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Multiwalled Carbon Nanotubes In Advancement Of Nanotechnology
Posted: Aug 07, 2015
Multiwalled carbon nanotubes are the stripes of graphite which are rolled into tube shapes. Here the tubes are arranged in a hexagonal shape, just similar to the arrangement in the graphite sheet.
The electronic properties of the multiwalled CNTs are determined by its diameter and performance. They have good metallic as well as semiconductor properties. They play a vital role in the field of nanotechnology. Their excellent electronic properties make it good building blocks in the field of nanoelectronics.
The presence of strong mechanical properties as well as high thermal stability of the multiwalled carbon nanotubes makes it suitable for increasing the properties of the matrix materials like ceramics or polymers. On the other hand, they are also used as alternative to fillers to facilitate the electrostatic dissipation for increasing the conductivity of the polymers.
Multiwalled CNTs comprise of multiple rolled grapheme layers. They have not been well defined because of their variety and their structural complexity. There are plenty of benefits of multi-use multiwalled CNT when compared with single walled CNT like lower cost of production, ease of production, increased thermal and chemical stability.
Mechanical and electrical properties of the single walled CNT can be changed due to the structural defects during the chemical changes. However, the intrinsic properties of the multiwalled CNT can be easily preserved with the help of surface modification of the nanotubes, the outer walls of the nanotubes are exposed to the chemical modifiers.
As mentioned earlier, the features of multiwalled CNT can be determined by their atomic structure. Still, there are certain major hurdles which need to be overcome in the field. There are a number of applications wherein multiwalled CNT network are used instead of single nanotubes.
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