Physical properties of multiwalled carbon nanotubes |
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| Affiliation: | 1. Department of Physics, Meijo University, Tempaku-ku, Nagoya 468-8502, Japan;2. Department of Electrical and Electronic Engineering, Meijo University, Tempaku-ku, Nagoya 408-8502, Japan;3. CSE, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan;1. College of Materials Science and Engineering, Hebei University of Engineering, Handan, Hebei, 056038, PR China;2. Department of Applied Chemistry, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China;1. Foundation for Research and Technology Hellas – Institute of Chemical Engineering Sciences (FORTH-ICE/HT), P.O. Box 1414, GR-26504 Rio-Patras, Greece;2. Nanothinx S.A., Stadiou Street, Platani, GR-26504 Rio-Patras, Greece;1. Plasticity Control and Mechanical Modeling Laboratory, School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea;2. School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea;1. Institute for Machine Elements and System Engineering (MSE), RWTH, Aachen, Germany;2. School of Chemical & Materials Engineering (SCME), NUST, Islamabad, Pakistan;3. Institut für Produkt-Innovationen IPI, Solingen, University of Wuppertal, Germany |
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| Abstract: | Multiwalled carbon nanotubes (MWNTs), which were prepared by hydrogen arc discharge, were purified by using an infrared radiation heating system. The morphology, structure, vibrational modes and crystalline perfection of purified MWNTs were investigated by using scanning electron microscopy, high-resolution transmission electron microscopy, an X-ray diffractometer and a Raman spectrometer. Moreover, the electrical conductivity of individual purified MWNTs was measured using a two-probe method using a micro manipulator system. It turned out that the MWNTs had a high degree of graphitization, an electrical conductivity of about 1.85×103 S cm−1 along the long axis, and an enormous current density of more than 107 A cm−2. |
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