Three-dimensional growth mechanism of cosmo-mimetic carbon microcoils obtained by chemical vapor deposition

被引：123

作者：

Motojima, S ^{[1
]}

Chen, QQ ^{[1
]}

机构：

[1] Gifu Univ, Fac Engn, Dept Appl Chem, Gifu 5011193, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 1999年 / 85卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.369765

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cosmo-mimetic carbon microcoils with a three-dimensional helical/spiral structure similar to deoxynucleic acid, having coil diameters of 3-6 mu m and coil lengths of 5-8 mm could be obtained by the catalytic pyrolysis of acetylene. A three-dimensional growth model of the carbon coils, based on the anisotropy for the carbon deposition among three crystal faces, is proposed. The microcoiling morphology is formed by the rotation of a Ni catalyst grain, from which six fibers grow and coalesce with each other, followed by the formation of two fibers, and these two fibers entwine in the same direction and at the same speed of about one cycle per second around the coil axis. (C) 1999 American Institute of Physics. [S0021-8979(99)01607-2].

引用

页码：3919 / 3921

页数：3

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