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60keV N₂⁺轰击生成BN纳米结构

Formation of Boron Nitride Nanostructures by Means of 60keV N₂⁺ Ion Beam Bombardment

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【Author】 WANG Zhen-Xia, WANG Wen-Min, RUAN Mei-Ling (Shanghai Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai 201800, China ) (State Key Laboratory for High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics,

【机构】中国科学院上海原子核研究所!上海201800；中国科学院上海硅酸盐研究所高性能陶瓷和表面微结构国家重点开放实验室!上海200050；

【摘要】报道了Ｎ２＋离子轰击ＢＮ固体样品过程中，弯折ＢＮ片纳米结构和笼状小ＢＮ分子的形成．高分辨透射电子显微分析表明，厚度小于１３ｎｍ的ＢＮ片具有高度可弯折性，也观察到了一些直径为０．４—１．８ｎｍ，接近于Ｂ１２Ｎ１２，Ｂ１６Ｎ１６和Ｂ２０８Ｎ２０８的８面体笼状物．基于束流－固体相互作用观点，讨论了这些ＢＮ纳米结构的形成原因．更多还原

【Abstract】 The formation of bended BN nanostructures and small BN cage-like molecules, under Nc2+ ion-bombardment of BN samples, is reported. The analysis of high-resolution transmission electron microscopy indicates that bending the flat sp2 layers with strain or lattices defects directly under the mechanical deformation forms these BN nanostructures. In addition, the cages in diamlter range from about 0. 4 to 1. 8nm, closing to those of the B12 N12 , B16N16, and B208N208 octahedral, were observed. The origins of the bended BN sheets and small BN cages were discussed based on the viewpoint of beam-solid interaction.更多还原