Sökning: "plasmons"

Visar resultat 31 - 35 av 47 avhandlingar innehållade ordet plasmons.

  1. 31. Optical Imaging and Spectroscopy of Metal Nanostructures

    Författare :Juris Prikulis; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanoparticles; surface plasmon resonance; surface-enhanced Raman spectroscopy; near-field optical microscopy; optical tweezers;

    Sammanfattning : Noble metal structures with size in the sub 100 nm range exhibit extraordinary optical properties due to collective oscillations of conduction electrons, the surface plasmon resonances (SPR). The most remarkable feature of these structures is the ability to redistribute electromagnetic radiation and concentrate strong fields near the surface. LÄS MER

  3. 32. Nanoplasmonic Biosensors compatible with Artificial Cell Membranes

    Författare :Andreas Dahlin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; gold; colloidal lithography; optical spectroscopy; membrane; lipid bilayer; quartz crystal microbalance; nanofabrication; biosensor; localized surface plasmon resonance; vesicle;

    Sammanfattning : Within life science, there is currently an intense search for novel techniques that enable efficient and reliable analysis of biomolecular interactions. Such methods have future applications within medical diagnostics and drug development, as well as within proteomic research in general. LÄS MER

  4. 33. Phase retrieval method for quantitative terahertz spectroscopy in reflection geometry

    Författare :Kasturie Jatkar; Stefano Bonetti; Magnus Berntsen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Terahertz; reflection; THz spectroscopy; InSb; Physics; fysik;

    Sammanfattning : Terahertz time-domain spectroscopy (THz-TDS) is a reliable technique used for studying the complex optical properties of materials. Its frequency range makes it suitable for detecting low-energy collective excitations such as phonons, magnons, and plasmons. THz-TDS in transmission geometry has gained much attention over the years. LÄS MER

  5. 34. Plasma Oscillations in Holographic Quantum Matter

    Författare :Marcus Tornsö; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; holography; quasinormal modes; gauge gravity duality; graphene; strong coupling; plasmonics; strongly correlated media;

    Sammanfattning : In this thesis we explore strongly correlated matter in the framework of holographic duality. Specifically, we examine the quasinormal modes of such systems, and we extend the current framework to efficiently and naturally cover plasmons and other collective modes that may be found within strongly correlated matter. LÄS MER

  7. 35. Optical properties of nanometer disks, holes and rings prepared by colloidal lithography

    Författare :Per Hanarp; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; colloidal lithography; nanoparticles; nanorings; localized surface plasmon resonance; electrostatic self-assembly; nanofabrication; sub-wavelength holes;

    Sammanfattning : The optical properties of nanostructures prepared by colloidal lithography are studied. Colloidal lithography is a fabrication approach based on a self-assembling pattern definition. An electrostatically self-assembled array of nanoparticles is used as a mask and combined with etching or deposition processes. LÄS MER