Raman spectroscopy of double- and triple-walled carbon nanotubes: fundamental, combination, and overtone modes

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dc.contributorBarbosa Neto, Newton M.
dc.contributorMankey, Gary J.
dc.contributorHenderson, Conor
dc.contributorTse, Wang-Kong
dc.contributor.advisorAraujo, Paulo T.
dc.contributor.authorHue, Jia Wern
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2020-09-30T17:23:45Z
dc.date.available2020-09-30T17:23:45Z
dc.date.issued2020
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractA single-walled carbon nanotube (SWNT) is a graphene sheet rolled up into a tube. Double-walled (DWNT) and triple-walled carbon nanotubes (TWNT) are two and three coaxial SWNTs respectively. Isolated species of DWNTs and TWNTs were only recently probed and it can be considered as a new branch in carbon nanotube science. Phonons, and the combination of phonons and overtones are fundamental to understanding optical processes, transport and thermoelectricity in carbon nanotubes. To study these phonons, resonance Raman spectroscopy is employed on DWNT and TWNT bundles, as well as isolated TWNTs. The phonon modes of interest to this dissertation are the radial breathing mode (RBM), the G-band, and the M-band. From the RBM, it is learnt that for inner tubes with a tube diameter less than 1.2 nm, the curvature effects are dominant. Evidence for intertube interactions was found, although for outer tubes the environmental effects dominate. There was also evidence for commensurate and incommensurate tubes. Studying the G-band allowed for possible chiral indices to be identified for the middle and outer tubes of isolated TWNTs. In addition, the frequency shifts of TWNT G-band frequencies relative to SWNT G-band frequencies were studied and compared to TWNT G-band frequency shifts. As for the M-bands, phonon mode assignments for peaks between 1680 cm-1 to 1850 cm-1 were attempted.en_US
dc.format.extent124 p.
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otheru0015_0000001_0003565
dc.identifier.otherHue_alatus_0004D_14107
dc.identifier.urihttp://ir.ua.edu/handle/123456789/6964
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectCondensed matter physics
dc.subjectMaterials science
dc.titleRaman spectroscopy of double- and triple-walled carbon nanotubes: fundamental, combination, and overtone modesen_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Physics and Astronomy
etdms.degree.disciplinePhysics
etdms.degree.grantorThe University of Alabama
etdms.degree.leveldoctoral
etdms.degree.namePh.D.
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