When everyone heard this, they turned their attention to Li Chuan. Compared with the energy ring in their hands, the academicians paid more attention to the essence of this science. Li Chuan nodded happily with a smile: "The heterostructure that reverses the core record is vertically stacked by binary construction units. Based on the rich functionality of graphene two-dimensional materials, more engineering manipulation can be achieved. Its appearance is to control the electronic structure of heterojunction by controlling the interlayer distortion angle. When I was studying graphene, I discovered new electronic states in the bilayer graphene with magic angle distorted, which can simply realize the transformation from insulator to superconductor, which has opened the door to research graphene in unconventional superconductors."
"It's so incredible." Everyone was amazed, especially Academician Chen, who has been involved in superconducting research for decades, this classic problem has plagued scientists in this field all over the world for decades, and never expected to get such an unexpected and simple answer.
Li Chuan continued: "During the experiment, I found that in the stacked bilayer graphene, electrical behavior is very sensitive to atomic arrangement and affects the movement of electrons between layers. We know that electrical behavior is usually dominated by energy. In this study, the energy related to the movement of electrons between atoms in a single layer graphene is on the order of eV, while the energy involved in the movement of electrons between layers reaches an astonishing thousand-level meV at most."
"I think symmetry is the key to solving this puzzle!"
Academician Chen couldn't help but nodded. For single-layer graphene with highly ordered structures, the electrical properties depend on symmetry.
Li Chuan said: "For this purpose, I prepared a double-layer graphene that reversed twists and controlled the electron states in the entire system through the interaction between electrons. The dislocation caused by the reversal makes the electron band structure in the graphene layer no longer aligned, so the single cell becomes larger."
"Later observations found that distorted bilayer graphene would produce two new electronic states. One electron state is the Mott insulator state, which comes from the strong repulsion between electrons, and the other is the superconducting state, which comes from the strong attraction between electrons and produces zero resistance."
"That is, when the rotation angle is <1.05°, the vertically stacked atomic regions in the twisted bilayer graphene will form a narrow electron band, and the electron interaction effect will increase, thereby generating a non-conductive Mott insulating state. If a small amount of charge carriers are added in the case of the Mott insulating state, it can successfully transform into a superconducting state."
The academicians present were all real masters. After a brief analysis, everyone understood it, but they couldn't resist the amazement in their hearts.
I see!
These four words are the first reaction of the academicians. Science is so magical and wonderful. When graphene was discovered, two scientists tore it out with one tape, and it was also said that it was torn out with a Nobel Prize with a tape.
When a group of academicians were forgot to discuss academic research with Li Chuan, Zheng Jiahua on the side was confused throughout the whole process.
Unclear and sharp! This is his feeling. Zheng Jiahua found that he was staying with a group of "school god-level" beings, and he could not speak at all. He could only stay aside like a wooden man and speechless.
...
In the next month, several major aircraft design institutes in China also sent a technical research team to Huasheng Technology, with the purpose of coming to demonstrate the key technical difficulties of fighter jets mentioned in Li Chuan's report - engines.
Aero engines can be said to be a major technical difficulty that has always been plagued by it, because aero engines need to operate under high temperature, high pressure and high speed rotation.
Taking the engine produced by Rawls A380 as an example, when taken off, the four engines can generate nearly 180,000 horsepower, which is equivalent to the power of thousands of ordinary family cars. The maximum internal temperature is above 1,700 degrees Celsius, which greatly exceeds the melting point of the nickel-based alloy of the engine turbine blades.
At the same time, the pressure inside the engine reached 50 atmospheres, which is equivalent to three times the pressure at the bottom of the Three Gorges Dam after filling up water. The turbine blades are like ice cubes, rotating in a high-temperature furnace, and four Mercedes-Benz cars are hung on it.
These requirements for engine blades and bearing materials meet extremely strict requirements, which is precisely the country has huge shortcomings in the field of basic materials. Although with the birth of Huasheng Technology and the birth of graphene has been unprecedentedly developed in the field of basic materials, a new technology upgrade cannot be achieved overnight.
What people never expected was that Huasheng Technology is to be precise, Lichuan has surpassed the world quietly. The N4 unit architecture, which emerged based on nanotechnology, is the strongest material known to mankind.
Aero engines made of nanomaterials made of N4 unit architecture have comprehensive performance that make major aircraft design institutes look like dreams. However, Li Chuan did not show this nanotechnology, which is very simple, because this involves related issues of Ghost International. Those artificial super soldiers and a large number of armed technologies are equipped with nanotechnology constructed by N4 units that support the core modules.
Li Chuan cannot guarantee that Ghost International will be foolproof when it is released to the public in the future. If an artificial human is captured or a fighter plane is shot down, and the relevant nanotechnology is found, it will cause a lot of unnecessary trouble.
Although the best technology cannot be produced, it is not helpless. Isn’t this a “universal” graphene material? Although it cannot be compared with nanomaterials with N4 unit architecture, it still represents the cutting-edge field of materials discipline.
除此之外,在发动机引擎推进方式上,黎川采取了纳米尖兵的助推器原理进行改进,决定以此为基点开发一套电推引擎,这样就能滴水不漏了,技术革新升级都能找到源头.
In fact, the electric thrust engine on the black armor has developed to the fourth generation and has been applied. The fifth generation engine technology is also on the upgrade schedule, so that it can truly shuttle back and forth in space and the surface.
During this period, major well-known top research institutions, research institutes and "national team" companies in China have frequently visited the Huasheng Technology headquarters to support Huasheng Technology, and the news has not escaped the media's eyes.
Especially foreign media have shown great concern about this, because they found that almost all represent the pyramid-level existence of this country in their respective science and technology fields, and all signs indicate that Huasheng Technology has made great moves.
For a moment, there were constant speculations and many different opinions.
However, the voices from the outside world did not affect Li Chuan and the others. As time went by, another month and a half passed. After a comprehensive and careful analysis and evaluation by superiors, the report submitted by Li Chuan finally received a formal reply.
Agreed!
Chapter completed!