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dc.contributor.advisorShao, Lin
dc.creatorAitkaliyeva, Assel
dc.date.accessioned2010-01-15T00:16:39Z
dc.date.accessioned2010-01-16T00:13:00Z
dc.date.available2010-01-15T00:16:39Z
dc.date.available2010-01-16T00:13:00Z
dc.date.created2009-08
dc.date.issued2010-01-14
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-2009-08-3251
dc.description.abstractIon irradiation of carbon nanotubes is a tool that can be used to achieve modification of the structure. Irradiation stability of carbon nanotubes was studied by ion and electron bombardment of the samples. Different ion species at various energies were used in experiments, and several defect characterization techniques were applied to characterize the damage. Development of dimensional changes of carbon nanotubes in microscopes operated at accelerating voltages of 30 keV revealed that binding energy of carbon atoms in CNs is much lower than in bulk materials. Resistivity measurements during irradiation demonstrated existence of a quasi state of defect creation. Linear relationship between ID/IG ratio and increasing irradiation fluence was revealed by Raman spectroscopy study of irradiated carbon buckypapers. The deviations from linear relationship were observed for the samples irradiated to very high fluence values. Annealing of irradiated samples was able to reduce the value of ID/IG ratio and remove defects. However, annealing could not affect ID/IG ratio and remove defects in amorphized samples. The extracted value of activation energy for irradiated sample was 0.36 ±0.05 eV. The value of activation energy was in good agreement with theoretical studies.en
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.subjectCarbon Nanotubesen
dc.subjectElectron Irradiationen
dc.subjectIon Irradiationen
dc.subjectRaman Spectroscopy of carbon nanotubesen
dc.subjectResistivity of Carbon Nanotubesen
dc.titleIrradiation Stability of Carbon Nanotubesen
dc.typeBooken
dc.typeThesisen
thesis.degree.departmentNuclear Engineeringen
thesis.degree.disciplineNuclear Engineeringen
thesis.degree.grantorTexas A&M Universityen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelMastersen
dc.contributor.committeeMemberMcDeavitt, Sean
dc.contributor.committeeMemberZhang, Xinghang
dc.type.genreElectronic Thesisen


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