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首页> 外文期刊>Applied Physics >Correlation analysis of symmetry breaking in the surface nanostructure ordering: case study of the ventral scale of the snake Morelia viridis
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Correlation analysis of symmetry breaking in the surface nanostructure ordering: case study of the ventral scale of the snake Morelia viridis

机译：表面纳米结构有序对称性破坏的相关性分析：蛇莫雷利亚蛇腹面尺度的研究

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摘要

In contrast to the majority of inorganic or artificial materials, there is no ideal long-range ordering of structures on the surface in biological systems. Local symmetry of the ordering on biological surfaces is also often broken. In the present paper, the particular symmetry violation was analyzed for dimple-like nano-pattern on the belly scales of the skin of the pythonid snake Morelia viridis using correlation analysis and statistics of the distances between individual nanostructures. The results of the analysis performed on M. viridis were compared with a well-studied nano-nipple pattern on the eye of the sphingid moth Manduca sexta, used as a reference. The analysis revealed non-random, but very specific symmetry violation. In the case of the moth eye, the nano-nipple arrangement forms a set of domains, while in the case of the snake skin, the nano-dimples arrangement resembles an ordering of particles (molecules) in amorphous (glass) state. The function of the nano-dimples arrangement may be to provide both friction and strength isotropy of the skin. A simple model is suggested, which provides the results almost perfectly coinciding with the experimental ones. Possible mechanisms of the appearance of the above nano-formations are discussed.
机译：与大多数无机或人工材料相比，在生物系统中，表面上没有理想的结构长期排序。生物表面上的有序局部对称也经常被破坏。在本文中，使用相关性分析和各个纳米结构之间距离的统计数据，分析了蟒蛇蛇莫雷利亚绿色皮肤腹部尺度上的酒窝状纳米图案的特殊对称性违规。将对绿孢假单胞菌进行的分析结果与经过仔细研究的鞘翅目曼杜卡六孔眼上的纳米乳头图案进行了比较，用作参考。分析显示非随机但非常特定的对称违反。在蛾眼的情况下，纳米乳头排列形成一组区域，而在蛇皮的情况下，纳米酒窝排列类似于无定形（玻璃）状态的颗粒（分子）的有序排列。纳米凹痕布置的功能可以是提供皮肤的摩擦力和强度各向同性。建议使用一个简单的模型，该模型提供的结果几乎与实验结果完全吻合。讨论了上述纳米形式出现的可能机理。

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  • 来源
    《Applied Physics》 |2016年第3期|253.1-253.6|共6页
  • 作者

    A. Kovalev; A. Filippov; S. N. Gorb;

  • 作者单位

    Functional Morphology and Biomechanics, Zoological Institute, Kiel University, 24118 Kiel, Germany;

    Functional Morphology and Biomechanics, Zoological Institute, Kiel University, 24118 Kiel, Germany,Department of Electronic and Kinetic Properties of Nonlinear Systems, Donetsk Institute for Physics and Engineering, National Academy of Science, Donetsk 83114, Ukraine;

    Functional Morphology and Biomechanics, Zoological Institute, Kiel University, 24118 Kiel, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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