Buckling of lipid tubules in shrinking liquid droplets

    Authors

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

    Comments

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    Abbreviated Journal Title

    Nano Lett.

    Keywords

    STRETCHING DNA; MOLECULES; MICROSTRUCTURES; MICROTUBULES; TEMPLATES; NANOTUBE; LENGTH; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &; Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter

    Abstract

    Self-assembled hollow lipid tubules are interesting and potentially useful supramolecular structures. Here, we study the deformation of lipid tubules of 1,2-bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphocholine (DC8,9PC) trapped inside liquid droplets on glass substrates. The interface tension of the shrinking liquid droplets exerts a compression force on the ends of the trapped lipid tubules, and causes them to buckle. This provides a method to measure their mechanical properties. The Young's modulus of the DC8,9PC lipid tubules is estimated to similar to 1.07 GPa. As the strain energy of the buckled tubules builds up, they poke through the interface of shrinking liquid droplets and then adhere onto glass substrates to form looplike shapes.

    Journal Title

    Nano Letters

    Volume

    7

    Issue/Number

    5

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    1360

    Last Page

    1363

    WOS Identifier

    WOS:000246313000044

    ISSN

    1530-6984

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