Search for dissertations about: "liquid order"

Showing result 1 - 5 of 518 swedish dissertations containing the words liquid order.

  1. 1. X-Ray Investigations of the Liquid-Liquid Critical Point Hypothesis in Supercooled Water

    University dissertation from Stockholm : Department of Physics, Stockholm University

    Author : Alexander Späh; Anders Nilsson; Martin Meedom Nielsen; [2020]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; water; supercooled water; x-ray scattering; free electron x-ray laser; liquid-liquid phase transition; liquid-liquid critical point; x-ray speckle visibility spectroscopy; kemisk fysik; Chemical Physics;

    Abstract : This thesis presents experimental x-ray scattering studies on supercooled liquid water. A liquid-liquid transition between two structurally distinct configurations has been found in deeply supercooled water, indicating the existence of a liquid- liquid critical point. READ MORE

  2. 2. Computer Simulations of Simple Liquids with Tetrahedral Local Order the Supercooled Liquid, Solids and Phase Transitions

    University dissertation from Stockholm : Numerical Analysis and Computer Science (NADA) (together with KTH), Stockholm University

    Author : Måns Elenius; Mikhail Dzugutov; Jonathan Doye; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Simple liquids; glasses; liquid-glass transition; supercooled liquids; tetrahedral liquids; phase transitions; quasicrystals; molecular dynamics; NATURAL SCIENCES Physics Condensed matter physics; NATURVETENSKAP Fysik Kondenserade materiens fysik; NATURAL SCIENCES Physics Condensed matter physics Liquid physics; NATURVETENSKAP Fysik Kondenserade materiens fysik Vätskefysik; Numerical Analysis; numerisk analys;

    Abstract : The understanding of complex condensed matter systems is an area of intense study. In this thesis, some properties of simple liquids with strong preference for tetrahedral local ordering are explored. These liquids are amenable to supercooling, and give complex crystalline structures on eventual crystallisation. READ MORE

  3. 3. Liquid Crystals in Guided Wave Optics

    University dissertation from Stockholm : Numerical Analysis and Computer Science (NADA) (together with KTH), Stockholm University

    Author : Giusy Scalia; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; antiferroelectric liquid crystals; fully-leaky guided mode; ortho-conics; waveguide; liquid crystals; anisotropy;

    Abstract : Liquid crystals are unique optical materials due to their large effective electrooptic and opto-optic coefficients. Currently, liquid crystals are primarily used in flat-panel dis-plays, but there is also an increasing number of nondisplay applications requiring new types of devices employing materials with unique optical properties. READ MORE

  4. 4. Fluid Dynamics in Stirred Vessels - Experiments and simulations of single-phase and liquid-liquid systems

    University dissertation from Stockholm : Numerical Analysis and Computer Science (NADA) (together with KTH), Stockholm University

    Author : Fredrik Svensson; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Particle Image Velocimetry PIV ; single-phase; Laser Doppler Anemometry LDA ; mixing; liquid-Liquid; immiscible; stirred tank; Rushton turbine; Computational Fluid Dynamics CFD ; macro-instability; frequency analysis; refraction index matched;

    Abstract : This thesis applies experimental measurement techniques and computational fluid dynamics to evaluate turbulent mixing of liquid-liquid systems in stirred vessels. Also studies of macro-instabilities in a single-phase system and how they affect flow and thus mixing are conducted. READ MORE

  5. 5. Structures and Properties of the Chiral Smectic C Liquid Crystal Phases Ferro- and Antiferroelectricity in Soft Matter

    University dissertation from Stockholm : Numerical Analysis and Computer Science (NADA) (together with KTH), Stockholm University

    Author : Jan Lagerwall; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ferroelectric liquid crystals; orientational order; smectic layer shrinkage; antiferroelectric liquid crystals; subphase suppression; confinement;

    Abstract : Liquid crystals constitute a form of soft matter possessing lower symmetry than isotropic liquids but higher symmetry than solid crystals. In smectic A and C liquid crystals, the rodlike molecules are arranged in layers and the medium has crystal order in one dimension and liquid order in the other two. READ MORE