Molecular junctions by joining single-walled carbon nanotubes.

Molecular junctions by joining single-walled carbon nanotubes.

Crossing single-walled carbon nanotubes can be joined by electron beam welding to form molecular junctions. Stable junctions of various geometries are created in situ in a transmission electron microscope. Electron beam exposure at high temperatures induces structural defects which promote the joini...

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Detalles Bibliográficos
Main Authors: Terrones, M, Banhart, F, Grobert, N, Charlier, J, Terrones, H, Ajayan, P
Formato: Journal article
Idioma:English
Publicado: 2002
Descripción
Summary:Crossing single-walled carbon nanotubes can be joined by electron beam welding to form molecular junctions. Stable junctions of various geometries are created in situ in a transmission electron microscope. Electron beam exposure at high temperatures induces structural defects which promote the joining of tubes via cross-linking of dangling bonds. The observations are supported by molecular dynamics simulations which show that the creation of vacancies and interstitials induces the formation of junctions involving seven- or eight-membered carbon rings at the surface between the tubes.

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