Blar i NTNU Open på emneord "Nanoteknologi, Nanoteknologi for materialer, energi og miljø"
Viser treff 21-33 av 33
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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 ... -
Organic Electrolytes for Thermoelectric Devices and CNT Electrode functionalization by Nitrogen-doping
(Master thesis, 2012)In this thesis a thermoelectric cell is developed. Aligned Carbon Nanotubes and aligned Nitrogen-doped Carbon Nanotubes are used as electrode materials. Ferri/Ferrocyanide and Tetrabutylammonium Nitrate (TBAN) electrolytes have ... -
Photochemistry of a Nucleobase Relevant to the Formation of Malignant Melanoma - Using Spectroscopic Techniques to Study the UV-Induced Damage of Thymine on MoS2
(Master thesis, 2016)Paring of nucleobases in deoxyribonucleic acid and the subsequent transcription of genes is arguably two of the most important processes for life. When subject to ultra violet (UV) light, one of the nucleobases, thymine, ... -
Photoluminescence Study of Enhanced Light Emission from HgCdTe Thin Films due to a Surface Pattern
(Master thesis, 2015)HgCdTe thin film samples with a CdTe passivation layer have been grown by molecular beam epitaxy, and photolithography has been used to etch a triangular pattern of holes into the passivation layer. The enhancement in ... -
Porous filters of nanofibrillated cellulose
(Master thesis, 2011)Filters for air purification are predominantly produced of synthetic and non-biodegradable materials. In this work, a range of various air filters have been prepared from 100% pure cellulosic material, with the goal to ... -
Rapid Directional Recrystallisation of SiGe Fibres
(Master thesis, 2015)Fibre av \ce{SiGe} fremstilt ved flytende kjerne-trekking har blitt rekrystallisert ved bruk av to forskjellige teknikker: Sakte kj{\o}ling i en tubeovn og bevegende smeltesone-rekrystallisering med en \ce{CO2}-laser. To ... -
Recrystallization of silicon core fibers by CO2 laser annealing
(Master thesis, 2017)The innovation of introducing silicon in the core of optical glass fibers has lately been of great interest to the optoelectronics industry. The application areas of silicon core fibers are ranging from medical imaging and ... -
Self-Assembly of Magnetic Nanoparticles into Superstructures for Magnonics
(Master thesis, 2015)Magnonics is a young and evolving field with the potential to replace conventional electronics. This field relies on the use of spin waves, or magnons, rather than electrons as the information carrier in logic devices, ... -
The Effect of LiFSI Salt Concentration and Electrolyte Additives on the Performance of Silicon Anodes for Lithium-Ion Batteries
(Master thesis, 2018)Lithium-ion batteries (LIBs) are currently the dominant battery technology. However, the increasing technological demands in areas like energy storage, transportation and consumer electronics, require significant upgrades ... -
The Influence of Polarization on the Wetting of Anodes in the Hall-Héroult Process
(Master thesis, 2016)Improvements in the Hall Héroult process for aluminium electrolysis has lead to a reduction in energy consumption from 20-25 kWh/kg Al 70 years ago, down to around 13-14 kWh/kg Al on average today. In order to further ... -
Towards Novel Metal-Polymer Interface Thermal Transport Model Systems
(Master thesis, 2018)Enhanced control of thermal transport through metal-polymer interfaces is in demand as metal-polymer composites and organic electronics proliferate while continuous component miniaturization is pursued. Thermal conductivity ... -
Transmission Electron Microscopy Characterization of Sintered and Hot-Pressed Silicon Carbide
(Master thesis, 2016)Silicon carbide has excellent mechanical properties. Sintered or hot-pressed (HP) SiC is essen- tial for applications that require dense bodies. In this work, the microstructure of one solid state sintered SiC and one ...