Sökning: "surface group density"

Visar resultat 1 - 5 av 90 avhandlingar innehållade orden surface group density.

  1. 1. Nanocellulose for Biomedical Applications : Modification, Characterisation and Biocompatibility Studies

    Författare :Kai Hua; Natalia Ferraz; Maria Strømme; Albert Mihranyan; Pedro Granja; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocellulose; nanofibrillated cellulose; Cladophora cellulose; biocompatibility; inflammation; surface modification; surface group density; surface topography; Engineering Science with specialization in Nanotechnology and Functional Materials; Teknisk fysik med inriktning mot nanoteknologi och funktionella material;

    Sammanfattning : In the past decade there has been increasing interest in exploring the use of nanocellulose in medicine. However, the influence of the physicochemical properties of nanocellulose on the material´s biocompatibility has not been fully investigated. LÄS MER

  3. 2. Non-contact surface wave measurements on pavements

    Författare :Henrik Bjurström; Nils Rydén; Björn Birgisson; Jinying Zhu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; seismic testing; asphalt concrete; dynamic modulus; non-contact measurements; rolling measurements; surface waves; Lamb waves; MEMS microphones; Byggvetenskap; Civil and Architectural Engineering;

    Sammanfattning : In this thesis, nondestructive surface wave measurements are presented for characterization of dynamic modulus and layer thickness on different pavements and cement concrete slabs. Air-coupled microphones enable rapid data acquisition without physical contact with the pavement surface. LÄS MER

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

    Författare :Joakim Löfgren; Chalmers tekniska högskola; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  5. 4. Interaction of some molecules with complex surfaces

    Författare :Andrea Resta; Synkrotronljusfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Catalysis; Ethylene; CO.; Surface Science; Vicinal surface; Ethanol; Rh;

    Sammanfattning : This thesis investigates the adsorption, decomposition and reactions of small molecules on flat, oxidised and vicinal surfaces of late transition metals. The main technique for these studies is high resolution core level spectroscopy (HRCLS). All the studies presented in the thesis are performed in Ultra High Vacuum (UHV). LÄS MER

  7. 5. Structure and Electronic Properties of Phthalocyanine Films on Metal and Semiconductor Substrates

    Författare :Ieva Bidermane; Carla Puglia; Nadine Witkowski; Nils Mårtensson; Luca Giovanelli; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Phthalocyanines; silicon 100 ; Au 111 ; photoelectron spectroscopy; scanning tunneling microscopy; surface science; organic molecules on surface;

    Sammanfattning : The current thesis presents fundamental studies of phthalocyanines (Pcs), a group of organic macro-cycle molecules. The use of phthalocyanine molecular films in devices with a variety of possible technological applications has been the reason of the many studies dedicated to such molecules during the last decades. LÄS MER