Sökning: "barrier film"

Visar resultat 21 - 25 av 38 uppsatser innehållade orden barrier film.

  1. 21. Fabrication of Tunneling Field Effect Transistors (TFETs) and the study of graphene

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

    Författare :Carlos Nunez Lobato; [2018]
    Nyckelord :graphene; semiconductor; exfoliation; boron nitride; Physics and Astronomy;

    Sammanfattning : After the discovery of graphene in 2004, a single layer of graphite, the assembly of 2D materials became a promising research area in solid state Physics. This thesis explores fabrication of 2D-heterostructures that aim to probe into graphene’s electronic structure with the Tunneling Field Effect Transistor (TFET). LÄS MER

  3. 22. Development of microelectrodes for electrical measurements in a microfluidic system

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Emma Thomée; [2017]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Transendothelial electrical resistance (TEER) measurements are used to quantitatively monitor cell barrier formation in in vitro models of the blood-brain barrier. TEER measurements in microfluidic in vitro systems are technically problematic and have suffered from poor measurement reproducibility. LÄS MER

  4. 23. Damp Heat Degradation of CIGS Solar Modules

    Master-uppsats, Högskolan Dalarna/Energiteknik

    Författare :Jose Cano Garcia; [2017]
    Nyckelord :CIGS; degradation; damp heat; thin film barrier; barrier; SiN; AlOx; Molybdenum; encapsulant; PET; EVA; PO; relative humidity; moisture;

    Sammanfattning : Due to the short period that some photovoltaic technologies have taken part on the solar energy market, it is crucial to evaluate the long term stability of solar cells belonging to those technologies in order to ensure a minimum lifetime of their performance. Accelerated degradation tests are thus carried out to achieve such goals. LÄS MER

  5. 24. Development of Kraft Lignin and Coating Technique to Prepare Coated Urea Fertilisers with Increased Nutrient Use Efficiency

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Xueyan Xu; [2017]
    Nyckelord :fertilizer coating; lignin; modified lignin; polylactide; slow release; ytbeläggning för gödningsmedel; lignin; modifierad lignin; polylaktid; kontrollerad frisättning;

    Sammanfattning : Coating urea to prepare controlled release N-fertilizer has been considered as an effective way to increase its nutrient use efficiency, thus reduce its waste and the consequent harmful environmental impacts. Inorganic sulphur and synthetic polymers have been used in the industry as coating materials together with utilization of various types of expensive coating equipment which commonly requires also complicated technical setup and controls. LÄS MER

  7. 25. Förstärkande språkstrategier : En kvalitativ studie som beskriver fyra lärares förstärkande språkstrategier ur ett andraspråksperspektiv

    Uppsats för yrkesexamina på avancerad nivå, Örebro universitet/Institutionen för humaniora, utbildnings- och samhällsvetenskap

    Författare :Tove Fernlund; [2017]
    Nyckelord :Body language; reformulations; repetitions; visual aids; second language; linguistic barrier; teachingBody language; reformulations; repetitions; visual aids; second language; linguistic barrier; teaching;

    Sammanfattning : Since no teacher can learn all the languages of the world there is a need to find strategies to deal with students with different linguistic competences and conditions. In this essay, which I write under the Swedish teacher program at Örebro Univiersity, I will follow four teachers into their practice and search for tools they use to increase their chances to reach through to students in the Swedish middle school with Swedish as their second language. LÄS MER