Sökning: "quartz crystal dissipation"

Visar resultat 1 - 5 av 82 avhandlingar innehållade orden quartz crystal dissipation.

  1. 1. Interfacial Properties of Biomacromolecular Model Systems: Surface Forces and Nanotribology

    Författare :Niklas Nordgren; Mark Rutland; Harry Brumer III; Robert Pelton; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; afm; surface force; friction; composite material; model surface; quartz crystal microbalance; dissipation; cellulose; xyloglucan; chitosan; colloidal probe; nanotribology; biomimetic; enzymatic; polysaccharide; graft; fiber; thiol; spring constant; calibration; lubrication; polyion; responsive.; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : The nanotribology, adhesion and related interfacial properties of biomacromolecular systems have been studied.  The aim was to elucidate the role of physisorbed and chemically grafted bio-polymers implicated as mediators for cellulose based processing and material design. LÄS MER

  3. 2. Development of Electroacoustic Sensors for Biomolecular Interaction Analysis

    Författare :Henrik Anderson; Ilia Katardjiev; Björn Ingemarsson; Inger Vikholm-Lundin; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; biosensor; protein interactions; kinetics; affinity; QCM; quartz crystal microbalance; piezoelectric resonators; dissipation; motional resistance; Bioanalytical engineering; Bioanalytisk teknik; Analytical chemistry; Analytisk kemi; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

    Sammanfattning : Biomolecular interaction analysis to determine the kinetics and affinity between interacting partners is important for the fundamental understanding of biology, as well as for the development of new pharmaceutical substances. A quartz crystal microbalance instrument suitable for kinetics and affinity analyses of interaction events was developed. LÄS MER

  4. 3. On the Frequency and Q Factor Response of the Quartz Crystal Microbalance to Liquid Overlayers

    Författare :Michael Rodahl; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; piezoelectric effect; solid-liquid interface; sensors; protein adsorption; QCM; tribology; quartz crystal microbalance;

    Sammanfattning : The quartz crystal microbalance (QCM) is an ultra-sensitive weighing device. It consists of a piezoelectric quartz crystal, often in the form of a disk, which is sandwiched between a pair of evaporated electrodes. LÄS MER

  5. 4. Characterization of Surfaces Designed for Biomedical Applications

    Författare :Emma Kristensen; Hans Siegbahn; Rolf Larsson; Sven Oscarsson; Uppsala universitet; []
    Nyckelord :Physics; heparin; photoelectron spectroscopy; phosphorylcholine; biomaterial; quartz crystal dissipation; Fysik; fysik; Physics;

    Sammanfattning : In order to develop blood biocompatible materials a heparin surface and a phosphorylcholine (PC) functionalized polymer surface were characterized using photoelectron spectroscopy (PES). The formation of the heparin surface was studied by quartz crystal microbalance with dissipation monitoring (QCM-D). LÄS MER

  7. 5. QCM-D with focus on variations in oscillation amplitude

    Författare :Malin Edvardsson; Chalmers tekniska högskola; []
    Nyckelord :shear oscillation; actuator; Quartz crystal microbalance; amplitude; streptavidin; lipid vesicles; biosensor; colloidal particles; size distribution; QCM-D; protein binding; DNA hybridization; dual harmonic; lipid bilayer formation;

    Sammanfattning : The QCM-D (quartz crystal microbalance with dissipation monitoring) technique is an increasingly popular tool in studies of molecular interactions at interfaces, e.g. binding/unbinding reactions at surfaces, studies of thin film properties, and conformational changes. LÄS MER