Sökning: "nano microstructure"
Visar resultat 1 - 5 av 62 avhandlingar innehållade orden nano microstructure.
1. The Functional Microstructure of Al/AlOx/Al Tunnel Junctions
Sammanfattning : Josephson junction as a novel superconducting electronic component plays an important role in most small-scale superconducting systems. Particularly the Al/AlOx/Al tunnel junction, a high-performance junction made with a well-established microfabrication technology, is widely used as a building block of many quantum circuits. LÄS MER
2. Characterization of nano-scale materials for interconnect and thermal dissipation application in electronics packaging
Sammanfattning : This thesis focuses on studies of nano-scale materials in electronic packaging applications with respect to following aspects: surface analysis of nano-scale oxide of lead-free solder particles, and thermal performance and mechanical property studies of nano-scale fiber and metal composite-based thermal interface materials. The composition and thickness of the solder oxide have a direct impact on the quality of interconnects and the reliability of a packaged system. LÄS MER
3. Shape Control Synthesis and Microstructure Studies of Metal Nanoparticles
Sammanfattning : Metal nanoparticles have been extensively studied in recent years due to their unique chemical, biological and physical properties. Gold (Au) and palladium (Pd) nanoparticles are two of the most popular materials because Au nanoparticles have a strong localized surface plasmon resonance effect and Pd nanoparticles have high hydrogen adsorption and chemical catalytic capacities. LÄS MER
4. Nano and Grain-Orientated Ferroelectric Ceramics Produced by SPS
Sammanfattning : Nano-powders of BaTiO3, SrTiO3, Ba0.6Sr0.4TiO3, a mixture of the composition (BaTiO3)0.6(SrTiO3)0. LÄS MER
5. Quantitative studies of changes in microstructure and activity during ageing of supported catalysts
Sammanfattning : Catalytic converters have substantially contributed to the improvement of air quality in populated areas in the last decades by abatement of the emission of hazardous componentssuch as CO, unburned hydrocarbons and NOx. However, due to the exposure to high temperature and different components in the exhaust gas, the performance of the catalysts degrades with time. LÄS MER