dc.contributor.advisor | Çıracı, Salim | |
dc.contributor.author | Mehrez, Hatem | |
dc.date.accessioned | 2016-01-08T20:13:35Z | |
dc.date.available | 2016-01-08T20:13:35Z | |
dc.date.issued | 1996 | |
dc.identifier.uri | http://hdl.handle.net/11693/17808 | |
dc.description | Ankara : Department of Physics and Institute of Engineering and Science, Bilkent Univ., 1996. | en_US |
dc.description | Thesis (Master's) -- Bilkent University, 1996. | en_US |
dc.description | Includes bibliographical references leaves 77-80. | en_US |
dc.description.abstract | The 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.statementofresponsibility | Mehrez, Hatem | en_US |
dc.format.extent | ix, 80 leaves | en_US |
dc.language.iso | English | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | conductance | en_US |
dc.subject | nanowire | en_US |
dc.subject | atomic structure | en_US |
dc.subject | electron transport | en_US |
dc.subject | nanoindentation | en_US |
dc.subject | molecular dynamics | en_US |
dc.subject | mechanical properties | en_US |
dc.subject | bundles | en_US |
dc.subject | self-consistent field | en_US |
dc.subject | yield strength | en_US |
dc.subject.lcc | TK3301 .M44 1996 | en_US |
dc.subject.lcsh | Nanowires. | en_US |
dc.subject.lcsh | Nanostructured materials--Electric properties. | en_US |
dc.subject.lcsh | Electric contacts. | en_US |
dc.title | Electronic and atomic processes in nanowires | en_US |
dc.type | Thesis | en_US |
dc.department | Department of Physics | en_US |
dc.publisher | Bilkent University | en_US |
dc.description.degree | M.S. | en_US |