...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Structure-property relationships of a biological mesocrystal in the adult sea urchin spine
【24h】

Structure-property relationships of a biological mesocrystal in the adult sea urchin spine

机译：成年海胆脊柱中生物中晶的结构-性质关系

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Structuring over many length scales is a design strategy widely used in Nature to create materials with unique functional properties. We here present a comprehensive analysis of an adult sea urchin spine,and in revealing a complex, hierarchical structure, show how Nature fabricates a material which diffracts as a single crystal of calcite and yet fractures as a glassy material. Each spine comprises a highly oriented array of Mg-calcite nanocrystals in which amorphous regions and macromolecules are embedded. It is postulated that this mesocrystalline structure forms via the crystallization of a dense array of amorphous calcium carbonate (ACC) precursor particles. A residual surface layer of ACC and/or macromolecules remains around the nanoparticle units which creates the mesocrystal structure and contributes to the conchoidal fracture behavior. Nature's demonstration of how crystallization of an amorphous precursor phase can create a crystalline material with remarkable properties therefore provides inspiration for a novel approach to the design and synthesis of synthetic composite materials.
机译：在许多长度范围内构造结构是一种设计策略，在自然界中广泛使用，以创建具有独特功能特性的材料。在这里，我们对成年海胆脊椎进行了全面的分析，并揭示了复杂的层次结构，显示了大自然如何制造一种以方解石单晶衍射而又像玻璃状材料一样破裂的材料。每根脊柱都包含镁方解石纳米晶体的高度定向阵列，其中嵌入了非晶区和大分子。据推测，该中晶结构是通过无定形碳酸钙（ACC）前体颗粒的致密阵列的结晶形成的。 ACC和/或大分子的残留表面层保留在纳米颗粒单元周围，这产生了介晶结构并有助于贝壳状的断裂行为。大自然对无定形前体相的结晶如何产生具有显着特性的结晶材料的论证，因此为合成复合材料设计和合成的新颖方法提供了灵感。

著录项

  • 来源
  • 作者

    Jong Seto; Yurong Ma; Sean A. Davis; Fiona Meldrum; Aurelien Gourrier; Yi-Yeoun Kim; Uwe Schilde; Michael Sztucki; Manfred Burghammer; Sergey Maltsev; Christian Jager; Helmut Coelfen;

  • 作者单位

    Max-Planck-lnstitute of Colloids and Interfaces, Research Campus Golm, Am Muhlenberg 1, D-14424 Potsdam, Germany,University of Konstanz, Physical Chemistry, Universitatstr. 10, D-78457 Konstanz, Germany;

    Max-Planck-lnstitute of Colloids and Interfaces, Research Campus Golm, Am Muhlenberg 1, D-14424 Potsdam, Germany,Beijing National Laboratory for Molecular Sciences, College of Chemistry, Peking University, Beijing, 100871, China;

    School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom;

    School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, United Kingdom;

    ,European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP220, F-38043 Grenoble cedex, France;

    School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, United Kingdom;

    Institute of Chemistry,University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam-Golm, Germany;

    European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP220, F-38043 Grenoble cedex, France;

    European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP220, F-38043 Grenoble cedex, France;

    BAM Federal Institute for Materials Research and Testing,R. Willstaetter-Strasse 12, D-12489 Berlin, Germany;

    BAM Federal Institute for Materials Research and Testing,R. Willstaetter-Strasse 12, D-12489 Berlin, Germany;

    Max-Planck-lnstitute of Colloids and Interfaces, Research Campus Golm, Am Muhlenberg 1, D-14424 Potsdam, Germany,University of Konstanz, Physical Chemistry, Universitatstr. 10, D-78457 Konstanz, Germany,Laboratoire de Physique des Solides, Unite Mixte de Recherche 8502 Centre National de la Recherche Scientifique, Universite Paris-Sud, bat 510, F-91405 Orsay cedex, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    calcium carbonate biomineralization; echinoderm skeleton; hierarchical structuring; mesocrystal; skeletal elements;

    机译：碳酸钙生物矿化;棘皮动物骨骼;层次结构;中晶骨骼元素;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号