Sökning: "non-equilibrium"

Visar resultat 16 - 20 av 30 uppsatser innehållade ordet non-equilibrium.

  1. 16. Preparation, characterization and testing of model catalysts for CO oxidation and CO2 hydrogenation

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

    Författare :Stefano Albertin; [2017]
    Nyckelord :Surface science; Rhodium; Nanoparticles; Catalysis; CO2; Physics and Astronomy;

    Sammanfattning : A joint research between Lund University and Chalmers Competence Centre for Catalysis have shown promising results for a Rh-based catalyst for CO2 hydrogenation catalytic applications. The original catalyst consisted of a dispersion of nanoparticles onto a porous 3D oxide network. LÄS MER

  3. 17. Electric Field Domains in Quantum Cascade Lasers

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Författare :Tim Almqvist; [2017]
    Nyckelord :quantum cascade laser; QCL; electric field domain; EFD; NDR; negative differential resistivity; simulations; Tim; Almqvist; kvantkaskadlaser; Physics and Astronomy;

    Sammanfattning : Quantum cascade lasers (QCLs) are periodic semiconductor heterostructures, capable of producing laser gain. They have become an important source of coherent radiation in the mid infrared, and THz frequency regions. QCLs are non-linear electric devices, and often have bias regions of negative differential resistivity (NDR). LÄS MER

  4. 18. Titanium vacancy diffusion in TiN via non-equilibrium ab initio molecular dynamics

    Master-uppsats, Linköpings universitet/Teoretisk Fysik

    Författare :Davide Gambino; [2016]
    Nyckelord :Titanium nitride; Ti monovacancy migration; Non-equilibrium ab initio molecular dynamics; Color diffusion algorithm; Statistics for stochastic events;

    Sammanfattning : Transition metal nitrides (TMNs) refractory ceramic materials are  widely employed as wear-resistant protective coatings in industrial machining as well as diffusion barriers inhibiting migration of metal impurities from the interconnects to the semiconducting region of electronic devices. TiN is the prototype of this class of materials and the most studied among TMNs. LÄS MER

  5. 19. Optical Tweezers and Maxwell's Demon

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Författare :Markus Aspegren; [2016]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Future nanoscale applications of Brownian motors will benefit from further development of stochastic thermodynamics, bridging the the properties of systems in non-equilibrium with those in equilibrium. This thesis presents the first step towards a device mimicking Maxwell's demon, which will be used for a study of systems out of equilibrium. LÄS MER

  7. 20. Multi-energy well kinetic modeling of novel PAH formation pathways in flames

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Nicola Giramondi; [2016]
    Nyckelord :Polycyclic Aromatic Hydrocarbons; soot; laminar flame; flame calculation; quantum chemical calculation; non-equilibrium kinetic modeling.;

    Sammanfattning : Polycyclic Aromatic Hydrocarbons (PAHs) are harmful by-products formed during combustion of hydrocarbons under locally fuel-rich conditions followed by incomplete combustion. PAHs act as precursors during the formation of soot. PAHs and soot are harmful for human health and legislation limits the emission of unburned hydrocarbons and soot. LÄS MER