Current-Induced Plastic Deformation of Double-Walled Carbon Nanotubes
Current-Induced Plastic Deformation of Double-Walled Carbon Nanotubes
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DOI：
10.1143/jjap.44.l720
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发表时间：
2005-05
影响因子：
1.5
通讯作者：
Y. Nakayama;A. Nagataki;O. Suekane;X. Cai;S. Akita
中科院分区：
文献类型：
--
作者：
Y. Nakayama;A. Nagataki;O. Suekane;X. Cai;S. Akita
我们通过向在机械压力下弹性弯曲的单个纳米管施加电流，在原本直的双壁纳米管中诱导了永久塑性变形。这种方法是可控的，允许纳米管作为构建块在纳米结构中的应用。将五角形-七角形对插入到纳米管中，可以产生20-30°的弯曲角度。用目前的周向密度测量，塑性变形的起始值不到升华的1/20。起始点随着纳米管直径的增大而减小。这一过程是使用透射电子显微镜进行的：电子束能量对该过程不是必不可少的，但会降低起始点。
We induced a permanent plastic deformation in an originally straight double-walled nanotube by applying current to an individual nanotube that had been bent elastically under mechanical duress. This method is controllable and allows nanotubes' application as building blocks in nanostructures. Inserting pentagon–heptagon pairs into a nanotube created bending angles of 20–30°. The onset of plastic deformation, as measured using the current circumference-density, is less than 1/20 that of the sublimation. The onset decreases with increasing nanotube diameter. This process is performed using a transmission electron microscope: electron beam energy is not essential for the process but decreases the onset.