Search for dissertations about: "atomkraftsmikroskopi"

Showing result 1 - 5 of 14 swedish dissertations containing the word atomkraftsmikroskopi.

  1. 1. Interactions between non-polar surfaces in water: Fokus on talc, pitch and surface roughness effects

    Author : Viveca Wallqvist; Per Claesson; Janne Laine; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; Talc; surface forces; capillary attraction; hydrophobic interaction; pitch control; wetting agent; dispersing agent; adsorption; imbibition; absorption; permeation; atomic force microscopy; colloidal probe; Hamaker constant; surface roughness; nanostructure.; Talk; kapillärattraktion; ytkrafter; hydrofob växelverkan; hartskontroll; vätningsmedel; dispergeringsmedel; adsorption; uppsugning; absorption; permeabilitet; atomkraftsmikroskopi; kolloidal partikel; Hamakerkonstant; ytråhet; nanostrukturerad yta.; Surface and colloid chemistry; Yt- och kolloidkemi; Physical chemistry; Fysikalisk kemi; Chemistry; Kemi;

    Abstract : The aim of this thesis work was to gain understanding of the interactions between talc mineral and surfaces, liquids and chemicals relevant for industrial applications, such as pulp and paper. Talc is used in the pulp and paper industry as a filler pigment, in control of pitch (lipophilic extractives) deposits and as a coating pigment. READ MORE

  2. 2. Ionic liquids : The solid-liquid interface and surface forces

    Author : Nicklas Hjalmarsson; Mark W Rutland; Rob Atkin; Enrico Gnecco; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURVETENSKAP; NATURAL SCIENCES; Ionic liquids; solid-liquid interface; surface forces; nanotribology; atomic force microscopy; quartz crystal microbalance; Jonvätskor; gränsskiktet mellan fasta ytor och vätskor; ytkrafter; nanotribologi; atomkraftsmikroskopi; kvartskristallmikrovåg; Kemi; Chemistry;

    Abstract : Ionic liquids (ILs) present new approaches for controlling interactions at the solid-liquid interface. ILs are defined as liquids consisting of bulky and asymmetric ions, with a melting point below 373 K. Owing to their amphiphilic character they are powerful solvents but also possess other interesting properties. READ MORE

  3. 3. Semiconductor Nanowires: Characterization and surface modification

    Author : Sofie Yngman; NanoLund: Center for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; semiconducting nanowire; atomic force microscopy; Scanning tunneling microscopy; X-ray Photoelectron Spectroscopy; Scanning Probe Microscopy; Nanowires; Sveptunnelmikroskopi; Atomkraftsmikroskopi; XPS; Halvledarfysik; nanotrådar;

    Abstract : The topic of III-V nanowires is still, after more than two decades, a growing and lively research area. The areas of application are wide and contain such important topics as energy harvesting, cheap and efficient lighting, high efficiency detectors and new types of electronics. III-V materials offer properties superior to the widely used Si. READ MORE

  4. 4. Corrosion protection and nanomechanical properties of waterborne acrylate-based coating with and without nanocellulose on carbon steel

    Author : Yunjuan He; Per M. Claesson; Orlando Rojas; KTH; []
    Keywords : Hydroxyacrylate-melamine copolymer; cellulose nanocrystals CNC ; cellulose nanofibrils CNF ; Electrochemical impedance spectroscopy EIS ; atomic force microscopy AFM ; corrosion protection performance; water uptake; nanomechanical and nano-wear properties; coating; nanocomposite.; Hydroxyakrylat-melamin-sampolymer; cellulosananokristaller CNC ; cellulosananofibriller CNF ; Elektrokemisk impedansspektroskopi EIS ; atomkraftsmikroskopi AFM ; korrosionsskyddsprestanda; vattenupptag; nanomekaniska egenskaper och nano-slitage; coating; nanokomposit.; Kemi; Chemistry;

    Abstract : Corrosion protection is commonly achieved by applying a thin polymer coating on metal surfaces. In this doctoral thesis, a waterborne hydroxyacrylate-melamine copolymer coating was used for this purpose. The first step was to find the optimal curing conditions. READ MORE

  5. 5. MOVPE Growth and Characterization of Low-Dimensional III-V Semiconductor Structures

    Author : Niclas Carlsson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Semiconductory physics; low-dimensional structures; metalorganic vapour phase epitaxy; quantum wells; self-assembled dots; quantum dots; Fysicumarkivet A:1998:Carlsson; Halvledarfysik;

    Abstract : Metalorganic vapour phase epitaxy is used for growth of low-dimensional III-V semiconductor structures. The roughness of heterointerfaces in GaAs/GaInP quantum well structures is studied by photoluminescence emission from extremely narrow quantum wells. READ MORE