Persistence of a pinch in a pipe

Details Persistence of a pinch in a pipe Persistence of a pinch in a pipe

2006-07-13

arxiv.org/abs/cond-mat/0607339v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 3 figures

Scientific paper

The response of low-dimensional solid objects combines geometry and physics in unusual ways, exemplified in structures of great utility such as a thin-walled tube that is ubiquitous in nature and technology. Here we provide a particularly surprising consequence of this confluence of geometry and physics in tubular structures: the anomalously large persistence of a localized pinch in an elastic pipe whose effect decays very slowly as an oscillatory exponential with a persistence length that diverges as the thickness of the tube vanishes, which we confirm experimentally. The result is more a consequence of geometry than material properties, and is thus equally applicable to carbon nanotubes as it is to oil pipelines.

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