Show simple item record

dc.contributor.advisorBaytekin, Hasan Tarık
dc.contributor.authorMusa, Umar Gishiwa
dc.date.accessioned2016-09-20T12:47:34Z
dc.date.available2016-09-20T12:47:34Z
dc.date.copyright2016-08
dc.date.issued2016-08
dc.date.submitted2016-09-09
dc.identifier.urihttp://hdl.handle.net/11693/32240
dc.descriptionCataloged from PDF version of article.en_US
dc.descriptionThesis (M.S.): Bilkent University, Department of Materials Science and Nanotechnology, İhsan Doğramacı Bilkent University, 2016.en_US
dc.descriptionIncludes bibliographical references (leaves 53-62)en_US
dc.description.abstractThe static electricity that is generated when two identical or different materials come in contact with each other and separated is a well known physical phenomenon that has been studied for over 25 centuries. Contact charging occurs in technological and natural aspects of our everyday life. Generation of lightning and the feeling of unexpected shocks on dry days are excellent examples of naturally occurring phenomenon, while in technology it is used for photocopying and laser printing. Owing to the increase in energy consumption around the globe and demand for carbon emissions free energy sources, the triboelectric effect has recently being utilized as an e ffective means of harvesting mechanical energy and converting it into electricity for novel applications like powering portable electronic devices and self powered active sensing. Despite the fact that it has been known and applied for many years, the fundamental mechanism of contact electrification is still not fully understood. This study proposes a mechanism for triggering such triboelectric charge based on polymer-polymer and metal-polymer interactions. Conventionally, the mechanism of electrostatic charge generation is being presumed as a process giving rise to a combination of positive (arising from contact) and negative (arising from separation) charges in every single contact and separation. However, in our mechanism we propose a concept that shows combination of both positive and negative charges as \contact" and either positive or negative charge, depending on the initial contact-charge polarity of the material (due to surface charge mosaic), as \separation" charge. Different kinds of polymers like polydimethylsiloxane (PDMS), polytetra uoroethylene (PTFE), Polyethersulfone (PES) and polypropene (PP) were used in this study and similar characteristic was observed for all of the polymers. Thus, our perception of the working principle of triboelectri cation between two dielectric materials or a metal and a dielectric material is consistent and potentially vital in comprehending some unresolved controversies on triboelectricity.en_US
dc.description.statementofresponsibilityby Umar Gishiwa Musa.en_US
dc.format.extentxiii, 67 leaves : illustrations (some color), charts.en_US
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectContact electrificationen_US
dc.subjectMechanismen_US
dc.subjectTriboelectricityen_US
dc.subjectPolymeren_US
dc.subjectTriboelectric chargeen_US
dc.subjectContact and Separationen_US
dc.titleMechanism of triboelectricity: a novel perspective for studying contact electrification based on metal-polymer and polymer-polymer interactionsen_US
dc.title.alternativeTriboelektriğin mekanizması : metal-polimer ve polimer-polimer etkileşimi tabanlı kontakt elektriklenmede yeni bir konsepten_US
dc.typeThesisen_US
dc.departmentGraduate Program in Materials Science and Nanotechnologyen_US
dc.publisherBilkent Universityen_US
dc.description.degreeM.S.en_US
dc.identifier.itemidB154039
dc.embargo.release2018-09-08


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record