Mechanical and physical properties on carbon nanotube Original Research Article

The aligned and very long carbon nanotubes were prepared by chemical vapor deposition (CVD) of hydrocarbon gas on various substrates. Aligned and isolated carbon nanotubes with high density, high purity and uniform diameters were achieved. Mechanical and physical property characterizations, such as tensile strength, Youngʹs modulus, thermal conductivity and third-order optical nonlinearity, were carried out on the aligned and long tubes. The results were discussed with the microstructure of the carbon nanotubes.