Sökning: "raman spectroscopy"

Visar resultat 21 - 25 av 111 uppsatser innehållade orden raman spectroscopy.

  1. 21. Synthesis of single-layer graphene and studying oxidation behaviour of copper foil.

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Mouna Rafei; [2020]
    Nyckelord :;

    Sammanfattning : The ultimate aim of the current study is to investigate the electron transfer from copper (Cu) to single layer graphene through a thin Cu oxide layer. Therefore the project is divided into two main parts. LÄS MER

  3. 22. Sputtering of High Quality Layered MoS2 films

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

    Författare :Sari Abid Al Shaybany; [2020]
    Nyckelord :MoS2; molybdenum; molybdenum disulfide; sputtering; magnetron sputtering; high quality; sulfur; H2S; argon; pressure; temperature; high temperature; monolayer; few layers; large scale;

    Sammanfattning : We have deposited bulk, monolayer and few-layers as well as large-scale 2D layered MoS2 thin films by pulsed DC magnetron sputtering from an MoS2 target. MoS2 has gained great attention lately, together with other layered Transition Metal Dichalcogenides (TMDCs), for its unique optical and electrical properties with thickness-dependent bandgap. LÄS MER

  4. 23. Depth-resolved Raman Spectroscopy and X-ray Photoelectron Spectroscopy to Evaluate the Structural and Chemical Properties of Chemically Strenghtened Glasses

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

    Författare :Felix Bengtsson; [2020]
    Nyckelord :;

    Sammanfattning : In this thesis, the structural and chemical properties of a series of titanosilicate glasseswere investigated. The glasses were subjected to a chemical strengthening process(with K^+ replacing Na^+) at four different treatment temperatures and studied withXPS- and Raman spectroscopy. LÄS MER

  5. 24. Effect of iron redox state on crystallization behaviour of Fayalite slags

    Master-uppsats, KTH/Materialvetenskap

    Författare :Paolo Mai; [2020]
    Nyckelord :Copper smelting; Slag; Magnesium Oxide; Iron redox equilibria; Optical basicity; Raman spectroscopy.; Smältning av koppar; Slagg; Magnesiumoxid; Järnredoxjämvikt; Optisk basicitet; Ramanspektroskopi.;

    Sammanfattning : In the copper smelting processes, the viscosity of the matte and the slag is an important factor for establishing efficiency. Impurities in the concentrates affect the viscosity not only by changing the melt structure but also by promoting precipitation of solid phase which sharply rises it. LÄS MER

  7. 25. Optical Characterization of Lignin Nanoparticles

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Kristoffer Linder; [2020]
    Nyckelord :lignin; nanoparticles; nanoparticle; optical characterization; optical properties; surface plasmon resonance;

    Sammanfattning : Lignin is one of the main components of wood and plants that acts as a kind of glue providing mechanical strength. It is a main polymer component composed from three phenolic structures, i.e. p-hydroxyphenyl (H), guaiacyl (G) and syringyl (S) units. LÄS MER