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Structure and Mechanical Properties of a Pteropod Shell Consisting of Interlocked Helical Aragonite Nanofibers

Authors

  • Taiji Zhang,

    1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry, Peking University (PKU), Beijing 100871 (China)
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  • Prof. Yurong Ma,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry, Peking University (PKU), Beijing 100871 (China)
    • Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry, Peking University (PKU), Beijing 100871 (China)
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  • Dr. Kai Chen,

    1. National Center for Electron Microscopy, Lawrence Berkeley National Laboratory (LBNL), 1 Cyclotron Road, Berkeley, CA 94720 (USA)
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  • Dr. Martin Kunz,

    1. Advanced Light Source, LBNL, Berkeley, CA 94720 (USA)
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  • Dr. Nobumichi Tamura,

    1. Advanced Light Source, LBNL, Berkeley, CA 94720 (USA)
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  • Ming Qiang,

    1. College of Engineering, PKU, Beijing 100871 (China)
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  • Dr. Jun Xu,

    1. School of Physics, PKU, Beijing 100871 (China)
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  • Prof. Limin Qi

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry, Peking University (PKU), Beijing 100871 (China)
    • Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry, Peking University (PKU), Beijing 100871 (China)
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  • We thank Steve Weiner and Lia Addadi for fruitful discussions and Pupa Gilbert for kindly sharing her X-ray microdiffraction beamtime. Financial support from the National Basic Research Program of China (Grant Nos. 2007CB815602, 2007CB936201) and NSFC (Grant Nos. 50902002, 20873002, 21073005, and 50821061) is gratefully acknowledged. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Science Division, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 at LBNL.

Abstract

original image

Ein natürlicher ultradünner flexibler Panzer: Neuartige hierarchische Mikrostrukturen aus dicht gepackten helicalen Aragonitnanofasern wurden in einer ultradünnen Flügelschneckenschale nachgewiesen. Die helicalen Nanofasern sind verzahnt und kristallographisch bis 10° fehlorientiert. Diese Strukturmerkmale tragen eventuell zu den besonderen anisotropen mechanischen Eigenschaften der Schale bei.

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