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Inter-collisional cutting of multi-walled carbon nanotubes by high-speed agitation |
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| Authors: | Ki Chul Park Masatsugu Fujishige Susumu Arai Morinobu Endo |
| Institution: | a Department of Electrical and Electronic Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan b Department of Chemistry and Material Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan c Nagano Techno Foundation, 1-18-1 Wakasato, Nagano 380-0928, Japan d Institute of Carbon Science and Technology (ICST), Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan |
| Abstract: | High-speed agitation by a mixing blade has efficiently achieved the cutting of a large diameter (100-150 nm) of multi-walled carbon nanotubes. The cutting process is caused by an inter-collision of the nanotubes with high transfer energy. The collision-induced cutting allows for the shortening of the nanotubes without serious damage of the original graphitic layers due to the cutting effect being limited to the collision points. Furthermore, the operation under ambient atmosphere introduces oxygen-containing functional groups to the cut nanotubes. The estimated length distribution has indicated that high-speed agitation achieves a large cutting effect during a short duration of several minutes. |
| Keywords: | A Nanostructures C Electron microscopy D Microstructure |
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