Sökning: "transport measurements"

Visar resultat 31 - 35 av 671 avhandlingar innehållade orden transport measurements.

  1. 31. Quantum Transport Theory in Graphene

    Författare :Anders Bergvall; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; quantum coherent electron transport; nanoribbons; FT-LDOS; grain boundaries; tight-binding; graphene;

    Sammanfattning : In this thesis, we focus on different aspects of electron transport in nanostructured graphene (such as graphene nanoribbons). Wedevelop and implement numerical methods to study quantum coherent electron transport on an atomistic level, complemented by analytical calculations based on the Dirac approximation valid close to the points $\vec{K}$ and $\vec{K}^\prime$ in the graphene Brillouin zone. LÄS MER

  3. 32. Local Structure and Dynamics of Next Generation Electrolytes - linking microscopic and macroscopic properties

    Författare :Filippa Lundin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; QENS; Ionic Liquids; Highly concentrated electrolytes; Dynamics; SAXS; Ion Transport; Electrolytes; Structure;

    Sammanfattning : The electrolyte is a crucial part of a battery in terms of performance, longevity and safety. However, the state-of-the-art electrolytes for lithium-ion batteries are based on organic solvents and Li-salts (typically at 1M concentration) which are volatile and degrade at higher temperatures. LÄS MER

  4. 33. Molecular Arrangement, Electronic Structure and Transport Properties in Surfactant Gel- and Related Systems Studied by Soft X-ray and Dielectric Spectroscopy

    Författare :Johan Gråsjö; Maria Strömme; Jan Swenson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surfactants; surfactant poly-ion gel; water; confined water; XAS; RIXS; dielectric spectroscopy; SAXS; pKa; transport; Fick’s law; Engineering Science with specialization in Nanotechnology and Functional Materials; Teknisk fysik med inriktning mot nanoteknologi och funktionella material;

    Sammanfattning : This thesis concerns studies of aqueous soft matter systems, especially surfactant micelle systems.The aim has been to study the molecular arrangement and electronic structure of the constituents of, as well as transport properties in such a system. LÄS MER

  5. 34. Understanding Changes in Decision-making Processes to Adopt First-/Last-Mile Automated Bus Service

    Författare :Pei Nen Esther Chee; Yusak Octavius Susilo; Wong Yiik Diew; Kay Axhausen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Behaviour Analysis; Decision-making Process; User Experience; Adopt New Technology; Automated Self-driving Bus; First Mile; Last Mile; beteendeanalys; beslutsprocess; användarupplevelse; anta ny teknik; självkörande buss; första mil; sista mil; Transportsystem; Transport Systems;

    Sammanfattning : This research investigates the changes in the interactions of objective factors (factors which are independent of perception e.g. LÄS MER

  7. 35. Charge Transport Processes in Mesoporous Photoelectrochemical Systems

    Författare :Jarl Nissfolk; Anders Hagfeldt; Gerald J. Meyer; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; solar cell; dye-sensitized; impedance; electron transport; mesoporous; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : During the last decade, the dye sensitised solar cell (DSC) has attracted much attention. The technology has a potential to act as a new generation of photovoltaic device, it has also increased our knowledge within the field of photoelectrochemistry. LÄS MER