Download Characterization of Carbon Nanotube Based Composites under by Moones Rahmandoust, Majid R. Ayatollahi PDF

By Moones Rahmandoust, Majid R. Ayatollahi

This quantity provides the characterization equipment concerned with carbon nanotubes and carbon nanotube-based composites, with a extra distinctive examine computational mechanics techniques, particularly the finite aspect technique. detailed emphasis is put on reviews that ponder the level to which imperfections within the constitution of the nanomaterials have an effect on their mechanical houses. those defects might contain random distribution of fibers within the composite constitution, in addition to atom vacancies, perturbation and doping within the constitution of person carbon nanotubes.

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Extra info for Characterization of Carbon Nanotube Based Composites under Consideration of Defects

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Therefore, they are expected to contribute in many outstanding 26 2 Carbon Nanotubes applications in the world of science and industry. Nonetheless, there are several types of imperfections in the structure of carbon nanotubes, which may occur during the process of manufacturing or purposely introduced to the structure for specific applications, making functionalized carbon nanotubes. Defects are an inevitable part of all devices. Although in the macro world, the existence of minor defect does not influence the functionality of devices extensively, in the world of nano, even minor defects can alter the basic properties of the device significantly.

2003). The studies on the density of state in these hetrojunctions show that at the region of welding the one-dimensional characteristics of the tube are dramatically affected, which is an important factor in electronic device applications and controlled fabrication of nanotube-based molecular junctions and network architectures that are expected to exhibit exciting electronic and mechanical properties (Kaw 2006). 14 Welded carbon nanotubes with a X-, b Y-, and c T-geometries (adapted from Terrones et al.

On the other hand, as a result of their small size, carbon nanotubes can make acceptable resonators in signal processing systems as well. The resonant frequency enhances as the size of the resonator decreases and higher resonance frequency is equal to higher sensibility (Santos 1999). 2 Electrical Properties The electrical properties of carbon nanotubes were in fact among those first interesting points found about these spectacular structures by scientists. Compared to conventional silicon-based electronics, carbon based nanoelectronics promise greater flexibility and advantages conferred by miniaturization (McEuen 1998).

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