Sökning: "Daniel Primetzhofer"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Daniel Primetzhofer.

  1. 1. New aspects of electronic interactions of keV ions with matter

    Författare :Barbara Bruckner; Daniel Primetzhofer; Peter Bauer; Marika Schleberger; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ToF-MEIS; LEIS; electronic stopping; charge exchange; scattering potential; Fysik; Physics;

    Sammanfattning : Low- and medium-energy ion scattering are powerful techniques to perform high-resolution depth profiling with sub-nanometer resolution. Typically, ions with primary energies between a few keV and a few hundred keV are used to probe the sample and backscattered projectiles are detected. LÄS MER

  3. 2. Luminescence of Silicon Nanoparticles Synthesized by Ion Implantation

    Författare :Thawatchart Chulapakorn; Anders Hallén; Daniel Primetzhofer; Yanwen Zhang; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silicon nanoparticle; Photoluminescence; Ion beam synthesis; Ion beam analysis; Fysik; Physics;

    Sammanfattning : Silicon nanoparticles (SiNPs) have been shown to display luminescence in the visible range with a peak wavelength depending on the nanoparticle size. This finding is of potential interest for integration of optoelectronic devices in semiconductor technology. LÄS MER

  4. 3. Materials analysis using MeV-ions: fundamental challenges and in-situ applications

    Författare :Karim-Alexandros Kantre; Daniel Primetzhofer; Hans-Christian Hofsäss; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; in-situ characterization; ion beam analysis; heavy ions; reactive thin film growth; materials modification; yttrium oxyhydrides; fuel retention;

    Sammanfattning : The interaction of energetic ions with matter is highly relevant for a wide range of applications. Amongst them, material characterization employing ion beams is widely used due to its capability of high-resolution composition depth profiling. LÄS MER

  5. 4. Case Studies in Ion Beam Assisted Nanostructure Engineering

    Författare :Rajdeep Kaur; Petter Ström; Daniel Primetzhofer; Tuan Tran; Naureen Ghafoor; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ion irradiation; material modification; nanostructures; calcium fluoride; polyimide; etching; Fysik; Physics;

    Sammanfattning : Beams of energetic ions can be used for material analysis and modification. It provides us with a tool featuring unique control over the area, depth and amount of damage in the material. This property of ion beams can be used to generate desired changes in material properties or form nanostructures with specific characteristics in the material. LÄS MER

  7. 5. Beyond scattering – what more can be learned from pulsed keV ion beams?

    Författare :Svenja Lohmann; Daniel Primetzhofer; Andreas Wucher; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Charge exchange; Deep UV photons; Electron emission; Silicon; Sputtering; TOF-MEIS; Fysik; Physics;

    Sammanfattning : Interactions of energetic ions with matter govern processes as diverse as the influence of solar wind, hadron therapy for cancer treatment and plasma-wall interactions in fusion devices, and are used for controlled manipulation of materials properties as well as analytical methods. The scattering of ions from target nuclei and electrons does not only lead to energy deposition, but can induce the emission of different secondary particles including electrons, photons, sputtered target ions and neutrals as well as nuclear reaction products. LÄS MER