Sökning: "Metamaterials"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet Metamaterials.

  1. 1. Numerical Simulations of Wave Propagation between a Left-Handed Material and a Right-Handed Material

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

    Författare :Balwan Rana; [2021]
    Nyckelord :Negative-Index Material; NIM; Positive-Index Material; RHM; Backward- Wave Propagation; Step-Index Interface; Graded-Index Interface; Left-Handed Material; LHM; Right-Handed Material; RHM; Analytical Solution; Validation; Negativt-Index Material; NIM; Positivt-Index Material; PIM; Bakåtvåg-utbredning; Steg-Index Gränssnitt; Gradering-Index Gränssnitt; Vänsterhänt Material; LHM; Högerhänt Material; RHM; Analytisk Lösning; Validering;

    Sammanfattning : The discovery of metamaterials has led to major advances in different fields of physics including optics, microwave engineering and acoustics. Specific to theoretical electromagnetism, the introduction of metamaterials have led to the development of negative-index materials (NIMs) with simultaneous negative permittivity and negative permeability with backward-wave propagation. LÄS MER

  3. 2. Electromagnetic Phase Engineering With Metamaterials

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Olof Sjödin; [2021]
    Nyckelord :Applied Physics; Electromagnetism; Metamaterials; MIM; Plasmonics; FEM; Reflector design; Phase engineering; Tillämpad fysik; Elektromagnetism; Metamaterial; MIM; Plasmonics; FEM; Reflektor design; Fasdesign;

    Sammanfattning : Metamaterials are artificially designed materials with desired electromagneticresponses for advanced wave manipulation. Their key constituent is often somenoble metal, thanks to its well localized plasmonic effects with highextinction cross section. LÄS MER

  4. 3. Towards a tunable nanometer thick flat lens

    Magister-uppsats, Uppsala universitet/Materialfysik

    Författare :Hugo Laurell; Johan Hillborg; [2018]
    Nyckelord :Metamaterial; COMSOL; Fano resonances; Surface plasmon polariton; Localized surface plasmons; Nanophotonics;

    Sammanfattning : This report examines the cross sections of silver microresonators subjected to an incident light with different polarization. The microresonators had different geometries with and without broken symmetries. LÄS MER

  5. 4. Study of Two-dimensional Kirigami in Different Materials

    Kandidat-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Joseph Noble; [2018]
    Nyckelord :FEM; Material Selection; Metamaterial; Stiffness Tuning; Venepuncture; FEM; materialval; metamaterial; styvhetsanpassning; venpunktion;

    Sammanfattning : De mekaniska egenskaperna hos ett tvådimensionellt material kan ändras med hjälp av Kirigami, som är en japansk klippkonst i papper. Material där man med geometriförändringar ändrar materialegenskaperna kallas metamaterial. LÄS MER

  7. 5. Study of two - dimensional Kirigami in different materials

    Kandidat-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Joseph Noble; [2018]
    Nyckelord :FEM; Material Selection; Metamaterial; Stiffness Tuning; Venepuncture; FEM; materialval; metamaterial; styvhetsanpassning; venpunktion;

    Sammanfattning : The mechanical properties of a 2D material can be altered with Kirigami, a Japanese paper cutting art. Such altered materials are called metamaterials – where a certain geometry is imposed on a material to change its material properties. LÄS MER