For the first time, Russian and Japanese scientists managed to create a 2.8 nm transistor from a carbon nanotube
A group of scientists, consisting of Russian and Japanese representatives, for the first time showed the possibility of controlled production of carbon nanotubes with controlled properties.
Thanks to the use of new technology, scientists have managed to create a transistor with a channel length of only 2.8 nm. In addition, the scientists were also able to demonstrate the effect of quantum interference at room temperature. This discovery will be discussed in this article.
The problem of carbon tubes and the first technology for their controlled transformation
At its core, an ideal nanotube is nothing more than a graphene layer rolled into a cylinder. At the same time, how the graphene will be folded depends on what electrical properties the nanotube will eventually receive, and the degree of twisting is scientifically called the “chirality index”.
So the very possibility of simply changing the degree of loading of a nanotube to obtain either a metal or a semiconductor is very attractive for scientists. But during synthesis, nanotubes with both metallic and semiconducting ones can be formed in the same array. properties, and this uncertainty severely limits the industrial use of such an undoubtedly promising material.
But it seems that scientists have found a way out of this situation. So a scientific group from NUST MISIS (Russia) and the National Institute of Materials Science (Japan) found a way to which makes it easy enough to transform ready-made nanotubes and obtain the desired properties.
So Japanese specialists conducted a laboratory experiment, and Russian specialists created a theoretical description that fully described the real experiment.
Thus, scientists have obtained a method that, due to thermomechanical processing, allows the nanotubes to be modified in the way that scientists need. Scientists are working to improve the process of controlled change, but already at this stage they assume that in the future the technology will allow creating a new generation of electronics.
The scientists shared the results of the work already done on the pages of the authoritative publication Science.
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