Search for dissertations about: "glass transition"

Showing result 16 - 20 of 154 swedish dissertations containing the words glass transition.

  2. 16. Structural Dynamics of Glass-Forming Liquids

    Author : Dennis Engberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Neutron and light scattering experiments on glass-forming liquids, an oxide network, a polymeric system and a polymeric electrolyte, were performed. The network glass-former B2O3 was investigated from 60 - 1300 K. The experimental results were interpreted using mode coupling theory and the soft potential model. READ MORE

  4. 17. Structure and Dynamics of Silica Dispersions and Gels

    Author : Jonas Nordström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aging; Photon correlation spectroscopy; sodium silicate; lithium electrolytes; water glass; fumed silica; sol-gel transition;

    Abstract : This thesis deal with the sol-gel transition of two quite different systems, both based on silica. The overall aim is to understand what interactions lead to this sol-gel transition and how the structure and dynamics change as a result of this.The first project concern the gelation of water glass, also known as alkaline sodium silicate solutions. READ MORE

  5. 18. Time dependent material properties of shotcrete for hard rock tunnelling

    Author : Lars Elof Bryne; Anders Ansell; Wolfgang Kusterle; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Shotcrete; rock; granite; bond strength; compressive strength; pullout testing; failure modes; interfacial transition zone; micro structure; ettringite; set accelerator; shrinkage; drains; glass fibres; laboratory testing; tunnels tunnelling;

    Abstract : In this thesis different mechanical properties for shotcrete (sprayed concrete) such as compression strength, bond strength, bending tensile strength, elastic modulus, free and restrained shrinkage as a function of its age was investigated. One of the main issues was to investigate the difference between ordinary cast concrete and shotcrete. READ MORE

  6. 19. Relaxation and nanomechanical studies of the vickers residual stress field in glass

    Author : Kwadwo O. Kese; Bill Bergman; Sture Hogmak; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; soda-lime glass; vickers residual stress field; nanoindentation; stress rekaxatuib; cube corner indenter; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Abstract : The Vickers residual stress field (VRSF) in soda-lime glass results from the elastic-plastic contact event that takes place when a Vickers diamond pyramid is loaded onto the surface of the material in an indentation cycle. The importance of elastic-plastic indentation lies in the contact damage that it gives rise to in the surface of the glass. READ MORE

  7. 20. Disordered matter: From Ionic Glasses to Proteins

    Author : Charbel Tengroth; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; liquid-glass transition; PPG; disorder; B2O3; neutron scattering; hemoglobin; time-resolved resonance Raman scattering; CKN;

    Abstract : Understanding the glassy state is regarded as one of the ten most important questions in physics in the 21st century [1]. This thesis deals with structure and dynamics of a few model disordered systems ranging from an ionic glass to proteins. The structure of an ionic liquid, Ca0.4K0. READ MORE