Sökning: "tunability"

Visar resultat 1 - 5 av 13 uppsatser innehållade ordet tunability.

  1. 1. Multi-Scale Topology Optimization of Lattice Structures Using Machine Learning

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

    Författare :Julia Ibstedt; [2023]
    Nyckelord :Topology optimization; Multi-scale topology optimization; Machine learning; Gaussian process; Homogenization; Inverse homogenization; Anisotropic materials; Symmetry groups; Material property space; Topologioptimering; Flerskalig topologioptimering; Maskininlärning; Gaussian process; Homogenisering; Anisotropa material; Symmetrigrupper; Materialegenskapsrymd;

    Sammanfattning : This thesis explores using multi-scale topology optimization (TO) by utilizing inverse homogenization to automate the adjustment of each unit-cell's geometry and placement in a lattice structure within a pressure vessel (the design domain) to achieve desired structural properties. The aim is to find the optimal material distribution within the design domain as well as desired material properties at each discretized element and use machine learning (ML) to map microstructures with corresponding prescribed effective properties. LÄS MER

  3. 2. Fabry Pérot Nanocavity Produced via Solution Methods

    Master-uppsats, Uppsala universitet/Materialfysik; Uppsala universitet/Fysikalisk kemi

    Författare :Stylianos Kioumourtzoglou; [2023]
    Nyckelord :Plasmonics; Photocatalyis; Fabry Pérot nanocavity;

    Sammanfattning : Plasmonics have attracted significant attention from the scientific community for photoelectrode technologies since they offer tunability, large light absorption cross-sections, transparency and potential scalability. On the downside, plasmonics exhibit large absorption cross sections in a narrow window compared to the total electromagnetic spectrum, leading to relatively small efficiencies. LÄS MER

  4. 3. Towards a tunable, wide-band acoustic transducer operating in the quantum regime.

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Abel Hugot; [2022]
    Nyckelord :Hybrid quantum systems; Acoustics; Impedance matching; SQUIDs; Hybrida kvantsystem; Akustik; Impedansanpassning; SQUIDs.;

    Sammanfattning : In the past decade we have seen fast development of new quantum technologies that promise to revolutionise communications and computing. Many different routes are explored to physically implement such quantum technologies. Among others, we can mention superconducting circuits, spin-based devices and photonic devices. LÄS MER

  5. 4. Design and Construction of a Multi-Port Beamsplitter Based on Few-Mode-Fibers

    Master-uppsats, Linköpings universitet/Informationskodning

    Författare :Daniel Spegel-Lexne; [2022]
    Nyckelord :beamsplitter; spatial modes; Space division multiplexing; superpositions; LP-modes; few-mode fibers; multi-mode interference; self-imaging; heterogeneous fiber structures; quantum communication; quantum optics;

    Sammanfattning : A MBS (Multi-port beamsplitter) for higher dimensional quantum communication has been designed and constructed and the theory and method for this is presented in this thesis. It uses optical fibers in a heterogeneous structure with a single-mode fiber spliced to a multi-mode fiber and then spliced to a few-mode fiber. LÄS MER

  7. 5. Influence of mass transport on glycerol electrooxidation on palladium in alkaline media

    Master-uppsats, KTH/Tillämpad elektrokemi

    Författare :Elvira Lind; [2022]
    Nyckelord :Glycerol electrooxidation; Palladium; Mass transport; Comsol Multiphysics; Rotating disk electrode; Electrooxidation av glycerol; Palladium; Masstransport; Comsol Multiphysics; Roterande diskelektrod;

    Sammanfattning : Vid produktion av biodiesel produceras även råglycerol (10 vikt%) som biprodukt och utbudet av råglycerol har ökat över de senaste åren till följd av att biodieselproduktionen ökat. Marknadsvärdet för råglycerol är lågt, men det är en utmärkt föregångare till att producera mervärdesprodukter för exempelvis läkemedelsindustrin, kemikalieindustrin eller kosmetika. LÄS MER