Title

Buckling instability of lipid tubules with multibilayer walls under local radial indentation

Authors

Authors

Y. Zhao; L. A. An;J. Y. Fang

Abbreviated Journal Title

Phys. Rev. E

Keywords

biomechanics; buckling; cellular biophysics; molecular biophysics; nanoindentation; proteins; self-assembly; ELASTIC PROPERTIES; PEPTIDE NANOTUBES; PROTEIN; TEMPERATURE; RELEASE; RIBBONS; MICROSTRUCTURES; MICROTUBULES; FABRICATION; DEPENDENCE; Physics, Fluids & Plasmas; Physics, Mathematical

Abstract

The mechanical behavior of self-assembled lipid tubules is an important property which determines their suitability for technological applications. We study the instability of multibilayer lipid tubules (with wall thickness t and external radius R(ext)) beyond elastic response under local radial atomic force microscopy indentations. A discontinuity in force-distance curves associated with the buckling instability of lipid tubules is observed. The critical force at which lipid tubules undergo a buckling transition linearly scales as t/R(ext). In addition, a reduced critical buckling force is found to extend a distance of similar to 1 mu m from the end of lipid tubules.

Journal Title

Physical Review E

Volume

80

Issue/Number

2

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

7

WOS Identifier

WOS:000269637800095

ISSN

1539-3755

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