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The Mechanism of Cavitation-Induced Scission of Single-Walled Carbon Nanotubes

Hennrich, Frank and Krupke, Ralph and Arnold, Katharina and Rojas Stütz, Jan A. and Lebedkin, Sergei and Koch, Thomas and Schimmel, Thomas and Kappes, Manfred M. (2007):
The Mechanism of Cavitation-Induced Scission of Single-Walled Carbon Nanotubes.
In: The Journal of Physical Chemistry B, pp. 1932-1937, 111, (8), ISSN 1520-6106,
[Online-Edition: http://dx.doi.org/10.1021/jp065262n],
[Article]

Abstract

Aqueous suspensions of length selected single-walled carbon nanotubes were studied by atomic force microscopy (AFM) in order to probe the influence of sonication on nanotube scission. The maximum of the tube length distribution, lM, initially exhibits a power law dependence on the sonication time, t  roughly as lM ≈ t-0.5. This and the limiting behavior observed at longer times can be rationalized to first order in terms of a continuum model deriving from polymer physics. In this picture, the strain force associated with cavitation scales with the square of the nanotube length. Scission stops when the strain force falls below the critical value for nanotube disruption.

Item Type: Article
Erschienen: 2007
Creators: Hennrich, Frank and Krupke, Ralph and Arnold, Katharina and Rojas Stütz, Jan A. and Lebedkin, Sergei and Koch, Thomas and Schimmel, Thomas and Kappes, Manfred M.
Title: The Mechanism of Cavitation-Induced Scission of Single-Walled Carbon Nanotubes
Language: English
Abstract:

Aqueous suspensions of length selected single-walled carbon nanotubes were studied by atomic force microscopy (AFM) in order to probe the influence of sonication on nanotube scission. The maximum of the tube length distribution, lM, initially exhibits a power law dependence on the sonication time, t  roughly as lM ≈ t-0.5. This and the limiting behavior observed at longer times can be rationalized to first order in terms of a continuum model deriving from polymer physics. In this picture, the strain force associated with cavitation scales with the square of the nanotube length. Scission stops when the strain force falls below the critical value for nanotube disruption.

Journal or Publication Title: The Journal of Physical Chemistry B
Volume: 111
Number: 8
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Molekulare Nanostrukturen
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 08 Nov 2011 12:49
Official URL: http://dx.doi.org/10.1021/jp065262n
Identification Number: doi:10.1021/jp065262n
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