Sökning: "Langmuir-Blodgett films"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Langmuir-Blodgett films.

  1. 1. Phospholipid membranes in biosensor applications : Stability, activity and kinetics of reconstituted proteins and glycolipids in supported membranes

    Författare :Inga Gustafson; Gertrud Puu; Sven Lindskog; Peter Konradsson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; Phospholipid films; Liposomes; Membrane proteins; Glycolipids; Ellipsometry; Langmuir Blodgett LB ; Surface plasmon resonance SPR ; Resonant mirror RM ; Atomic force microscopy AFM ; Biosensors; Biokemi; Biochemistry; Biokemi; Biochemistry; biokemi;

    Sammanfattning : In this study the formation of supported membranes onto planar solid supports has been investigated. The stability and activity of reconstituted membrane receptors has been studied. The potential use of such preparations in biosensor applications is discussed.The lipid films were made by the Langmuir Blodgett and by the liposome fusion techniques. LÄS MER

  3. 2. On the interactions in cellulose systems : surface forces and adsorption

    Författare :Monika Österberg; KTH; []
    Nyckelord :cellulose; hemicellulose; xylan; lignin; surface forces; adsorption; polyelectrolyte; SFA; AFM; ESCA; Langmuir-Blodgett films; chitosan; steric forces; bridging; adhesion;

    Sammanfattning : In this thesis the interactions in cellulose systems havebeen studied with emphasis on surface forces and adsorptionphenomenon. The study was limited to surfaces and polymers ofinterest for papermaking. LÄS MER

  4. 3. Lipid bilayers versus monolayers- Sponge phases and skin lipid domains

    Författare :Katarina Ekelund; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatty acids; Langmuir-Blodgett films; AFM; domains; stratum corneum; bilayer curvature; lipids; glycerol monooleate; phase behaviour; sponge phase; L3 phase; Livsmedelsteknik; cholesterol; Food and drink technology;

    Sammanfattning : The L3, or sponge, phase is a thermodynamically stable isotropic liquid consisting of a surfactant membrane in aqueous solution. A solvent induced L3 phase is shown in systems of solvent, monoolein and water. LÄS MER

  5. 4. Nanoscale studies of the atmospheric corrosion of copper protected by ultrathin organic films

    Författare :Weijie Zhao; C. Magnus Johnson; Christopher Leygraf; Guido Grundmeier; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Atmospheric corrosion; copper; corrosion inhibition; Langmuir-Blodgett LB deposition; self-assembly deposition; nano-FTIR; octadecylphosphonic acid ODPA .; Kemi; Chemistry;

    Sammanfattning : Copper (Cu) has been utilised by humans for millenniums and has become an indispensable metal in modern industry and in our infrastructure. However, corrosion, as a natural process for metallic materials, takes place on copper surfaces in most environments. LÄS MER

  7. 5. POLYPEPTIDES - STRUCTURES AND INTERACTIONS IN MONOLAYERS AND AQUEOUS SOLUTIONS

    Författare :Helen Sjögren; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Fysikalisk kemi; tyrosine ; co-poly-L lysine; phenylalanine ; co-poly-L- lysine; poly-L-glutamate; poly-L-lysine; poly-L-valine; poly-L-isoleucine; poly-gamma-methyl-L-glutamate; poly-L-leucine; monolayer; Langmuir-Blodgett film; CD spectroscopy; random coil; alpha-helix; surfactant stabilisation; polypeptide; polyamino acid;

    Sammanfattning : The aim of this thesis work is to understand and be able to control polypeptide conformation and interactions at interfaces and in solution by changing the solution conditions. For this purpose simple model polypeptides, so-called polyamino acids, have been investigated at the air-liquid interface, as well as in aqueous solutions. LÄS MER