Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"surface relaxation"”.
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Magnetic surface relaxation and reconstruction phenomena in frustrated magnetic systems
This thesis is concerned with magnetism at the surfaces of frustrated magnets, and in particular with magnetism on face-centred cubic (FCC) lattice systems. Normally, magnets do not react to a surface. Frustrated magnets do, however, and we consider two cases: Magnetic relaxation and the more …
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Proton magnetic resonance of wood and water in wood
… a technique for analysing multi-exponential relaxation in terms of a continuous distribution of relaxation times was applied to T2 analysis of lumen water in wood. The lumen water T2 times vary as a function of the wood cell radius and are therefore expected to reflect the cell size …
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Numerical Simulation of 4th Order Total Variation Flow Problem by using C^0 IPDG Method
… flow problem in material science representing surface relaxation below the roughening temperature. Based on regularization and a scaling in time and space, the problem is discretized implicitly in time by the backward Euler scheme and discretized in space by C$^0$ Interior Penalty Discontinuous …
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Stability of Nanoporous Metals
… to probe the dominant mechanisms of geometric relaxation in these materials. A method is presented for generating model bicontinuous metal / void structures for use in atomistic simulations of bicontinuous nanoporous solids. The structures are generated with periodic boundary conditions using a …
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Approach to equilibrium in systems with continuous symmetries
… quenched systems with continuous symmetry, whose relaxational dynamics is dominated by topological defects. The general aspects of the problem are discussed in chapter 1. In chapters 2 and 3, we report the results of two and three dimensional simulations of a simple model with non-conserved order …
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Examining Topological Insulators and Topological Semimetals Using First Principles Calculations
… qualities and useful topologically protected surface states of topological insulators and semimetals. Topological materials have protected qualities which are not removed by weak perturbations. The manifestations of these qualities in topological insulators are spin-momentum-locked surface …
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Miscibility of polymer blends
… reflectivity. Preliminary results indicate that surface relaxation effects make the data interpretation difficult.
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Strain relaxation in TEM lamellae probed by 4D-STEM: from projected strain to dynamical-diffraction-based reconstruction of composition
… epitaxial growth partially relaxes at the free surfaces created during specimen preparation. The resulting three-dimensional strain field breaks the direct link between measured strain and composition, and intensity distribution within diffraction discs associated with dynamic diffraction …
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Approach to equilibrium in systems with continuous symmetries
… quenched systems with continuous symmetry, whose relaxational dynamics is dominated by topological defects. The general aspects of the problem and relevant theoretical, numerical and experimental results from the literature are discussed in chapter 1. In chapters 2 and 3, I report the results of …
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Study of thin metal films and oxide materials for nanoelectronics applications
… graphene oxide flakes. The crystallization and surface morphology of gold and copper films on SiO2/Si substrates is investigated as a function of annealing temperature. Annealing arranges the Au crystallites in the [111] direction and changes the morphology of the surface. Relaxation of the Au …