Essays about: "AlN"
Showing result 1 - 5 of 11 essays containing the word AlN.
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1. Heteroepitaxial Growth of GaN Film on Si substrate by Magnetron Sputtering
University essay from Linköpings universitet/Institutionen för fysik, kemi och biologiAbstract : In this study, the effect of AlN buffer layer structure and morphology on the GaN films deposited on Si (111) substrate by reactive DC magnetron sputtering have been studied. For structural and morphological characterization X-ray diffraction (XRD) and Scanning electron microscope (SEM) were used. READ MORE
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2. Bridging the gap between food production and consumption : how alternative food networks forage the Berlin Foodscape
University essay from SLU/Department of Molecular SciencesAbstract : Venturing into bridging the gap between food production and consumption, metropolitan Alternative Food Networks (AFNs) are increasingly gaining momentum in the Global North. Nevertheless, people interested and participating in these initiatives form a rather homogenous group of highly educated and better-off consumers. READ MORE
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3. Study of HfN as seed layer for next generation of BAW RF filters : synthesis, characterization, and investigation of piezoelectric performance
University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikAbstract : Micro-electro-mechanical systems (MEMS) have become an essential component of a wide range ofelectronic devices over the last decades such as accelerometers, microphones, gas sensors, and filters.During this new millennium, a new radio frequency (RF) technology has been developed to satisfy thetough demands that arose due to the implementation of 5G wireless communication: bulk acoustic wave(BAW) filters. READ MORE
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4. Quantum Chemical Feasibility Study of Methylamines as Nitrogen Precursors in Chemical Vapor Deposition
University essay from Linköpings universitet/KemiAbstract : The possibility of using methylamines instead of ammonia as a nitrogen precursor for the CVD of nitrides is studied using quantum chemical computations of reaction energies: reaction electronic energy (Δ𝑟𝐸𝑒𝑙𝑒𝑐) reaction enthalpy (Δ𝑟𝐻) and reaction free energy (Δ𝑟𝐺). The reaction energies were calculated for three types of reactions: Uni- and bimolecular decomposition to more reactive nitrogen species, adduct forming with trimethylgallium (TMG) and trimethylaluminum (TMA) followed by a release of methane or ethane and surface adsorption to gallium nitride for both the unreacted ammonia or methylamines or the decomposition products. READ MORE
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5. Thermal Stability of cubic and nanocrystalline arcevaporated TiCrAlN coatings
University essay from Linköpings universitet/Nanostrukturerade material; Linköpings universitet/Tekniska högskolanAbstract : (TixCryAlz)N coatings were deposited on WC-Co substrate using cathodic arc evaporation technique to investigate phase transformation, thermal stability, and high temperature mechanical properties. Two compositions Ti0.34Cr0.33Al0. READ MORE