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The growth of the screw dislocation of nacreous layer on Pteria penguin 被引量:3

The growth of the screw dislocation of nacreous layer on Pteria penguin
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摘要 In response to various environmental factors in offshore South China Sea,a group of microstructures of the screw dislocation are assembled in multiphase screw dislocations on the surface of the nacreous layer of Pteria penguin from the coastal waters of Hainan Island,China.The results of the transmission and scanning electronic microscope testing show that organic matter periodically secreted by epithelial histology of mantle of Pteria penguin pre-forms the original screw dislocation growth tem-plate in the form of film,along with its function to select,identify,and adhere to the amorphous calcium carbonate particles as the fine organic venations diffused in the epitaxial screw growth area.With the inducement and screw modulation of the or-ganic film and venations,the amorphous calcium carbonate particles gradually evolve into the pseudohexagonal self.aragonite microsheet with long-range order and screw dislocation structure by location-selecting tropism and screw dislocation growth.Numerous micron-scale aragonite microsheets join in the cluster's interactive movement and screw dislocation self-assembly of the organic film,stacking forward along the axis C spirally and forming the nacreous layer with screw dislocation structure. In response to various environmental factors in offshore South China Sea, a group of microstructures of the screw dislocation are assembled in multiphase screw dislocations on the surface of the nacreous layer of Pteria penguin from the coastal waters of Hainan Island, China. The results of the transmission and scanning electronic microscope testing show that organic matter periodically secreted by epithelial histology of mantle of Pteria penguin pre-forms the original screw dislocation growth tem- plate in the form of film, along with its function to select, identify, and adhere to the amorphous calcium carbonate particles as the fine organic venations diffused in the epitaxial screw growth area. With the inducement and screw modulation of the or- ganic film and venations, the amorphous calcium carbonate particles gradually evolve into the pseudohexagonal self. aragonite microsheet with long-range order and screw dislocation structure by location-selecting tropism and screw dislocation growth. Numerous micron-scale aragonite microsheets join in the cluster's interactive movement and screw dislocation self-assembly of the organic film, stacking forward along the axis C spirally and forming the nacreous layer with screw dislocation structure.
出处 《Science China Earth Sciences》 SCIE EI CAS 2011年第7期951-958,共8页 中国科学(地球科学英文版)
基金 supported by National Basic Research Program of China (Grant No. 49772096) National Basic Research Program of Hubei,China (Grant No. 2005ABA005)
关键词 Pteria penguin nacreous layer organic film aragonite micro sheet screw dislocation 企鹅珍珠贝 螺旋位错 生长温度 珍珠层 扫描电子显微镜 螺型位错 中国海南岛 环境因素
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