Sökning: "Grafit egenskaper"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Grafit egenskaper.

  1. 1. Carbon-coated Lead Halide Perovskite Quantum Dots and Copper(I)Iodide Coated Copper Nanowire Electrodes for Flexible Solar Cells

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Albin Andersson; [2022]
    Nyckelord :Nanotechnology; solar cells; perovskite; quantum dots; nanowire; thin film electrodes; nanoteknologi; solceller; perovskit; kvantprickar; nanotrådar;

    Sammanfattning : Lead Halide Perovskite is emerging quickly as a promising material for the future solar cellsthanks to their inherent good optoelectrical properties along with their cheap and facile fabri-cation. However, their main drawback before commercialization is their weak stability. LÄS MER

  3. 2. Development of patient-specific fetal head phantom for experimental evaluation of vacuum assisted delivery

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Maria Pop; [2021]
    Nyckelord :Vacuum assisted delivery; Vacuum extractor device; Traction force; Vacuum pressure; Fetal head phantom; Ultrasound imaging; Sonomicrometry;

    Sammanfattning : Vacuum assisted delivery (VAD) is a common procedure used in the final stage of labor in the situation of a difficult natural delivery. Since the only biomechanical studies concerning the clinical safe traction force were conducted during 70s using simplified models to mimic the fetal head, concerns remain regarding the side effects of this medical intervention when applying high levels of traction forces. LÄS MER

  4. 3. Undersökning av lakningspotential och kristallareafördelning av opaka mineral i bergarter från Ekobacken, Värmdö kommun

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Andrei Rapp; [2019]
    Nyckelord :Acid Rock Drainage; drainage potential; crystal-area distibution; sulphide minerals; Ekobacken; surt lakvatten; lakningspotential; kristallareafördelning; sulfidmineral; Ekobacken;

    Sammanfattning : Ekobacken, Värmdö kommun, har problem med surt yt- och grundvatten med höga metallhalter. Uppmärksamheten har riktats mot berggrunden som krossats och lagrats i deponihögar. Bildningen av sur lak styrs av flertalet geokemiska egenskaper, bland annat vilka sulfidmineral som förekommer och deras kristallstruktur. LÄS MER

  5. 4. Investigation of thermal conductivity in thin graphite films through time-resolved X-ray diffraction

    Kandidat-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Axel Stenquist; [2019]
    Nyckelord :Ultra fast X-ray diffraction; graphite; thin graphite films; thermal conductivity; Physics and Astronomy;

    Sammanfattning : Knowledge about thermal properties of nanoscale graphite is essential in order to realize the many promising applications of carbon based nanomaterials. This thesis reports how samples of thin graphite films on nickel substrates were investigated using time-resolved X-ray diffraction (TRXD) at the FemtoMAX beamline at the MAX IV facility. LÄS MER

  7. 5. Graphite sheets and graphite gap pads used as thermal interface materials : A thermal and mechanical evaluation

    Master-uppsats, KTH/Tillämpad termodynamik och kylteknik

    Författare :Love Fältström; [2014]
    Nyckelord :Thermal interface material; TIM; cooling; cooling of electronics; ASTM D5470; graphite; graphite sheet; gap pad; thermal management; thermal design; Termiska interface material; TIM; kylteknik; kylning av elektronik; ASTM D5470; grafit; grafitfilm; gap pad; termisk design;

    Sammanfattning : The electronic market is continually moving towards higher power densities. As a result, the demand on the cooling is increasing. Focus has to be put on the whole thermal management chain, from the component to be cooled to the ambient. LÄS MER