Modeling the destruction of realistic nanotube emitters: Relative role of charging and temperature

Berber, Savas and Tománek, David. (2008) Modeling the destruction of realistic nanotube emitters: Relative role of charging and temperature. Physical Review B, 77 (7). 073407. ISSN 1098-0121

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Abstract

To discriminate between the effect of charge and temperature as the main cause of structural changes in nanotube-based field-electron emitters, we performed molecular dynamics simulations of charged single- and multiwall carbon nanotubes under realistic conditions. Our results indicate that cap-terminated nanotubes disintegrate abruptly under critical emission conditions. Disintegration, involving either desorption of cap fragments or a transformation into carbon chains and graphitic flakes, occurs prior to melting and is accelerated by Coulomb repulsion that destabilizes the charged tip.

Item Type: Article
Additional Information: Field emission
InterNano Taxonomy: Nanomanufacturing Characterization Techniques > Thermal Analysis
Nanoscale Objects and Nanostructured Materials > Nanotubes > Carbon nanotubes
Collections: Nanomanufacturing Research Collection
Depositing User: Moureen Kemei
Date Deposited: 21 Apr 2010 21:57
Last Modified: 21 Apr 2010 21:57
URI: http://eprints.internano.org/id/eprint/441

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