Thermal Conductivity of Single Wall Carbon Nanotube and Copper Coaxial Nanocomposite

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dc.contributor.advisorBayazitoglu, Yildizen_US
dc.contributor.committeeMemberVajtai, Roberten_US
dc.contributor.committeeMemberChapman, Walter G.en_US
dc.creatorToprak, Kasimen_US
dc.date.accessioned2014-10-14T15:06:21Zen_US
dc.date.available2014-11-01T05:10:03Zen_US
dc.date.created2014-05en_US
dc.date.issued2014-01-09en_US
dc.date.submittedMay 2014en_US
dc.date.updated2014-10-14T15:06:21Zen_US
dc.description.abstractBased on non-equilibrium molecular dynamics, a model is developed to study the thermal conductivity of Single Wall Carbon Nanotube (SWCNT) inside filled with Copper (Cu), forming a coaxial composite in the form of a nanowire. The Nose-Hoover thermostat is used to maintain the opposing ends of the SWCNT-Cu nanowire at uniform temperatures of 320 K and 280 K. Firstly, the length dependent thermal conductivities are examined in vacuum using the simulated axial temperature profiles and by applying the Nose-Hoover thermostat. The effective thermal conductivity of copper nanowire is estimated based on the electrical resistance analogy. The calculations showed that the thermal conductivity of a SWCNT-Cu nanowire is up to 24% higher than that of a corresponding pure SWCNT. Secondly, the identical SWCNT-Cu nanowire is placed in water instead of vacuum. The conduction along the radial direction of this coaxial nanocomposite surrounded with water is examined. Due to its simplicity and adaptability, a simple point-charge water model is implemented. Using the Nose-Hoover thermostat, the copper core is kept at a uniform temperature as a heat source, and a circular edge layer of water is kept at a lower temperature as a heat sink in order to impose a radial temperature distribution. The temperature jump due to interface resistance at the SWCNT-water interface is found to be smaller than the temperature jump at the SWCNT-Cu interface.en_US
dc.embargo.terms2014-11-01en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationToprak, Kasim. "Thermal Conductivity of Single Wall Carbon Nanotube and Copper Coaxial Nanocomposite." (2014) Diss., Rice University. <a href="https://hdl.handle.net/1911/77563">https://hdl.handle.net/1911/77563</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/77563en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectSingle-walled carbon nanotubesen_US
dc.subjectCopper nanowireen_US
dc.subjectMolecular dynamic simulationen_US
dc.subjectThermal conductivityen_US
dc.subjectCoaxial nanocompositeen_US
dc.titleThermal Conductivity of Single Wall Carbon Nanotube and Copper Coaxial Nanocompositeen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentMechanical Engineering and Materials Scienceen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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