Theoretical study of crossed and parallel carbon nanotube junctions and three-dimensional grid structures

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buir.contributor.authorÇıracı, Salim
buir.contributor.orcidÇıracı, Salim|0000-0001-8023-9860
dc.citation.epage205407-9en_US
dc.citation.issueNumber20en_US
dc.citation.spage205407-1en_US
dc.citation.volumeNumber70en_US
dc.contributor.authorDag, S.en_US
dc.contributor.authorSenger, R. T.en_US
dc.contributor.authorÇıracı, Salimen_US
dc.date.accessioned2016-02-08T10:25:30Z
dc.date.available2016-02-08T10:25:30Z
dc.date.issued2004en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractThis work presents a first-principles study of parallel and crossed junctions of single-wall carbon nanotubes (SWNT). The crossed junctions are modeled by two-dimensional grids of zigzag SWNTs. The atomic and electronic structure, stability, and energetics of the junctions are studied for different magnitudes of contact forces pressing the tubes towards each other and hence inducing radial deformations. Under relatively weak contact forces the tubes are linked with intertube bonds which allow a significant conductance through the junction. These interlinking bonds survive even after the contact forces are released and whole structure is fully relaxed. Upon increasing contact force and radial deformation the tube surfaces are flattened but the interlinking bonds are broken to lead to a relatively wider intertube spacing. The intertube conductance through such a junction diminish because of finite potential barrier intervening between the tubes. The linkage of crossing tubes to form stable junctions is enhanced by a vacancy created at the contact. The three-dimensional grid structure formed by SWNTs is also investigated as a possible framework in device integration.en_US
dc.identifier.doi10.1103/PhysRevB.70.205407en_US
dc.identifier.issn0163-1829
dc.identifier.urihttp://hdl.handle.net/11693/24194
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.70.205407en_US
dc.source.titlePhysical Review B - Condensed Matter and Materials Physicsen_US
dc.subjectAb initio calculationen_US
dc.subjectArticleen_US
dc.subjectAtomen_US
dc.subjectAtomic force microscopyen_US
dc.subjectCalculationen_US
dc.subjectChemical bonden_US
dc.subjectConductanceen_US
dc.subjectElectronen_US
dc.subjectElectron transporten_US
dc.subjectEnergy transferen_US
dc.subjectForceen_US
dc.subjectNanotubeen_US
dc.subjectStructure analysisen_US
dc.subjectTheoretical studyen_US
dc.titleTheoretical study of crossed and parallel carbon nanotube junctions and three-dimensional grid structuresen_US
dc.typeArticleen_US

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