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首页> 外文期刊>Nanotechnology >Symmetric growth of carbon nanosheets on Cu nanowires by a surface diffusion mechanism
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Symmetric growth of carbon nanosheets on Cu nanowires by a surface diffusion mechanism

机译：通过表面扩散机制在铜纳米线上对称生长碳纳米片

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摘要

Aligned carbon nanosheets were synthesized by chemical vapor deposition using acetylene as a source gas and Cu nanowires as catalysts at 250 degrees C. The nanosheets follow the alignment of the original Cu nanowire arrays. Each Cu nanowire always initiates the symmetric growth of twin nanosheets in opposite directions. The length of the nanosheets is several microns, similar to that of the Cu nanowires. Their thickness is about 100 nm and is controlled by the diameter of the Cu nanowires. Their width depends on growth time, which is about 1.2 mu m for 20 min of growth. During the two-dimensional growth, the Cu nanowires maintain their one-dimensional shape. The nanosheets grow by surface diffusion of growth species on Cu nanowires, instead of a vapor-liquid-solid mechanism. This nanowire-catalyzed chemical vapor deposition method is simple and can be extended to the fabrication of other two-dimensional nanostructures.
机译：取向碳纳米片是通过化学气相沉积法合成的，使用乙炔作为原料气，铜纳米线作为催化剂在250摄氏度下进行。纳米片遵循原始铜纳米线阵列的取向。每条铜纳米线总是在相反的方向上引发双纳米片的对称生长。纳米片的长度为几微米，类似于铜纳米线的长度。它们的厚度约为100 nm，并受Cu纳米线的直径控制。它们的宽度取决于生长时间，生长20分钟大约需要1.2微米。在二维生长期间，Cu纳米线保持其一维形状。纳米片是通过生长物种在Cu纳米线上的表面扩散而不是通过汽-液-固机理而生长的。这种纳米线催化的化学气相沉积方法很简单，可以扩展到其他二维纳米结构的制造。

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