Sökning: "surface plasmons"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden surface plasmons.

  1. 1. Impact of nanoparticle plasmons on photoluminescense and upconversion processes in ZnO

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Solcellsteknik; Uppsala universitet/Fysikalisk kemi

    Författare :Axel Gudmundsson; [2023]
    Nyckelord :Photoluminescence; Upconversion; Plasmons; ZnO;

    Sammanfattning : The increasing prevalence of glass windows in modern buildings has raised the demand for solar control windows that possess climate-appropriate properties. Glass windows made of abundant and low-cost materials which can both decrease the heating energy consumption as well as enhance the light climate indoors would sufficiently meet the goals of economical yet uplifting buildings. LÄS MER

  3. 2. Fabrication and Optimization of a Nanoplasmonic Chip for Diagnostics

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Jonas Segervald; [2019]
    Nyckelord :AFM; NIL; SPR; SERS; nanohole; nanohole array; nanoimprint lithography; physical vapor deposition; plasma treatment; plasmonic; plasmons; surface plasmon resonance; localized surface plasmon resonance; metal enhanced fluoresence; surface enhanced raman spectroscopy; transmittance; nanoplasmonic; signal enhancement;

    Sammanfattning : To increase the survival rate from infectious- and noncommunicable diseases, reliable diagnostic during the preliminary stages of a disease onset is of vital importance. This is not trivial to achieve, a highly sensitive and selective detection system is needed for measuring the low concentrations of biomarkers available. 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. Photoemission electron microscopy of localized surface plasmons in silver nanostructures: Experiments and simulations

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

    Författare :Robin Sutinen Svärd; [2015]
    Nyckelord :Photoemission electron microscopy; Localized surface plasmon; Ag nanocube; Ag nanoellipsoid; Finite-difference time-domain; Physics and Astronomy;

    Sammanfattning : In this work, spatially resolved localized surface plasmons (LSPs) in individual silver nanocubes and nanoellipsoids are imaged with a photoemission electron microscope (PEEM). Using broadband laser pulses with photon energies below the work function threshold of the material, multiphoton photoemission (MPPE) processes coupled to the LSPs governs the strong enhancement of the plasmonic near-field detected in the PEEM. LÄS MER

  7. 5. Optical and Magneto-Optical Measurements of Plasmonic Magnetic Nanostructures

    Master-uppsats, Uppsala universitet/Materialfysik

    Författare :Sebastian George; [2014]
    Nyckelord :surface plasmons; magnetism;

    Sammanfattning : At the interface between a metal and dielectric, it is possible for an electromagnetic wave to couple with the conduction electrons of the metal to create a coupled oscillation known as a surface plasmon. These surface plasmons can exhibit properties which are not shared with their purely electronic or electromagnetic components. LÄS MER