Sökning: "four-point probe"

Hittade 5 uppsatser innehållade orden four-point probe.

  1. 1. Conductive metal-organic frameworks (MOFs) and possible applications

    Master-uppsats, Uppsala universitet/Institutionen för materialvetenskap

    Författare :Meghdad Hosseinzadegan; [2022]
    Nyckelord :;

    Sammanfattning : Metal-organic frameworks (MOFs) are a class of hybrid organic/inorganic materials with permanent porous structure. Whilst there are virtually endless possible selection of metal ions and organic ligands to build up a MOF structure, intrinsically conductive MOFs are rare, relatively new, and our knowledge on their conductivity and charge transport mechanisms is limited. LÄS MER

  3. 2. Method evaluation : Electrical surface resistance measurements on coated conductive textiles

    Master-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Grete Wisung; [2018]
    Nyckelord :Electrical surface resistance; four-point probe; conductive textiles; conductive coatings; anisotropic materials.;

    Sammanfattning :  This thesis has evaluated how electrical surface resistance can be measured on conductive coated textiles using two different probes. The electrical surface resistance is a measurement for how difficult it is for current to flow through a material. LÄS MER

  4. 3. Study of CVD deposited i-ZnO layers in CIGS thin film solar cells

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Fredrik Larsson; [2015]
    Nyckelord :CVD; CIGS; intrinsic; ZnO; thin film; solar cell;

    Sammanfattning : CIGS thin film solar cells usually include a thin layer of intrinsic zinc oxide (i-ZnO) deposited on a CdS buffer layer by sputtering. However an interest has grown in using chemical vapor deposition (CVD) instead. LÄS MER

  5. 4. Some aspects of ionic liquid blends and additives influencing bulk conductivity of commercial base paper

    Master-uppsats, Karlstads universitet/Avdelningen för kemiteknik

    Författare :Salman Javaid; [2013]
    Nyckelord :ionic liquids; ion conductive paper; 1-butyl-3-methylimidazolium tetrafluoroborate; 1-butyl-3-methylimidazolium hexafluorophosphate; conducting polymer;

    Sammanfattning : In this study, bulk conductivity of commercial base paper impregnated with different ionic liquids blends and additives, through bench coating was investigated. Bulk conductivity of base paper, ion conductive paper and surface sized ion conductive papers with and without the influence of calendering were evaluated at different concentrations of ionic liquids using at resistivity cell and four point probe technique. LÄS MER

  7. 5. Sputtring av Ti-Si-C-Ag beläggningar från sammansatta sputterkällor

    Master-uppsats, Tunnfilmsfysik

    Författare :Gustav Edman Jönsson; [2009]
    Nyckelord :PVD; thin film physics; nanocomposite; electric contact; XRD; SEM; EDX; PVD; tunnfilmsfysik; nanokomposit; elektrisk kontakt; XRD; SEM; EDX;

    Sammanfattning : Idag används guld som kontaktmaterial på elektriska kontakter för lågströmstillämpningar. Guldhar emellertid låg nötningsbeständighet, är dyrt och miljömässigt påfrestande att utvinna. Ettalternativt kontaktmaterial till guld är nanokomposit Ti-Si-C-Ag belagt medlikströmsmagnetronsputtring. LÄS MER