Search for dissertations about: "Erik Lewin"

Showing result 1 - 5 of 12 swedish dissertations containing the words Erik Lewin.

  2. 1. Growth and thermoelectric properties of CaMnO3-based thin films

    Author : Erik Ekström; Per Eklund; Fredrik Eriksson; Biplab Paul; Erik Lewin; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The field of them1oelectrics started in early 19th century. Since the discovery of the Seebeck effect and the Peltier effect, thermoelectric modules have found their way into, mostly, niche applications such as radioisotope thermoelectric generators on space missions. READ MORE

  4. 2. Design of carbide-based nanocomposite coatings

    Author : Erik Lewin; Ulf Jansson; Jörg Patscheider; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; chemistry; thin film; dc magnetron sputtering; carbide; nanocomposite; PVD; solid solution; Chemistry; Kemi; Inorganic chemistry; Oorganisk kemi; Inorganic Chemistry; Oorganisk kemi;

    Abstract : In this thesis research on synthesis, microstructure and properties of carbide-based coatings is reported. These coatings are electrically conducting, and can be tailored for high hardness, low friction and wear, along with load-adaptive behaviour. Tailoring these properties is achieved by controlling the relative phase content of the material. READ MORE

  5. 3. Synthesis and Characterization of Amorphous Carbide-based Thin Films

    Author : Matilda Folkenant; Ulf Jansson; Erik Lewin; Paul Mayrhofer; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Amorphous; coating; thin film; nanocomposite; sputter deposition; PVD; XPS; SEM; TEM; electrical properties; mechanical properties;

    Abstract : In this thesis, research on synthesis, structure and characterization of amorphous carbide-based thin films is presented. Crystalline and nanocomposite carbide films can exhibit properties such as high electrical conductivity, high hardness and low friction and wear. READ MORE

  6. 4. Microstructure and Mechanical Properties of Magnetron Sputtered Refractory Metal Thin Films

    Author : Stefan Fritze; Ulf Jansson; Erik Lewin; Petr Vasina; Uppsala universitet; []
    Keywords : thin films magnetron sputtering; refractory metals; high entropy alloys; mechanical properties; transition metal carbides; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Abstract : The design and development of new multifunctional materials that exhibit a combination of high hardness and ductility, as well as a high corrosion resistance and thermal stability, is one of the key challenges in the field of material science. The focus of this thesis is on the development of novel multifunctional magnetron sputtered CrNbTaTiW–C based thin films. READ MORE

  7. 5. Advancements in Lithium-Based Batteries : Unraveling and Mitigating Performance-Limiting Phenomena in Negative Electrodes

    Author : Yu-Kai Huang; Leif Nyholm; William Brant; Erik Lewin; Gunther Brunklaus; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lithium-based batteries; negative electrodes; negative electrode materials; lithium diffusion; lithium trapping; lithium electrodeposition; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Abstract : The development of lithium-based batteries, especially lithium-ion batteries, has changed our daily lives significantly. The technologies first enabled by lithium-based batteries are now in turn creating a demand for better lithium-based batteries with higher energy densities and longer cycling lifetimes. READ MORE