Search for dissertations about: "nanoribbons"
Showing result 1 - 5 of 16 swedish dissertations containing the word nanoribbons.
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1. Quantum Transport Theory in Graphene
Abstract : 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. READ MORE
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2. Materials for Hydrogen storage and synthesis of new materials by hydrogenation
Abstract : The search for new materials for hydrogen storage is important for the development of future hydrogen energy applications. In this Thesis, it is shown that new materials with interesting properties can be synthesized by the reaction of hydrogen with various nanocarbon precursors. The thesis consists of two parts. READ MORE
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3. First Principles Studies of Functional Materials Based on Graphene and Organometallics
Abstract : Graphene is foreseen to be the basis of future electronics owing to its ultra thin structure, extremely high charge carrier mobility, high thermal conductivity etc., which are expected to overcome the size limitation and heat dissipation problem in silicon based transistors. READ MORE
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4. Charge-Spin Conversion and Electronic Transport in Two-Dimensional Materials and van der Waals Heterostructures
Abstract : Applications related to artificial intelligence (AI), 5G communication, cloud computing, Internet of Things (IoT) will necessitate wide range of data collection, communication and processing. Current charge-based technology using conventional materials suffers adverse effects with down-scaling the device size and has limited efficiency in meeting the future demands for computation and data storage. READ MORE
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5. Effect of Substrate on Bottom-Up Fabrication and Electronic Properties of Graphene Nanoribbons
Abstract : Taking into account the technological demand for the controlled preparation of atomically precise graphene nanoribbons (GNRs) with well-defined properties, the present thesis is focused on the investigation of the role of the underlying metal substrate in the process of building GNRs using bottom-up strategy and on the changes in the electronic structure of GNRs induced by the GNR-metal interaction. The combination of surface sensitive synchrotron-radiation-based spectroscopic techniques and scanning tunneling microscopy with in situ sample preparation allowed to trace evolution of the structural and electronic properties of the investigated systems. READ MORE