{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/6514"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/6514","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"Modelling of defect states in covalent amorphous solids","abstract":"This study consists of the tight binding molecular dynamics simulations, of the bulk and defect structures, in hydrogenated amorphous silicon. Emphasis is given to the systematic analysis of the changes in the network structures, which occur due to the incorporation of hydrogen, at different levels of concentration. The atomic-level stress in the simulated structures is defined, in a manner that is consistent with the local structure. 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The concept of configurational landscapes is introduced, as a new analysis framework for the correlations between the stress fluctuations and the modifications of the local structure.","abstract_has_math":false,"creators":["Ukpong, Aniekan Magnus"],"institution":"Department of Physics","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Britton, David T","Härting, Margit"],"committee_chairs":[],"committee_members":[],"year":2008,"date_issued":"2008","date_published":"2008","updated_at":"2026-07-22T22:23:12Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/6514","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Britton, David T","Härting, Margit"]},{"key":"dc:creator","label":"Author","values":["Ukpong, Aniekan Magnus"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-08-13T20:03:26Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-08-13T20:03:26Z"]},{"key":"dc:date.issued","label":"Date","values":["2008"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Physics"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Doctoral Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["PhD"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/6514"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Includes abstract.","Includes bibliographical references (leaves 181-202)."]},{"key":"dc:description.abstract","label":"Abstract","values":["This study consists of the tight binding molecular dynamics simulations, of the bulk and defect structures, in hydrogenated amorphous silicon. Emphasis is given to the systematic analysis of the changes in the network structures, which occur due to the incorporation of hydrogen, at different levels of concentration. The atomic-level stress in the simulated structures is defined, in a manner that is consistent with the local structure. The concept of configurational landscapes is introduced, as a new analysis framework for the correlations between the stress fluctuations and the modifications of the local structure."]},{"key":"dc:title","label":"Title","values":["Modelling of defect states in covalent amorphous solids"]}]}],"canonical_facts":{"dc:contributor.advisor":["Britton, David T","Härting, Margit"],"dc:creator":["Ukpong, Aniekan Magnus"],"dc:date.accessioned":["2014-08-13T20:03:26Z"],"dc:date.available":["2014-08-13T20:03:26Z"],"dc:date.issued":["2008"],"dc:description":["Includes abstract.","Includes bibliographical references (leaves 181-202)."],"dc:description.abstract":["This study consists of the tight binding molecular dynamics simulations, of the bulk and defect structures, in hydrogenated amorphous silicon. Emphasis is given to the systematic analysis of the changes in the network structures, which occur due to the incorporation of hydrogen, at different levels of concentration. The atomic-level stress in the simulated structures is defined, in a manner that is consistent with the local structure. The concept of configurational landscapes is introduced, as a new analysis framework for the correlations between the stress fluctuations and the modifications of the local structure."],"dc:identifier.uri":["http://hdl.handle.net/11427/6514"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Physics"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["Modelling of defect states in covalent amorphous solids"],"dc:type":["Doctoral Thesis"],"dc:type.qualificationlevel":["Doctoral"],"dc:type.qualificationname":["PhD"]},"updated_at":"2026-07-22T22:23:12Z"}