Brownian dynamics simulations of single-wall carbon nanotube separation by type using dielectrophoresis

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dc.contributor.advisorPasquali, Matteo
dc.creatorMendes, Manuel Joao de Moura Dias
dc.date.accessioned2018-12-03T18:31:17Z
dc.date.available2018-12-03T18:31:17Z
dc.date.issued2008
dc.description.abstractWe theoretically investigate the separation of individualized metallic and semiconducting single-wall carbon nanotubes (SWNT) in a dielectrophoretic (DEP) flow device. The SWNTs motion is simulated by a Brownian Dynamics (BD) algorithm which includes the translational and rotational effects of hydrodynamic, Brownian, dielectrophoretic, and electrophoretic forces. The device geometry is chosen to be a coaxial cylinder, because it yields effective flow throughput, the DEP and flow fields are orthogonal to each other, and all the fields can be described analytically everywhere. We construct a flow-DEP phase map, showing different regimes depending on the relative magnitudes of the forces in play. The BD code is combined with an optimization algorithm that searches for the conditions which maximize the separation performance. The optimization results show that a 99% sorting performance can be achieved with typical SWNT parameters by operating in a region of the phase map where the metallic SWNTs completely orient with the field, whereas the semiconducting SWNTs partially flow align.
dc.format.extent68 pp
dc.identifier.callnoTHESIS CH.E. 2008 MENDES
dc.identifier.citationMendes, Manuel Joao de Moura Dias. "Brownian dynamics simulations of single-wall carbon nanotube separation by type using dielectrophoresis." (2008) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/103543">https://hdl.handle.net/1911/103543</a>.
dc.identifier.digital304508021
dc.identifier.urihttps://hdl.handle.net/1911/103543
dc.language.isoeng
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.
dc.subjectChemistry
dc.subjectChemical engineering
dc.subjectCondensation
dc.subjectApplied sciences
dc.subjectPure sciences
dc.titleBrownian dynamics simulations of single-wall carbon nanotube separation by type using dielectrophoresis
dc.typeThesis
dc.type.materialText
thesis.degree.departmentChemical Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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