Search for dissertations about: "van der Waals interaction"

Showing result 1 - 5 of 39 swedish dissertations containing the words van der Waals interaction.

  1. 1. van der Waals Density Functionals

    Author : Ylva Andersson; [1996]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; van der Waals molecules; physisorption; van der Waals interactions; density-functional theory; exchange-correlation energy; scanning-force microscopy; adhesion;

    Abstract : Methods using local or semi local approximations (LDA, GGA etc.) for the exchange-correlation energy in the density-functional theory (DFT) do not include van der Waals interactions. READ MORE

  2. 2. Van der Waals Interactions in Density Functional Theory

    Author : Erika Hult; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; van der Waals interaction; exchange-correlation energy; adhesion; intermolecular forces; physisorption; density functional theory;

    Abstract : Density functional theory is a very important method for calculating ground-state properties for atoms, molecules and solids. Albeit exact in principle, its implementation requires an approximation for the so-called exchange-correlation energy. READ MORE

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

    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

  4. 4. A study of finite-size and non-perturbative effects on the van der Waals and the Casimir-Polder forces

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Thiyam Priyadarshini; Clas Persson; Mathias Boström; Thomas Ederth; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; finite-size effects; non-perturbative theory; van der Waals and Casimir Polder forces; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : This licentiate thesis addresses two important aspects of the van der Waals and the Casimir-Polder ground-state and excited-state (resonance) interactions between two atoms or molecules. The first is the finite-size effect and the second is the non-perturbative effect. READ MORE

  5. 5. Bound by long-range interactions: Molecular crystals and benzene on Cu(111)

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Kristian Berland; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; DFT; diffusion barriers; sparse matter; platonic hydrocarbons; molecular crystals; van der Waals density functional vdW-DF ; van der Waals forces; London-dispersion forces; self-assembly; hexamine; molecular overlayers; electronic structure; Friedel oscillations; soft matter; surface-mediated interactions; physiosorption;

    Abstract : This thesis investigates molecular systems bound by long-range interactions. Westudy molecular crystals held together by van der Waals forces and the physisorption of benzene (Bz) on Cu(111). READ MORE