Multi Walled Carbon Nanotubes: The New Hope In Field Of Robotics And Medicine

It is well established today that the carbon nanotubes have remarkable physical and chemical properties. Considerable progress has been made in their synthesis, to the point that some large industrial groups chemistry considering their mass production. However, the exploitation of their properties on a macroscopic scale remains a technological barrier for some yet they have very compelling applications.

Carbon nanotubes, discovered in 1991 continue to surprise and amaze by their mechanical and electrical properties. These are perfect conductors which make perfect electrical interconnections and very intense electron sources for TVs. For their mechanical properties, we can make ropes whose robustness will have equaled lightness. Finally the surface, they act as an exceptional hydrophobic coating.

Characteristics of multi walled carbon nanotubes

An all-carbon structure is biocompatible. Therefore multi walled carbon nanotubes can be used as nano-sensor for detecting biological objects by monitoring a property of easily observable nanotube. Moreover, their hollow structure allows considering their use as drug carriers. Finally, grafting to the surface of the ATD structures can be envisaged as artificial molecular motors. Such motors may be integrated into artificial respirators or other devices curing of functional impairment.

Among them, the materials with high mechanical performance, the micro-sensors for biological applications or electromechanical actuators for robotics and medical applications. After synthesis, the nanotubes occur most often in the form of light and disorganized soot, directly unusable.

According to the intended applications, the nanotubes must be dispersed in a matrix, assembled or oriented to exploit a given property. Multi walled carbon nanotubes are synthesized by using conventional concepts of complex fluids chemistry to optimize dispersions and carbon nanotube assemblies. Particularly, a simple method for spinning of carbon nanotubes for manufacturing continuously macroscopic structures of oriented nanotubes is available. The mechanical, electromechanical and electrochemical properties of nanotube fibers offer a promising layout for efficient exploitation of the properties of carbon nanotubes.

A carbon nanotube of multiple walls is a tubular object of nano-metric size in diameter and length micrometer. It consists of a sheet of graphite rolled up on itself to form a cylinder closed at both ends by two half-fullerenes. Since then, various specific synthesis methods have been developed and enabled the laboratory study of the structure and the physical and chemical properties of these objects.

This research has made tremendous growth and is spectacular as both the structure of this object and its properties in different areas range from mechanics to nanochemistry through nanoelectronics and advanced effects in an electric field. The development will aim to present the current state of research on nanotubes and challenges for future developments. It will be structured as follows.

Different methods for synthesis of carbon nanotube

There are different methods for synthesis of nanotubes and the models that are currently proposed to explain the mechanisms of formation of these objects in order to discuss the problem of a synthesis device on controlled large scale, is an issue for future application development and use of the nano-tube as a nanomaterial. There are extraordinary properties of these objects in order to show the unique interest that these objects also look good for basic science for the applications, concerning the development of potential applications.

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