Multiplication of electrons in the wall of multi-walled carbon nanotubes (CNTs) based on nano-microelectronics PHD (educational-research doctorate)
Researcher and author PhD student: Afshin Rashid
Tip: Multi-layer CNTs nanotubes present themselves as an ideal material for use in nano-electronic devices for a variety of reasons. Their walls , as their oscillators, due to their size and mechanical strength, must have very high resonant frequencies (in gigahertz) and very high quality factors.
The structure of the complete atomic vacuum layer shows complete multi-walled carbon nanotubes that can be used as linear and rotary bearings. Their flexibility from large, unbroken angles shows that they can also be used for mechanical switches and as hinges. We have developed nanoscale devices that aim to use the complete graphical structure of carbon nanotubes. In the electronic guidance of CNTs multilayer nanotubes, the inner core slides independently of the outer walls. The walls show non-abrasive movement, and due to the interaction of electrons in thewallsbetween the nanotube shells, the inner core automatically shrinks.
The strength of carbon-carbon bonds gives carbon nanotubes amazing electronic properties. No previous material has shown a combination of super-mechanical, thermal and electronic properties attributed to them . However, their power is what separates them. Multi-layered carbon nanotubes are the most powerful electronics ever discovered by humans. The highest tensile strength or strain strain for a carbon nanotube was up to 63 GPa, which is about 50 times greater than the strongest conductors. Even the weakest types of multi-layered carbon nanotubes have the power to multiply electronically. These properties, along with the lightness of carbon nanotubes, give them great potential in applications such as aerospace. The electronic properties of carbon nanotube walls are also excellent. It has a high electrical conductivity (comparable to copper). It is especially noteworthy that nanotubes can be metal or semiconductor. The rolling operation breaks the symmetry of the flat system and imposes a certain direction according to the hexagonal network and the axial direction. Depending on the relationship of this axial direction and the single vectors that describe the hexagonal lattice, nanotubes may behave electrically such as metal or semiconductor , some nanotubes have higher conductivity than copper, while some Others are more like silicon, and have the ability to make nanotechnology electronics from CNTs.
Conclusion:
CNTs are introduced as an ideal material for use in nanoelectronic devices for various reasons. Their walls , as their oscillators, due to their size and mechanical strength, must have very high resonant frequencies (in gigahertz) and very high quality factors.
Author: PhD Student ( Afshin Rashid)
PhD student in Nano-Microelectronics at Islamic Azad University, Science and Research Branch, Tehran