Sökning: "Nanostructured surface"

Visar resultat 1 - 5 av 108 avhandlingar innehållade orden Nanostructured surface.

  1. 1. Plasmons in Nanostructured Graphene

    Författare :Tobias Wenger; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; linear response theory; surface plasmon-polaritons; Plasmons; surface electrodynamics; plasmonics; graphene; random phase approximation;

    Sammanfattning : Plasmons, collective electron density oscillations, provide physicists with intriguing challenges and possibilities. The inherent many-body properties of the plasmons together with their ability to localize light into small volumes make the plasmons interesting from both a purely theoretical viewpoint and an applications point of view. LÄS MER

  2. 2. Structure, Morphology, and Catalytic Properties of CuOx/CeO2 Model Catalysts

    Författare :Björn Skårman; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Synchrotron radiation; High-energy Diffraction; X-ray Absorption Fine Structure Spectroscopy.; Chemical technology and engineering; Kemiteknik och kemisk teknologi; Chemistry; Kemi; Material technology; Materiallära; materialteknik; X-ray photoelectron spectroscopy; Atomic force microscopy; Gatan Image Filter GIF ; Energy-filtered TEM; High-resolution electron microscopy; Inert gas condensation IGC ; rf Magnetron sputtering; Thermal activation; Batch reactor; Carbon monoxide oxidation; Surface sensitivity; Catalytic anisotropy; Growth; Nucleation; Topography; Roughness; Core-shell structures; Morphology; Nanostructured; Nanocomposite; Nanoparticles; Surface structure; Polycrystalline surfaces; Thin films; Copper oxide; Cerium dioxide CeO2 ; Ceria;

    Sammanfattning : Cerium dioxide, or ceria, is a chemically stable oxygen ion conducting material with a capacity to store and release oxygen, and is therefore extensively used in combustion catalysts. The Cu-Ce-O system has been identified as one of the most active catalysts for the combustion of carbon monoxide. LÄS MER

  3. 3. Nanostructured Transition Metal Oxides in Cleantech Application : Gas Sensors, Photocatalysis, Self-cleaning Surfaces Based on TiO2, WO3 and NiO

    Författare :Zareh Topalian; Lars Österlund; Andrew Mills; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gas sensing; Self-cleaning; photo-fixation; photocatalysis; TiO2; WO3; NiO; Surface engineering; Ytbehandlingsteknik; Functional materials; Funktionella material; Engineering Science with specialization in Solid State Physics; Teknisk fysik med inriktning mot fasta tillståndets fysik;

    Sammanfattning : This thesis focuses on the application of nanocrystalline transition metal oxide TiO2, WO3 and NiO thin films in new “green” building technologies. Specifically, their physicochemical properties in photocatalytic, self-cleaning and gas sensing applications are studied. LÄS MER

  4. 4. Nanostructured ZnO electrodes for solar cell applications

    Författare :Karin Keis; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Physics; Zinc oxide; nanostructured; mesoporous; photoelectrochemistry; solar cells; Fysik; Physics; Fysik; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : In this thesis the possibilities of using nanostructured dye-sensitized ZnO electrodes for solar energy conversion in photoelectrochemical solar cells are investigated. In order to characterize the photoelectrochemical properties of unsensitized ZnO films, measurements were performed using a short laser pulse (laser flash induced current transients) and under continuous illumination (steady-state). LÄS MER

  5. 5. Nanostructured Artificial Biointerfaces

    Författare :Hossein Agheli; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Colloidal Lithography; Electrostatic Self Assembly; Nanofabrication; Cell;

    Sammanfattning : AbstractThe interactions occurring between biological systems and the surface of biomaterials hasbeen an area of strong research focus for a number of decades. There has been a realisation ofthe importance of macromolecular interactions and a consequent need to understandbiointerfacial events at the nanometer length-scale. LÄS MER