Electronic and atomic processes in nanowires

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buir.advisorÇıracı, Salim
dc.contributor.authorMehrez, Hatem
dc.date.accessioned2016-01-08T20:13:35Z
dc.date.available2016-01-08T20:13:35Z
dc.date.issued1996
dc.descriptionAnkara : Department of Physics and Institute of Engineering and Science, Bilkent Univ., 1996.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 1996.en_US
dc.descriptionIncludes bibliographical references leaves 77-80.en_US
dc.description.abstractThe variation of conductance of a nanowire which is pulled between two metal electrodes has been the subject of dispute. Recent experimental set-ups using a combination of STM and AFM show that changes in conductivity are closely related with modification of atomic structure. In this thesis electron transport in the nanoindentation and in the connective neck are studied and features of measured conductance are analyzed. Molecular Dynamics simulations of nanowires under tensile stress are carried out to reveal the mechanical properties in nanowires in the course of stretching. A novel type of plcistic deformation, which leads to the formation of bundles with “giant” yield strength is found. An extensive analysis on how abrupt changes in the conductance and the last plateau before the break are related with “quantization phenomena” and atomic structure rearrangements in the neck. By using ab-initio self-consistent field pseudopotential calculations we also investigated electron properties of nanowires and atomic chains and predicted the large yield strength observed in the center of connective neck.en_US
dc.description.provenanceMade available in DSpace on 2016-01-08T20:13:35Z (GMT). No. of bitstreams: 1 1.pdf: 78510 bytes, checksum: d85492f20c2362aa2bcf4aad49380397 (MD5)en
dc.description.statementofresponsibilityMehrez, Hatemen_US
dc.format.extentix, 80 leavesen_US
dc.identifier.urihttp://hdl.handle.net/11693/17808
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectconductanceen_US
dc.subjectnanowireen_US
dc.subjectatomic structureen_US
dc.subjectelectron transporten_US
dc.subjectnanoindentationen_US
dc.subjectmolecular dynamicsen_US
dc.subjectmechanical propertiesen_US
dc.subjectbundlesen_US
dc.subjectself-consistent fielden_US
dc.subjectyield strengthen_US
dc.subject.lccTK3301 .M44 1996en_US
dc.subject.lcshNanowires.en_US
dc.subject.lcshNanostructured materials--Electric properties.en_US
dc.subject.lcshElectric contacts.en_US
dc.titleElectronic and atomic processes in nanowiresen_US
dc.typeThesisen_US
thesis.degree.disciplinePhysics
thesis.degree.grantorBilkent University
thesis.degree.levelMaster's
thesis.degree.nameMS (Master of Science)

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