Sökning: "crystal alignment"

Visar resultat 6 - 10 av 10 uppsatser innehållade orden crystal alignment.

  1. 6. Towards a Cooper pair splitter in InAs nanowires with crystal-phase defined quantum dots

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Lunds Tekniska Högskola

    Författare :Louise Olausson; [2022]
    Nyckelord :Cooper pair splitter; quantum dot; nanowire; superconductivity; InAs; crystal-phase; Physics and Astronomy;

    Sammanfattning : Cooper pair splitting (CPS) is a process in which the two spin-entangled electrons of a Cooper pair in a superconductor are split into two spatially separated electrons. If the separated electrons are still entangled, CPS can be studied to increase the knowledge of non-locality in quantum systems. LÄS MER

  3. 7. Designing an Experiment to Investigate Slow Light Effects in Whispering Gallery Mode Resonators

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

    Författare :Karolina Dorozynska; [2015]
    Nyckelord :Slow light; Whispering Gallery Mode Resonator; WGMR; Atomic physics; Physics and Astronomy;

    Sammanfattning : Slow light and Whispering Gallery Mode Resonators are two interesting and useful fields with applications in optical sensing and laser stabilisation among others. Slow light can lead to long interaction times which are useful in light-matter interactions such as sensitive non-linear optics. LÄS MER

  4. 8. Setup for Micro Photo- and Electro-Luminescence of Optoelectronic Device Structures

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Yuxuan Sun; [2015]
    Nyckelord :Photoluminescence; Photoluminescence setup; Electroluminescence; Optoelectronic device;

    Sammanfattning : Photoluminescence (PL) is an optical emission induced by photon absorption in a material where electrons are excited from the ground state to excited states, then relax to the lowest excited states and recombine radiatively. The PL emission provides vital information on bandgap energy, material purity and crystal quality. LÄS MER

  5. 9. Channeling of MeV ion beams : Improving sample alignment at the tandem accelerator, Ångström laboratory

    Kandidat-uppsats, Uppsala universitet/Tillämpad kärnfysik

    Författare :Ludvig Svensson Sjöbom; [2014]
    Nyckelord :rutherford backscattering; RBS; channelling; tandem; accelerator; thin film;

    Sammanfattning : At the Tandem accelerator in the Ångström laboratory, Uppsala, Rutherford backscattering spectrometry (RBS) is one of the methods used for thin film analysis, providing information on thickness and composition. The films are commonly grown on silicon substrates, whose crystal structure gives rise to channelling effects (a strong angular dependence in the intensity of the signal), which can cause faulty results. LÄS MER

  7. 10. Simulation of cubic GaN growth in SA MOVPE

    Master-uppsats, Institutionen för fysik, kemi och biologi

    Författare :Daniel Nilsson; [2009]
    Nyckelord :simulation; gallium nitride; SAG MOVPE; anisotropic;

    Sammanfattning : In this work growth of cubic GaN in the selective area (SA) MOVPE process is simulated. The simulations are restricted to small pattern SA MOVPE growth. In this case the traditional MOVPE growth and the enhanced growth caused by surface diffusion are important growth factors. LÄS MER