; EBIC; ESEM; electron holography; Materialvetenskap; Materials science; Teknisk materialvetenskap; Solid State Physics; fasta tillståndets fysik;

    Sammanfattning : The work presented in this thesis is concerned with the microstructure of zinc oxide varistor materials used in surge protecting devices. This class of material has been characterised with special emphasis on the functional microstructure and the development of the microstructure during sintering. LÄS MER

  5. 19. Magnetic materials with tunable thermal, electrical, and dynamic properties : An experimental study of magnetocaloric, multiferroic, and spin-glass materials

    Författare :Matthias Hudl; Per Nordblad; DD Sarma; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Magnetocalorics; multiferroics; spin glasses; magnetization; polarization; spin-dimensionality; Fasta tillståndets fysik; Solid State Physics;

    Sammanfattning : This thesis concerns and combines the results of experimental studies of magnetocaloric, multiferroic and spin-glass materials, using SQUID magnetometry as the main characteriza-tion technique. The magnetocaloric effect offers an interesting new technology for cooling and heating applications. LÄS MER

  7. 20. Optical properties of point defects in insulators and of transition metal dichalcogenides

    Författare :Christopher Linderälv; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; luminescence quenching; charge transition levels; excitons; transition metal dichalcogenides; monolayer alloys; solid state lighting; color centers; oxygen vacancies; moiré structures; wide band gap oxides;

    Sammanfattning : There is a need for new or modified materials, both to improve current devices and to create novel functionalities. Engineering materials to target specific functionalities requires a better understanding of how microscopic processes impact materials properties. LÄS MER