一维纳米材料的合成及显微结构

被引:6
作者
周光文
张泽
俞大鹏
机构
[1] 中国科学院凝聚态物理中心北京电子显微镜实验室!北京
[2] 北京大学物理系介观物理国家实验室!北京
关键词
激光沉积; 硅纳米线; 结构缺陷; 氮化硼纳米管;
D O I
暂无
中图分类号
TB381 [智能材料];
学科分类号
080501 ; 1405 ;
摘要
利用脉冲激光方法成功地制备了硅的一维纳米线 (SiNW )和氮化硼纳米管(BN -NTs) .该方法合成的一维纳米材料具有产量大 ,纯度高 ,直径均匀等特点 .利用透射电子显微镜对这些一维纳米材料的微观结构进行了表征 .观察到硅纳米线中存在微孪晶、堆垛层错、小角晶界等高密度的结构缺陷 .并且发现这些结构缺陷与硅纳米线的生长和形貌有着密切的关系 .BN -NTs主要为单层管 ,管的表面光滑而没有吸附物 ,单层管的形成可归结为在催化剂的作用下管的轴向生长速度远大于横向生长所致
引用
收藏
页码:85 / 91
页数:7
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