High friction of a vertically aligned carbon-nanotube film in microtribology
The frictional behavior of a vertically aligned carbon-nanotube (VACNT) film against gold tips was studied in air. In these experiments, the film was 6 μm thick, the tip radii 4.5-30 μm, the applied forces smaller than 5 μN, and speeds were 0.15-24 μm/s. In spite of the null adhesion force to the go...
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| Veröffentlicht in: | Applied physics letters 2004-10, Vol.85 (14), p.2780-2781 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The frictional behavior of a vertically aligned carbon-nanotube (VACNT) film against gold tips was studied in air. In these experiments, the film was 6 μm thick, the tip radii 4.5-30 μm, the applied forces smaller than 5 μN, and speeds were 0.15-24 μm/s. In spite of the null adhesion force to the gold tip, extremely high friction coefficients of 1.0-2.2 were found for the VACNT film. No dependence of friction on speed or tip radius was observed. |
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| ISSN: | 0003-6951 1077-3118 |
| DOI: | 10.1063/1.1804254 |