Marquardt, Christoph W. ; Blatt, Sabine ; Hennrich, Frank ; Löhneysen, Hilbert v. ; Krupke, Ralph (2006)
Probing dielectrophoretic force fields with metallic carbon nanotubes.
In: Applied Physics Letters, 89 (18)
doi: 10.1063/1.2372771
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The authors show that single-walled carbon nanotubes are effective probes for dielectrophoretic force fields by studying their deposition pattern on surfaces. Different force fields were generated by electrodes on insulating oxides, with or without conducting substrates underneath. The patterns were recorded by scanning electron microscopy and simulated by finite element calculations. The data show that a sign change of the normal component of the dielectrophoretic force close to the substrate surface can lead to a repulsion of metallic carbon nanotubes from the surface. The authors present geometrical constraints to avoid such a sign change in the dielectrophoretic force.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Marquardt, Christoph W. ; Blatt, Sabine ; Hennrich, Frank ; Löhneysen, Hilbert v. ; Krupke, Ralph |
| Art des Eintrags: | Bibliographie |
| Titel: | Probing dielectrophoretic force fields with metallic carbon nanotubes |
| Sprache: | Englisch |
| Publikationsjahr: | 30 Oktober 2006 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 89 |
| (Heft-)Nummer: | 18 |
| DOI: | 10.1063/1.2372771 |
| Kurzbeschreibung (Abstract): | The authors show that single-walled carbon nanotubes are effective probes for dielectrophoretic force fields by studying their deposition pattern on surfaces. Different force fields were generated by electrodes on insulating oxides, with or without conducting substrates underneath. The patterns were recorded by scanning electron microscopy and simulated by finite element calculations. The data show that a sign change of the normal component of the dielectrophoretic force close to the substrate surface can lead to a repulsion of metallic carbon nanotubes from the surface. The authors present geometrical constraints to avoid such a sign change in the dielectrophoretic force. |
| Freie Schlagworte: | carbon nanotubes, scanning electron microscopy, finite element analysis, probes, electrophoresis, electrodeposition |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Molekulare Nanostrukturen 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 08 Nov 2011 12:52 |
| Letzte Änderung: | 05 Mär 2013 09:55 |
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