Friction and Adhesion of Atomically Thin Films: A Study of Few-layer Graphene

Simple item page
atmire.migration.oldid5231
dc.contributor.advisorEgberts, Philip
dc.contributor.authorGong, Peng
dc.contributor.committeememberEgberts, Philip
dc.contributor.committeememberBirss, Viola
dc.contributor.committeememberKaran, Kunal
dc.contributor.committeememberFederico, Salvatore
dc.date.accessioned2017-01-10T22:27:33Z
dc.date.available2017-01-10T22:27:33Z
dc.date.issued2017
dc.date.submitted2017en
dc.description.abstractIn order to gain better insight on the fundamental mechanisms governing friction and adhesion at the nanoscale, this thesis examines the friction and adhesion properties and mechanisms on the atomically-thin material, graphene. First, through conducting load dependent measurements of friction on mechanical exfoliated graphene samples, the dependence of the friction behaviour on graphene as a function of number of graphene layers, sliding history, environmental humidity, and air exposure time were examined. A mechanism was proposed to fully explain these experimental observations. Secondly, the finite element method (FEM) was applied to investigate the adhesion between a nanoscale tip and graphene covering a silicon substrate. The simulations, contrary to prior experimental results, showed a slight increase in the pull-off force as layer number increased. In addition, it was revealed that the layer-dependent pull-off forces result from the increasing tipgraphene interactions. This work contributes to gaining better insight on the applications to the lubrication mechanisms of graphene.en_US
dc.identifier.citationGong, P. (2017). Friction and Adhesion of Atomically Thin Films: A Study of Few-layer Graphene (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26226en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26226
dc.identifier.urihttp://hdl.handle.net/11023/3556
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectMaterials Science
dc.subject.otherGraphene
dc.subject.otherFriction
dc.subject.otherAdhesion
dc.titleFriction and Adhesion of Atomically Thin Films: A Study of Few-layer Graphene
dc.typemaster thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
Files
Collections
Open Theses and Dissertations