A method to evaluate the tensile strength and stress-strain relationship of carbon nanofibers, carbon nanotubes, and C-chains

被引：15

作者：

Márquez-Lucero, A

Gomez, JA

Caudillo, R

Miki-Yoshida, M

José-Yacaman, M

机构：

[1] Univ Texas, Texas Mat Inst, Austin, TX 78712 USA

[2] Univ Texas, Dept Chem Engn, Austin, TX 78712 USA

[3] Ctr Invest Mat Avanzados, Complejo Ind Chihuahua, Chihuahua 31109, Mexico

来源：

SMALL | 2005年 / 1卷 / 06期

关键词：

carbon nanotubes; chain structures; nanofibers; simulations; tensile strength;

D O I：

10.1002/smll.200400115

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A method is introduced to assess the tensile strength of carbon nanofibers, carbon nanotubes (CNTs), and linear chains of carbon atoms (C-chains) obtained from thin amorphous carbon films by electron irradiation. Transmission electron microscopy images show that the nanofibers undergo a radiation-induced necking process, characterized by CNT formation and often followed by the formation of a C-chain. Simulations of the necking process are carried out to determine the tensile stress supported by the nanofiber and CNT neck.

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收藏

页码：640 / 644

页数：5

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