Sökning: "Electrical surface resistance"

Visar resultat 1 - 5 av 25 uppsatser innehållade orden Electrical surface resistance.

  1. 1. Tribological characterization of a ball bearing subjected to an electric field : Electric drivetrain tribology

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Muhammad Umar Farooq; [2023]
    Nyckelord :Ball bearing; electric drivetrain; tribology; electric field; characterization; bearing currents; discharge;

    Sammanfattning : Electric machines are widely used in for instance the automotive industry in electric vehicles and in wind turbines. The electrical machines have mechanical bearings as an integral part used to transmit power and load. In addition, the main function includes reducing friction between interacting surfaces. LÄS MER

  3. 2. Developing an Ar milling process to improve the contact quality to InAs nanowires

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Författare :Chris Mkolongo; [2023]
    Nyckelord :InAs nanowires; Argon milling; Technology and Engineering;

    Sammanfattning : The aim of this work was to develop a stable and reproducible argon milling process for InAs nanowires to remove the native oxide layer that increases electrical resistance. This was done by identifying a few milling parameters and studying them in relation to the milling rate of silicon dioxide (SiO2). LÄS MER

  4. 3. Sputtered Transparent Contact Layers for Bifacial and Tandem Solar Cells

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Solcellsteknik

    Författare :Klara Kiselman; [2022]
    Nyckelord :Solar cells; ITO; indium doped tin oxide; bifacial cell; tandem cell; transparent conductive oxides;

    Sammanfattning : A key to solar cells with lower environmental impact is higher efficiency and reduced material usages. Bifacial solar cells may have a higher efficiency as light can enter from two directions and tandem solar cells may use a larger part of the incoming solar spectrum, increasing the efficiency. LÄS MER

  5. 4. Large Surface Area of Graphene with Controlled Interlayer Spacing

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Hari Hara Sudhan Thangavelu; [2022]
    Nyckelord :pillared graphene; porous structure; energy storage; interlayer galleries.; pelargrafen; porös struktur; energilagring; mellanskiktsgallerier.;

    Sammanfattning : Unique layered structure with excellent electrical, mechanical, thermal, and optical properties gives graphene widespread application. Graphene based materials are extensively studied in the field of energy storage such as batteries, hydrogen storage and supercapacitors (SC’s). LÄS MER

  7. 5. Study of pH effect on the skin in Franz cell by impedance spectroscopy: an attempt to model incontinence effect on the skin.

    Master-uppsats, Malmö universitet/Institutionen för biomedicinsk vetenskap (BMV)

    Författare :Megha Bhavinkumar Patel; [2022]
    Nyckelord :Artificial urine; Electrical impedance spectroscopy EIS ; Incontinence-associated dermatitis IAD ; pH; Stratum corneum SC ; Artificial urine; Electrical impedance spectroscopy EIS ; Incontinence-associated dermatitis IAD ; pH; Stratum corneum SC ;

    Sammanfattning : The human skin is the largest and most complex body organ but accessible and attractive for biomarker sampling and transdermal drug delivery. The two procedures are significantly impacted by several biophysical properties of the skin, especially the pH and stratum corneum (SC)hydration. LÄS MER