Blar i Fakultet for naturvitenskap (NV) på emneord "Nanoteknologi, Nanoteknologi for materialer, energi og miljø"
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3D TEM characterization of silver implanted silicon for intermediate band solar cells
(Master thesis, 2017)As the need for renewable and sustainable energy sources are growing solar cells are turning into one of the most affordable and widely adopted solutions for renewable electricity production. This is driven by a steady ... -
A Method for Controlled Oxide and Carbon Coating of Silicon Nanoparticles as Anode in Lithium-Ion Batteries
(Master thesis, 2017)Silicon has emerged as a promising alternative to graphite in lithium-ion batteries. Silicon can, theoretically, provide up to ten times higher capacity due to its high alloying capabilities with lithium. This improvement ... -
Construction of Nanocellulose Microcapsules for Research and Sensor Applications
(Master thesis, 2018)Nanocellulose microcapsules with internal hollows have previously been found to form when cellulose nanofibrils (CNF) are added to paper pulp before drying. In an effort to study such capsules removed from the paper matrix, ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
(Master thesis, 2015)Prevention of ice formation is an important yet dicult task for many industries operating under freezing conditions, such as aeronautics and the oil industry. Ice accumulation can severely limit the operational eciency, ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
(Master thesis, 2016)Icing is a problem for several industries, and current methods for removal of ice have several difficulties as they are time consuming, energy intensive and may be environmentally harmful. A better solution to the icing ... -
Development of Hydrophobic Surfaces for Anti-Icing Applications
(Master thesis, 2017)Ice accumulation on outdoor infrastructure is a major problem for many industries. Several strategies are commonly employed to remove ice, but they are often expensive or have negative environmental consequences. An ... -
Development of Structural Characterization Methods for Polyvinyl Alcohol (PVA)/Nanocellulose Composite Membranes
(Master thesis, 2016)Structural characterization of polyvinyl alcohol (PVA)/nanocellulose films by scanning electron microscopy (SEM) generally only provides an qualitative estimate of how well the nanocellulose is distributed, and is not ... -
The Effect of Thermal History on the Structural and Dielectric Properties of Tetragonal Tungsten Bronzes
(Master thesis, 2016)Tetragonal tungsten bronzes (TTB) are remarkable materials for their potential for chemical substitution and disorder. The niobates of this kind are usually ferroelectric, and they can comprise both ordered and disordered ... -
Exploring lithium ion batteries for wind powered water injection
(Master thesis, 2016)In this work, lithium ion batteries consisting of carbon-coated silica (\ce{SiO2}) anodes and various commercial cathodes were prepared, tested, and analysed for use in a novel wind-powered water injection system, designed ... -
Exploring Silica from Diatom Frustules as a High Performance, Low Cost and Environmentally Friendly Anode Material for Lithium Ion Batteries
(Master thesis, 2017)In this work, silica extracted from diatom frustules was explored as a potential high performance, low cost and environmentally friendly anode material for lithium ion batteries. The diatom frustules were washed and calcined, ... -
Fabrication of Diffractive Honeycomb Structures on Silicon Using Photolithography and Maskless Aligner and Investigation of Optical and Electrical Properties of the Structures
(Master thesis, 2018)Surface texturing is an important method for increasing absorption of light in solar cells. This is done by creating surface structures that increase the optical path-length of photons within the cell, through light-trapping ... -
FIB/SEM Characterization of Paper Materials
(Master thesis, 2016)3D microscopy is of interest for structural characterization of paper materials to study the use of cellulose nanofibrils as a paper additive. Focused ion beam (FIB) tomography is a promising microscopy technique for this ... -
Finite temperature ab initio simulations of the lattice thermal conductivity of XNiBi, X=(Sc, Y, La), based half-Heuslers
(Master thesis, 2017)Over the past few years, the half-Heusler materials have attracted attention for their potential within thermoelectric applications. This is mainly due to the flexibility of half-Heusler crystal structure. The half-Heuslers ... -
First-Principles Calculations of Oxygen Vacancy Formation in Epitaxially Strained La1-xCaxMnO3
(Master thesis, 2016)Using epitaxial strain as a degree of freedom is a promising way to tailor the properties in thin films of transition metal oxides. Since the ground state of such materials tend to have many competing low-energy states ... -
Hydrazide Conjugated Oligoguluronates
(Master thesis, 2017)Advances reported in the field of amphiphilic block copolymers in recent years has demonstrated that predetermined structures can be formed from the self-organizing of amphiphilic molecules at interfaces or in solutions. ... -
Hydrothermal syntheis and characterization of BaTiO3 nanoparticles
(Master thesis, 2018)This thesis investigates the size dependent dipole disorder in ferroelectric materials, which leads to a loss of macroscopic ferroelectricity, and the role of the depolarization field on this disorder. Structural ... -
Investigation of bubble distribution and evolution in solar cell quartz crucibles
(Master thesis, 2017)Quartz crucibles are, among other applications, used to produce monocrystalline silicon ingots for the solar cell industry. The crucibles must be of high purity as any gas bubbles or impurities close to the crucible-melt ... -
Investigations of Pd3Au(100) as a catalytic model system
(Master thesis, 2018)Catalysts are defined as materials that lowers the activation energy of a reaction, without being consumed. In heterogeneous catalysis they are commonly transitions metals which have been refined to small particles using ... -
On the Cycling Performance and Stability of Silicon-Based Anodes in Lithium-Ion Batteries - Revealing Challenges and Failure Mechanisms Using Post Mortem Analyses
(Master thesis, 2017)Li-ion batteries with improved energy density can be obtained by increasing the Si content in the graphite electrode, or replace it entirely with a Si based electrode. This may have the additional benefit of improving ... -
Optimizing carbon coating of silica from diatom frustules as a high performance, low cost and environmentally friendly anode material for lithium ion batteries
(Master thesis, 2018)The goal of this work was to optimize the carbon coating of silica from diatom frustules as a high performance, low cost and environmentally friendly anode material for lithium ion batteries. This was done by investigating ...