Mechanical Properties of Double Coiled Carbon Nanotubes

Author

Chang, Neng-Kai ; Chang, Shuo-Hung

Author_Institution

Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan

Volume

1

fYear

2006

fDate

17-20 June 2006

Firstpage

270

Lastpage

273

Abstract

The mechanical response of double coiled carbon nanotubes (CNTs) was examined with an atomic force microscopy (AFM) based technique. The compression and tension measurements were carried out in the lateral force image mode. The spring constant of the coiled CNTs and the shear modulus of CNTs have been derived, respectively. We found that the spring constant of the coiled CNT suddenly decreased while the coiled CNT buckled. The shear modulus of CNTs, 3 ± 0.2 GPa, calculated from the spring constant of coiled CNTs is extremely low, compared with well-known high tensile strength of CNTs, ∼1 TPa. The results suggest that the motion of coiled CNTs is mainly relative to the behavior of the slide between the inner tubes of multi-walled CNTs (MWNTs).

Keywords

AFM; Coiled CNTs; Compression Test; Tension Test; Atomic force microscopy; Calibration; Carbon nanotubes; Force measurement; Frequency estimation; Mechanical factors; Scanning electron microscopy; Springs; Structural beams; Testing; AFM; Coiled CNTs; Compression Test; Tension Test;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2006. IEEE-NANO 2006. Sixth IEEE Conference on

Print_ISBN

1-4244-0077-5

Type

conf

DOI

10.1109/NANO.2006.247626

Filename

1717076