Controlling the site density of multiwall carbon nanotubes via growth conditions

被引：12

作者：

Siegal, MP ^{[1
]}

Overmyer, DL ^{[1
]}

Kaatz, FH ^{[1
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 25期

关键词：

D O I：

10.1063/1.1765741

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present two complementary methods for controlling the site density of multiwall carbon nanotubes (CNTs) directly as a function of growth conditions from 10(11) to 10(7) CNTs/cm(2). Several potential applications require significant spacing between individual CNTs. The first method shows that the site density varies with the heat of formation of the hydrocarbon gas used during CNT growth by thermal chemical vapor deposition. The second method demonstrates that the site density decreases with increasing residual stress of the metal catalyst/diffusion barrier layers. These methods are combined for wide-range control of CNT site density. (C) 2004 American Institute of Physics.

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页码：5156 / 5158

页数：3

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