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.
Results
Showing 1 to 8 of 8 for “"stepped surface"”.
-
Photoemission Studies of Thin Metallic Overlayer Systems
… Au(111), and Si(111)-(7x7). The properties of surface states were also examined for several related systems: Cu(111) covered by various thicknesses of Ag, and a bare Cu(332) stepped surface. Monolayer overlayers that are incommensurate with the substrate Ag on Ni(001), Ni(111), and Cu(111) or …
-
Photoemission studies of thin metallic overlayer sytems
… Au(lll), and Si(lll)-(7x7). The properties of surface states were also examined for several related systems: Cu(lll) covered by various thicknesses of Ag, and a bare Cu(332) stepped surface. Monolayer overlayers that are incommensurate with the substrate [Ag on Ni(OOl), Ni(lll), and Cu(lll)] or …
-
A DFT study of the interaction of Ox with Pt nanorod edge sites : a model for the ORR activity on Pt nanoparticle edges
… activity and hence reduce platinum loading. The surface-area-specific ORR activity has been reported to decrease with platinum particle size. This places a limitation to the degree to which platinum loading can be reduced by increasing metal dispersion. To understand the origin of this behaviour, …
-
Fluvial geomorphology and paleofloods in arid central Australia
… and migrate laterally. The flood plains have stepped surface morphologies with prominent flood channels on their surfaces and back channels often occur between surface elements at different elevations. Swirl pits develop around large River Red Gums (Eucalypcus camadulensis). The principal …
-
Fluvial geomorphology and paleofloods in arid central Australia
… and migrate laterally. The flood plains have stepped surface morphologies with prominent flood channels on their surfaces and back channels often occur between surface elements at different elevations. Swirl pits develop around large River Red Gums (Eucalypcus camadulensis). The principal …
-
Structure and faceting of low-symmetry metal surfaces
… determining the atomic structure of crystalline surfaces. The dual advantages of high intensity and high resolution have made this technique thrive at synchrotron radiation sources. The experiments in this thesis extend surface x-ray diffraction to metal surfaces with particularly low symmetry: …
-
Quantum-size effects in the electronic structure of novel self-organized systems with reduced dimensionality
… of lower dimensionality have been studied. Stepped surfaces W(331) and W(551) were used as one-dimensional model systems and as templates for self-organization of Au nanoclusters. Photon energy dependent photoemission revealed a surface resonance which was never observed before on W(110) …
-
Thermodynamics and kinetics of hydrogen storage in magnesium hydride: a theoretical study of catalyst-dopant, defect, and size effects
… desorption from nanoclusters and semi-infinite stepped surfaces with and without transition-metal “catalyst” dopants (Ti or Fe). The large 450-atom supercell of the (110)x(1 ̅10) single stepped terrace permits the study of the effects of catalytic dopant with 10 unique dopant sites at step …