The separation of graphene was a world-class problem. It was precisely because of this that scientists from all over the world were constantly trying, but the results they got were constant failures.
He had thought that Cao Yi was already very impressive for separating graphene, but who knew that he had four separation methods!
"But your research report only records the mechanical stripping method!”Yuan Jianguo said in disbelief.
"My research report mainly focuses on the application of graphene and the analysis of its characteristics. After all, I don't need too many raw materials to test its properties.”Cao Yi replied calmly," However, if you want to use it, you will definitely need a large-scale separation. Therefore, I have tried three other methods. If you want to know, I can tell you in simple terms!”
"I want to know, of course I want to know!”Yuan Jianguo did not look like a pedant at all. His old face was flushed with excitement, and his old eyes were filled with curiosity!
Nie Zhonghua did not say anything. Instead, he took out his notebook and planned to record it down…
"It's better not to record this. If it gets out, it'll be very difficult to keep the technology confidential!”Cao Yi reminded him.
"Yes, yes, yes. Tell me, I don't remember!”
Cao Yi nodded and extended a finger." The first method, as you know, is the micromechanical stripping method. The advantages of this method are low cost and few defects in graphene. The disadvantage was that the graphene size was very small and could not be prepared on a large scale. Of course, the entire process was also very complicated and boring. It was only suitable for scientific research!”
The two of them nodded at the same time.
Cao Yi stretched out his second finger again." The second method is the oxidoreduction method. First, the graphene is oxided to increase the distance between the layers. Then, it is separated by ultrasound, and then it is reduced to remove the oxygen functional groups on the surface to obtain graphene…The advantage of this method is that the cost of raw materials is low, but the disadvantage is that the prepared graphene has many defects and poor performance…This should be the best method for production.”
Yuan Jianguo was stunned. Leg." This works? Why didn't I think of it at that time!"
"Yes, this method can indeed be mass-produced, but the performance of graphene…The specific values still need further testing!”
Cao Yi smiled faintly." I've already tested it. It's about 70% of the micromechanical stripping method. It's not too bad, but it's not too good either.”
Yuan Jianguo gave her a thumbs up." Teacher Cao is indeed amazing. What about the third type?”
"The third method has a higher requirement. I call it the SiC epitaxial-growth method!”
"The so-called extension method is a method of growing another type of crystal on a crystal structure through lattice matching. Compared to other preparation methods, the epitaxia method was the most likely method to obtain large-area, high-quality graphene. The graphene obtained had good smoothness and good compatibility with current integrated circuit technology. Depending on the selected base material, the epitaxial-growth method includes the carborgon epitaxial-growth method and the metal-catalyze epitaxial-growth method.”
When it came to his field of expertise, Cao Yi showed absolute professionalism.
One professional term after another came out of his mouth, but his expression was indifferent, as if this preparation method was ordinary to him.
However, Yuan Jianguo and Nie Zhonghua were extremely shocked!
If any of these three production methods were announced to the world, it would be an achievement comparable to the Nobel Prize in Physics!
Moreover, it was obvious that he had successfully extracted them before…
Now, Yuan Jianguo knew why Cao Yi wanted 200 million yuan. After all, scientific research was very costly.
Take the number one mobile phone company in the country, Huawei, for example. They invest tens of billions in scientific research every year!
Nie Zhonghua subconsciously applauded." Teacher Cao is really awesome. As expected, ability has nothing to do with age!”
Cao Yi smiled faintly without any arrogance." Actually, the epitaxial-growth methods include the silicon dioxide epitaxial-growth method and the metal-catalyze epitaxial-growth method. The differences are not big, so I won't talk about them separately!”
Yuan Jianguo and Nie Zhonghua looked at each other and saw the shock in each other's eyes.
What was in this young man's head? Why was it so terrifying?
Of course, they didn't know that these separation methods were actually rewards from the system…
In fact, he was using the simplest micromechanical separation method. It was simple and primitive, but it was enough to meet his experimental needs.
Cao Yi took a sip of water and said unhurriedly," Actually, compared to the second method, the fourth method is the most convenient for large-scale production. According to the current conditions of many chemical plants, it can be carried out. It's a chemical vapor phase!"
" I won't go into detail about the chemical vapor phase plating technology. It's a process that uses gaseous substances to produce chemical reactions and transport reactions on solid materials to produce solid deposits. There are a total of three steps. I have a separate report on this. If you need it, you can come back to school with me. I'll give it to you. Of course, the advantage of this method is that the graphene size is very large and can be mass produced. However, the disadvantage is that most of the products are multicrystal…"
Nie Zhonghua and Yuan Jianguo nodded at the same time, like students listening attentively.
Cao Yi found it funny and smiled." The rest of the methods can only be explored by everyone. I think the four methods mentioned above should be the simplest and can be used in production in the future. Especially the fourth method. The requirements are not high, and it can meet the needs of the market!”
Nie Zhonghua and Yuan Jianguo stood up at the same time. Yuan Jianguo, in particular, was in tears!
"Teacher Cao, I thank you on behalf of the Chinese people! One had to know that once this technology was released, it would drive the economic development of the entire country. This was a blessing for the people of China!”Yuan Jianguo said with a touched expression.
"There's nothing to thank me. Isn't improving the lives of the people and improving the overall national strength the ultimate goal of our scientific researchers?”Cao Yi was very calm as he spoke indifferently.
He liked the feeling of exploring knowledge, just like how players liked to fight monsters to level up.
This unknown science was his wild monsters!
Destroy them and become the world's strongest scientist…
As for the discussions in the outside world, Cao Yi did not care at all.
Those were just floating clouds.
This book is provided by FunNovel Novel Book | Fan Fiction Novel [Beautiful Free Novel Book]