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dc.contributor.advisorRiedo, Elisa
dc.contributor.authorGao, Yang
dc.date.accessioned2018-05-31T18:09:26Z
dc.date.available2018-05-31T18:09:26Z
dc.date.created2017-05
dc.date.issued2017-04-07
dc.date.submittedMay 2017
dc.identifier.urihttp://hdl.handle.net/1853/59799
dc.description.abstractAtomic Force Microscopy (AFM) is a powerful tool for the characterization and fabrication of two-dimensional materials, which are films of a few atomic layers with strong in-plane bonds and weak van der Waals interactions between the layers. The in-plane elasticity has been widely studied with nano-indentation where a suspended 2D film is bent substantially (~10nm to 1000nm). In this thesis we report on a novel AFM-based sub-Å-resolution indentation technique: Modulated nano-indentation (MoNI) or "Å-indentation". MoNI can allow for indentation below 1 Å, smaller than the inter-layer distance of most 2D materials. The perpendicular-to-the-plane elasticity of 2D materials can be detected with MoNI at extremely high precision while the in-plane covalent bonds are negligible. The inter-layer elasticity as well as intercalation properties of epitaxial graphene, graphene oxide and other 2D materials were carefully investigated. Furthermore, the fingerprint of a new ultra-hard phase of epitaxial graphene on SiC(0001), indicating possible diamondization at room temperature, has been observed and reported in this thesis.
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technology
dc.subjectAFM
dc.subjectTwo-dimensional materials
dc.subjectvan der Waals force
dc.subjectElasticity
dc.titleForce microscopy of two-dimensional materials
dc.typeDissertation
dc.description.degreePh.D.
dc.contributor.departmentPhysics
thesis.degree.levelDoctoral
dc.contributor.committeeMemberFirst, Phillip
dc.contributor.committeeMemberDavidovic, Dragomir
dc.contributor.committeeMemberJiang, Zhigang
dc.contributor.committeeMemberDegertekin, Levent
dc.date.updated2018-05-31T18:09:26Z


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