Search for dissertations about: "dispersive interactions"

Showing result 1 - 5 of 24 swedish dissertations containing the words dispersive interactions.

  1. 1. Elements of modeling nanoparticle growth: Surface thermodynamics and dispersive interactions

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Joakim Löfgren; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; density functional theory; growth mechanism; gold nanorods; dispersive interactions; molecular dynamics; van der Waals forces; thermodynamics; CTAB; anisotropic nanoparticles; modeling; surface phase diagram;

    Abstract : Metal nanoparticles have in recent decades been the subject of intense research owing to their wide range of size and shape-dependent properties, which makes them interesting candidates for a variety of applications. Gold nanorods represent a particularly intriguing type of particle due to their tunable plasmonic properties. READ MORE

  2. 2. First-principles calculations of polymer interactions

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Jesper Kleis; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; polymer structure; polyvinylchloride.; polypropylene; polyethylene; sparse material systems; Density functional theory; polymer interactions; van der Waals interaction; polymer crystal; soft matter; DFT;

    Abstract : This thesis reports on studies of interactions in sparse matter by first-principles calculations, in particular polymeric systems. The focus is on the three unbranched simple polymers: polyethylene (PE), isotactic polypropylene (PP) and isotactic polyvinylchloride (PVC), which together represent an important class of materials that form complexes stabilized by weak but long-range dispersive interactions. READ MORE

  3. 3. An Experimental Study on Melt Fragmentation, Oxidation and Steam Explosion during Fuel Coolant Interactions

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Louis Manickam; KTH.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; severe accident; fuel coolant interactions; melt jet breakup; debris properties; steam explosion; oxidation; high-speed visualization; Physics; Fysik;

    Abstract : Nordic type boiling water reactors (BWRs) adopt reactor cavity flooding as a severe accident mitigation strategy (SAMS) to achieve core melt fragmentation and long-term cooling of decay heat generating core debris. The qualification of this SAMS needs to address two main severe accident issues: debris bed coolability and steam explosion. READ MORE

  4. 4. Van der Waals density-functional description of polymers and other sparse materials

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Jesper Kleis; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; softmatter; Density functional theory; polyethylene; van der Waals interaction; polymer crystal; nanotubes; DFT; sparse material systems; polymer interactions; polymer structure;

    Abstract : Polymers are abundant in nature --- rubber, tar and latex have been known to mankind for thousands of years. Early in the 20th century, a systematic synthesis of polymers was developed, but the great potential of synthesized polymers was recognized first during World War II. READ MORE

  5. 5. Mobility and emigration in butterflies

    University dissertation from Stockholm : Zoologiska institutionen

    Author : Karin Enfjäll; Stockholms universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Keywords: conspecific density; dispersal; evolution; flight-behaviour; information; sexual conflict; social interactions; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Ethology and behavioural ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi Etologi och beteendeekologi; etologi; Ethology;

    Abstract : Because of its implications for the survival of many species, dispersal plays a key role in conservation biology. A good knowledge about the different factors that influence dispersal decisions is crucial for the understanding of inter-population movements. READ MORE