Gan, Yanjie ; Kotakoski, J. ; Krasheninnikov, A. V. ; Nordlund, K. ; Banhart, F. (2008)
The diffusion of carbon atoms inside carbon nanotubes.
In: New Journal of Physics, 10 (2)
doi: 10.1088/1367-2630/10/2/023022
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
We combine electron irradiation experiments in a transmission electron microscope with kinetic Monte Carlo simulations to determine the mobility of interstitial carbon atoms in single-walled carbon nanotubes. We measure the irradiation dose necessary to cut nanotubes repeatedly with a focused electron beam as a function of the separation between the cuts and at different temperatures. As the cutting speed is related to the migration of displaced carbon atoms trapped inside the tube and to their recombination with vacancies, we obtain information about the mobility of the trapped atoms and estimate their migration barrier to be about 0.25 eV. This is an experimental confirmation of the remarkably high mobility of interstitial atoms inside carbon nanotubes, which shows that nanotubes have potential applications as pipelines for the transport of carbon atoms.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Gan, Yanjie ; Kotakoski, J. ; Krasheninnikov, A. V. ; Nordlund, K. ; Banhart, F. |
| Art des Eintrags: | Bibliographie |
| Titel: | The diffusion of carbon atoms inside carbon nanotubes |
| Sprache: | Englisch |
| Publikationsjahr: | 2 Februar 2008 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | New Journal of Physics |
| Jahrgang/Volume einer Zeitschrift: | 10 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1088/1367-2630/10/2/023022 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We combine electron irradiation experiments in a transmission electron microscope with kinetic Monte Carlo simulations to determine the mobility of interstitial carbon atoms in single-walled carbon nanotubes. We measure the irradiation dose necessary to cut nanotubes repeatedly with a focused electron beam as a function of the separation between the cuts and at different temperatures. As the cutting speed is related to the migration of displaced carbon atoms trapped inside the tube and to their recombination with vacancies, we obtain information about the mobility of the trapped atoms and estimate their migration barrier to be about 0.25 eV. This is an experimental confirmation of the remarkably high mobility of interstitial atoms inside carbon nanotubes, which shows that nanotubes have potential applications as pipelines for the transport of carbon atoms. |
| ID-Nummer: | Artikel-ID: 023022 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung |
| Hinterlegungsdatum: | 28 Feb 2012 15:17 |
| Letzte Änderung: | 06 Mär 2024 06:19 |
| PPN: | |
| Sponsoren: | We thank the DAAD and ETC for an exchange grant (D/05/51651) and the Academy of Finland for support through several projects and the Centre of Excellence programme., We are also indebted to the Finnish Center for Scientific Computing for generous grants of computer time. |
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The diffusion of carbon atoms inside carbon nanotubes. (deposited 05 Mär 2024 10:24)
- The diffusion of carbon atoms inside carbon nanotubes. (deposited 28 Feb 2012 15:17) [Gegenwärtig angezeigt]
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