Search for dissertations about: "dispersive interactions"

Showing result 1 - 5 of 26 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. Modeling colloidal nanoparticles: From growth to deposition

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Joakim Löfgren; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; density functional theory; thermodynamics; nanorods; colloidal nanoparticles; van der Waals; anisotropic; deposition; dispersive interactions; modeling; gold; DLVO;

    Abstract : In recent decades metal nanoparticles (NPs) have been the subject of intense research. The interest stems from the NPs physicochemical properties that can be conveniently tuned through, e.g., their size, shape or composition. READ MORE

  4. 4. Quantum Kinetic Theory for Plasmas spin, exchange, and particle dispersive effects

    University dissertation from Umeå : Umeå universitet

    Author : Robin Ekman; Umeå universitet.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; teoretisk fysik; Theoretical Physics;

    Abstract : This thesis is about developing and studying quantum mechanical models of plasmas. Quantum effects can be important at high densities, at low temperatures, and in strong electromagnetic fields, in various laboratory and astrophysical systems. READ MORE

  5. 5. 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