Sökning: "Near- field Enhancement"

Visar resultat 1 - 5 av 24 avhandlingar innehållade orden Near- field Enhancement.

  1. 1. Nanoplasmonic Enhancement of Photon-to-Electron Conversion in Functionalized Iron Oxide Photoanodes

    Författare :Beniamino Iandolo; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Photon-to-Electron Conversion; Hydrogen; Near-field Enhancement; Iron Oxide; Nanoparticles; Localized Plasmons; Water Splitting;

    Sammanfattning : The ever increasing energy demand of modern society clashes with the accelerating depletion of the fossil fuels from which most of this energy is taken today. Moreover, fossil fuels consumption poses a severe threat on the Earth’s environment and climate through global warming. LÄS MER

  3. 2. Near-Field Radiative Heat Transfer between Plasmonic Nanostructures

    Författare :Jin Dai; Min Yan; Philippe Ben-Abdallah; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fysik; Physics; Energy Technology; Energiteknik;

    Sammanfattning : Radiative heat transfer (RHT) due to coupled electromagnetic near field scan significantly exceed that dictated by Planck’s law. Understanding such phenomenon is not only of fundamental scientific interest, but also relevant to a broad range of applications especially connected to nanotechnologies. LÄS MER

  4. 3. Photoelectrochemical Processes on Fe2O3 Based Model Anodes

    Författare :Beniamino Iandolo; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Near- field Enhancement; Hydrogen; Hematite; Water Splitting; Flatband Potential; Surface States.; Localized Plasmons; Nanoparticles;

    Sammanfattning : One possibility to partially satisfy the ever-increasing energy needs of modern society, without compromising the Earth’s environment through e.g. global warming, consists in harvesting solar energy and storing it as hydrogen produced from water splitting. This can potentially be achieved on a large scale using photoelectrochemical (PEC) cells. LÄS MER

  5. 4. Nanoplasmonics for solar cells

    Författare :Viktoria Gusak; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; enhanced near-field; adsorption; titanium dioxide; Localized Surface Plasmon Resonance; amorphous hydrogenated Silicon; diffusion; Langmuir kinetics; Dye-Sensitized Solar Cell; plasmonic nanoparticle; mesoporous material; diffusion-front model;

    Sammanfattning : The main source of our energy system, the fossil fuels, will eventually be depleted and also pose environmental and climate hazards. There is thus a need for alternative, renewable energy sources. Solar (photovoltaic) cells will play an important role as one of them. LÄS MER

  7. 5. Electron transport properties of graphene and graphene field-effect devices studied experimentally

    Författare :Youngwoo Nam; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; dual-gated graphene field effect devices; thermopower; quantum Hall effect; graphene; Aharonov-Bohm effect; chemical vapour deposition;

    Sammanfattning : This thesis contains experimental studies on electronic transport properties of graphene with the Aharonov-Bohm (AB) effect, thermopower (TEP) measurements, dual-gated graphene field effect devices, and quantum Hall effect (QHE). Firstly, in an effort to enhance the AB effect in graphene, we place superconducting-metal (aluminium) or normal-metal (gold) mirrors on the graphene rings. LÄS MER