Measurement of Young’s modulus of carbon nanotubes by nanoprobe manipulation in a transmission electron microscope
Measurement of Young’s modulus of carbon nanotubes by nanoprobe manipulation in a transmission electron microscope
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DOI：
10.1063/1.2195010
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发表时间：
2006-04
影响因子：
4
通讯作者：
Kazuki Enomoto;Shintaro Kitakata;T. Yasuhara;N. Ohtake;T. Kuzumaki;Y. Mitsuda
中科院分区：
文献类型：
--
作者：
Kazuki Enomoto;Shintaro Kitakata;T. Yasuhara;N. Ohtake;T. Kuzumaki;Y. Mitsuda
使用安装在透射电子显微镜中的纳米探针操纵器开发了一种量化纳米材料纳米力学的方法。使用这种方法测量了各种碳纳米管（CNT）的表观杨氏模量。电弧生长碳纳米管的表观杨氏模量约为3.3TPa，接近于分子动力学模拟的单壁碳纳米管的理论杨氏模量（5.5TPa）。使用拉曼光谱分析得出的结晶度参数 ID∕IG 证明了表观杨氏模量与 CNT 结晶度之间的关系。表观杨氏模量越高，CNT 的结晶度越好。
A method for quantifying the nanomechanics of nanomaterials was developed using a nanoprobe manipulator fitted into a transmission electron microscope. Apparent Young’s moduli of various carbon nanotubes (CNTs) were measured using this method. The apparent Young’s modulus of an arc-grown CNT is as large as approximately 3.3TPa, which is close to the theoretical Young’s modulus (5.5TPa) of the single-walled CNT simulated using molecular dynamics. The relationship between the apparent Young’s modulus and the crystallinity of CNTs is demonstrated using the crystallinity parameter ID∕IG derived by Raman spectroscopic analysis. The apparent Young’s modulus is higher for better crystallinity of CNT.