Sökning: "2D-material"

Visar resultat 1 - 5 av 12 uppsatser innehållade ordet 2D-material.

  1. 1. A study of the triboelectricity of 2D materials: MoS2, WS2 and MoO3 : Analyzing measurements from a triboelectric nanogenerator

    Kandidat-uppsats, Mittuniversitetet/Institutionen för naturvetenskap

    Författare :Simon Kilman; [2022]
    Nyckelord :2D-material; MoS2; WS2; MoO3; triboelektrisk nanogenerator; TENG; triboelektrisk effekt; triboelektrisk serie; kontaktelektrifiering.;

    Sammanfattning : Detta projekts mål har varit att undersöka tre olika 2D-materials triboelektriska egenskaper och därmed placera dem i en triboelektrisk serie. Detta utfördes genom att använda en triboelektrisk nanogenerator (TENG) och mäta den resulterande spänningen. Tio stycken motmaterial applicerades mot varje 2D-material på nanogeneratorn. LÄS MER

  3. 2. First Principles Studies Of 2D Magnets

    Kandidat-uppsats,

    Författare :Yahya Fayazi; Linus Jacobsson; Folke Gustafsson; [2022]
    Nyckelord :2D material; ab initio; magnet; Quantum Espresso; Density Functional Theory; DFT; CrCl3; CrBr3; CrI3; 2D material; 2 dimensionella material; två dimensionella material;

    Sammanfattning : The aim of this project is to examine the electric and magneticproperties of three monolayer chromium trihalides when doped withdifferent transitions metals, that is CrXY_6, where X=(Mn,Fe,Co,Ni,V)and Y=(Cl,Br,I). The calculations were made using the software programQuantum Espresso that used density functional theory to solveSchrödinger’s equation. LÄS MER

  4. 3. 2D-material nanocomposites with nonlinear optical properties for laser protection

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

    Författare :Nils Ross; [2021]
    Nyckelord :optical power limiting; OPL; laser protection; nanocomposites; 2D-materials; graphene oxide; MXene; Ti3C2; melting gel; graphene; two-dimensional materials; nonlinear optical properties; NLO; spectroscopy;

    Sammanfattning : Lasers are increasingly used for a wide range of different applications for both civil and military purposes. Due to the distinct properties of laser light, use of lasers often comes with a risk of damage to the human eye and other optical sensors. Therefore, an effective laser protection is needed. LÄS MER

  5. 4. Black phosphorous sample preparation for ultrafast electron diffraction studies

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

    Författare :Rebecca Ahrling; [2020]
    Nyckelord :Graphene; Black phosphorus; electron diffraction; 2D material; Technology and Engineering;

    Sammanfattning : Since 2004 when mechanical exfoliation was first utilised to produce single layered samples of graphite, 2D materials have gained interest in the scientific community. With the prerequisite that the initial bulk material has a layered structure, these 2D materials have created an opportunity to examine materials on a very small scale as well as opening the possibility of creating smaller electrical components for industrial and commercial use, with well-known and documented parameters. LÄS MER

  7. 5. Angular dependence of the Raman active phonon modes of Black Phosphorus

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

    Författare :Armand Dominguez; [2019]
    Nyckelord :Black Phosphorus; Raman Spectroscopy; Physics and Astronomy;

    Sammanfattning : This Master’s project presents on the angular dependence of the intensity of the Raman active phonon modes of Black Phosphorus (BP), a layered 2D material with unique and attractive characteristics to the scientific and engineering community. Raman spectroscopy is an indispensable tool in quick and unobtrusive analysis of chemical structures. LÄS MER