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Showing result 1 - 5 of 12 swedish dissertations matching the above criteria.

  1. 1. Metal Cluster Reactivity. Adsorption of small molecules in biomolecular collisions

    Author : Mats Andersson; Chalmers University of Technology; []
    Keywords : O2; CO; ionization potential; Con; Fen; NO; sticking probability; laser ionization; D2; Wn; Cun; Rhn; reaction probability; cluster; jellium model; Nbn; metal cluster reactivity; N2; time-of-flight mass spectrometry; Nin;

    Abstract : Metal clusters can be characterized as the tiniest possible metal particles, containing only an easily counted number of atoms. In this work, reactions between metal clusters and diatomic molecules have been investigated. We have constructed an experimental set-up to produce and detect clusters, and to investigate their chemical reactivity. READ MORE

  2. 2. Interatomic total-energy potentials for atomistic simulations of metallic systems

    Author : Jan Hartford; Chalmers University of Technology; []
    Keywords : materials science; atom-in-jellium; atomistic approaches; DFT; GGA-PW91; density functional; effective medium theory; EMT; inhomogeneous electron gas; model potential; generalized gradient approximation;

    Abstract : .... READ MORE

  3. 3. Nanomechanics – Quantum Size Effects, Contacts, and Triboelectricity

    Author : Martin Olsen; Jonas Örtegren; Håkan Olin; Per Gradin; Peter Glans; Rusen Yang; Mittuniversitetet; []
    Keywords : triboelectricity; adatom; ion; charge; mound; quantum size effect; triboelctric nanogenerator; TENG; wind driven; contact; nanomechanics; fri electron model; nanowire cantilever;

    Abstract : Nanomechanics is different from the mechanics that we experience in everyday life. At the nano-scale, typically defined as 1 to 100 nanometers, some phenomena are of crucial importance, while the same phenomena can be completely neglected on a larger scale. READ MORE

  4. 4. Total Energy Calculations for Predictive Modeling of Crystalline Materials Strength

    Author : Jan Hartford; Chalmers University of Technology; []
    Keywords : ;

    Abstract : Materials properties depend on phenomena in a hierarchical order from atomic to macroscopic scales. This thesis studies possibilities for electron-structure and total-energy calculations to provide results that are valuable for the modeling of crystalline materials strength. READ MORE

  5. 5. Models of Auger Neutralization and Tunneling at Metal Surfaces

    Author : Tony Fondén; Chalmers University of Technology; []
    Keywords : ;

    Abstract : This thesis consists of a theoretical study of electron transfer at metal surfaces. It considers two types of electron transfer (electron tunneling and Auger neutralization) that both can be used as a spectroscopy to investigate the surface electronic structure. READ MORE