Although graphene has extraordinary properties, it is not perfect. However, it is a very good sample that can be used to transform a perfect material with new properties. According to a recent report by the Physicist Organization Network, a team of international scientists from the United States, Canada, France and the Czech Republic has identified the main criteria required for artificial graphene in a new study, providing a basis for the synthesis of this material in experiments. guide. The research results were published in the latest issue of the Journal of New Physics.
Wibourney of the University of Buffalo, New York, added that artificially making graphene in future experiments will be challenging but feasible. We have not seen any major obstacles preventing the manufacture of graphene, but it is technically tricky, such as finding suitable materials for a certain number of parameters, including carrier density, modulation potential strength, and lattice constant. Our job is to solve the problem systematically and compare the quantitative experimental results with theoretically clear standards.
Artificial graphite has certain advantages over natural graphite, for example, its crystal structure can be varied. As the researchers explained, the crystal structure of natural graphene is fixed, including a perfect honeycomb lattice with a carbon to carbon distance of 0.142 nm. In contrast, by means of electron beam lithography, artificial graphene can be formed into a semiconductor multi-molecular layer instead of having only one precise lattice form or one lattice constant.
The researchers said that the next step is to create artificial graphene in a viable way in the laboratory to further reduce the lattice constant (periodicity of application potential) to tens of nanometers. In order to achieve this goal, they intend to use higher resolution electron beam lithography or focused ion beam technology, and hope that the extensive experimental techniques (infrared / Hertz, visible spectroscopy or electron transport) can provide Di Evidence from Lak Fermi.
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