Sökning: "near-field optical microscopy"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden near-field optical microscopy.

  1. 1. Design and applications of an aperture-type near-field scanning optical microscope

    Författare :Juris Prikulis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; surface plasmons; SERS; surface-enhanced Raman scattering; metal nonparticles; near-field scanning optical microscopy; NSOM;

    Sammanfattning : .... LÄS MER

  2. 2. 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. 3. Near-field scanning optical microscopy and fractal characterization with atomic force microscopy and other methods

    Författare :Anders Mannelquist; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Fysik;

    Sammanfattning : This thesis is devoted to the development of near-field scanning optical microscopy (NSOM) for aqueous solutions and to fractal characterization of steel surfaces with atomic force microscopy (AFM) and other methods. NSOM combines optical properties from a light microscope and the technique of scanning probe microscopy, SPM (invented in the early 1980’s). LÄS MER

  4. 4. Impact of carrier localization on recombination in InGaN quantum wells with nonbasal crystallographic orientations

    Författare :Ruslan Ivanov; Saulius Marcinkevičius; Nicolas Grandjean; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; InGaN; quantum well; semipolar; nonpolar; near-field microscopy; carrier localization; carrier transport; optical polarization; Fysik; Physics;

    Sammanfattning : The modern InGaN technology demonstrates high efficiencies only in the blue spectral region and low current operation modes. The growth of InGaN quantum wells (QWs) on nonbasal crystallographic planes (NBP) has potential to deliver high-power blue and green light emitting diodes and lasers. LÄS MER

  5. 5. Optical properties and degradation of deep ultraviolet AIGaN-based light-emitting diodes

    Författare :Andrea Pinos; Saulius Marcinkevicius; Andreas Hangleiter; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; AIGaN; deep-UV LEDs; polarization fields; screening; exciton binding energy; alloy fluctuations; near-field microscopy; carrier dynamics; LED aging; Optics; Optik;

    Sammanfattning : .... LÄS MER