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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
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Modelling damage and fracture evolution in plasma sprayed ceramic coatings : effect of microstructureZhao, Jian January 2005 (has links)
No description available.
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A spectroscopic study of modified tetrahedral amorphous carbon (ta-C) and hydrogenated amorphous carbon (a-C:H) films for diffusion barrier applicationsAbbas, Gamal A.-W. January 2004 (has links)
No description available.
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Automated measurement of complx engineering surfaces using multistation photogrammetryPapadaki, Helen January 2003 (has links)
No description available.
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Electrical and optical properties of poly(3-hexylthiophene) ultrathin native and composite filmsNicholson, Patrick George January 2006 (has links)
No description available.
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High temperature oxidation of platinum aluminide coated CMSX-4Ooi, Thian Ngan January 2007 (has links)
No description available.
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Solid source MBE growth of InAs / InP(001)Barnes, Gareth William January 2004 (has links)
No description available.
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The correlation of grain boundary chemistry and structure with electrical properties in high temperature superconducting thin filmsDark, Christopher James January 2005 (has links)
No description available.
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Nanoindentation of metallic materials : time-dependent and crystallographic effectsRastegar Tohid, Reza January 2007 (has links)
No description available.
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An experimental and theoretical study of elastohydrodynamically lubricated contacts with well defined surface featuresFeÌlix-Quiñonez, Armando January 2003 (has links)
No description available.
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Multiscale modelling of heteroepitaxial thin filmsWang, Tong January 2006 (has links)
Multiscale models are developed to investigate the evolution of heteroepitaxial thin films at high temperatures via surface diffusion. Continuum models for the kinetics and thermodynamics of these systems are derived from atomistic potentials in chapter 2. A modified Lennard-Jones potential is used to introduce a coordination dependence and model the effects of surface stress. Novel hybrid atomistic-continuum models are developed in chapter 3 to investigate the static elastic field around a surface step due to the discontinuity in surface stress. They have atomic scale resolution around the defect to capture the non-linear response in highly deformed areas. Far away from the discontinuity, classical linear elasticity is used. An analytic force dipole model and the more general finite element method are chosen to represent the continuum. The kinetics of surface evolution are then investigated using a fully atomistic off-lattice Kinetic Monte Carlo (KMC) model. This allows the atoms on the surface of an atomistic lattice statics simulation to evolve via diffusive events, and readily incorporates the non-linear effects of strain on the thermodynamics and kinetics of the system. The flattening process of a rough (sinusoidal) surface is considered in chapter 4. The results are then compared with a derivative microscopic step flow model in chapter 5, which is extended to consider asymmetric step kinetics. The parameters in the step flow model are obtained from the interatomic potentials and are used to determine estimates of the macroscopic surface mobilities. The evolution of strained surfaces is investigated in chapter 6 using the off-lattice KMC model. The surface is found to be stable below a certain strain magnitude, in contradiction of the predictions of conventional theories. A new theory based on a discontinuous (cusped) surface energy orientation function is proposed and found to explain the simulation results.
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