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Diameter-dependent bending dynamics of single-walled carbon nanotubes in liquids.

ABSTRACT: By relating nanotechnology to soft condensed matter, understanding the mechanics and dynamics of single-walled carbon nanotubes (SWCNTs) in fluids is crucial for both fundamental and applied science. Here, we study the Brownian bending dynamics of individual chirality-assigned SWCNTs in water by fluorescence microscopy. The bending stiffness scales as the cube of the nanotube diameter and the shape relaxation times agree with the semiflexible chain model. This suggests that SWCNTs may be the archetypal semiflexible filaments, highly suited to act as nanoprobes in complex fluids or biological systems.

SUBMITTER: Fakhri N

PROVIDER: S-EPMC2732870 | biostudies-other | 2009 Aug

REPOSITORIES: biostudies-other

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Diameter-dependent bending dynamics of single-walled carbon nanotubes in liquids.

Fakhri Nikta N Tsyboulski Dmitri A DA Cognet Laurent L Weisman R Bruce RB Pasquali Matteo M

Proceedings of the National Academy of Sciences of the United States of America 20090812 34

By relating nanotechnology to soft condensed matter, understanding the mechanics and dynamics of single-walled carbon nanotubes (SWCNTs) in fluids is crucial for both fundamental and applied science. Here, we study the Brownian bending dynamics of individual chirality-assigned SWCNTs in water by fluorescence microscopy. The bending stiffness scales as the cube of the nanotube diameter and the shape relaxation times agree with the semiflexible chain model. This suggests that SWCNTs may be the arc ...[more]

PMID: 19706503

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