I thought I was still Long Aotian

According to the records of earth civilization, graphene was developed by two British scientists in 2004. By peeling off graphite flakes from highly oriented pyrolytic graphite, and then sticking both sides of the flakes on the tape, after tearing off the tape, the graphite flakes were divided into two parts. For two purposes, they repeated this process over and over again, and finally got a thin sheet of carbon atoms, which is graphene.

Yuen Long said: "Graphene is a two-dimensional carbon nanomaterial. The preparation methods mainly include physical methods and chemical methods. These two methods have their own advantages and disadvantages. The physical methods mainly include mechanical exfoliation, liquid phase exfoliation, Direct growth method, etc., the prepared graphene introduces less impurities, will not destroy the carbon six-membered ring structure, and the obtained graphene is of high quality, but most of the sheet diameters are less than 5 microns. The chemical method of preparing graphene mainly includes graphite oxide ene reduction method, organic synthesis method, solvothermal synthesis method, etc. Especially the graphene oxide reduction method, the main mechanism is obtained by strong oxidation of high-purity flake graphite, but the graphene lattice is broken due to the action of strong oxidant during the oxidation process , resulting in different sheet diameters in the graphene oxide solution, and the graphene after reduction is very different.” Note

Yuen Long briefly talked with several professors.

Some professors' eyes lit up after hearing this, while others shook their heads and said it was impossible.

The professor of chemistry and chemical engineering patted the table and said, "As far as the chemical vapor deposition method you mentioned just now is feasible, but the requirements are very high, and the current laboratory cannot do it at all!"

The professor of physics and mechanics pushed his eyes and said excitedly: "I really want to try micromechanical stripping. If you wait a little longer, I'll ask someone to prepare the experimental materials."

Then, the professors who wanted to turn around and leave after hearing about Yuen Long’s background all stayed behind. This one pulled Yuen Long to ask if this kind of technology already existed abroad, and the other asked Yuen Long to ask him to change it again. Introduce the separation technology of graphene in detail.

After tossing and tossing, it was past school time, and Yuen Long hadn't left the principal's office yet.

Mr. Yuan even called to ask questions. After hearing the headmaster give his grandson a good beating, Mr. Yuan put down the phone and asked grandma in doubt, "Is he really talking about our grandson?"

The old lady rolled her eyes at the old man, "People say your grandson is good, but you are not happy, you old man, really!"

The time turned to 8pm, Yuen Long was hungry and wanted to go home, the professor of physics and mechanics insisted on pulling Yuen Long back to his home, "Hey Yuen Long, let me tell you, you come to my house to eat tonight, you Master's wife's skill is excellent, you say you want to eat sweet or salty, or hot and sour."

The professor of the School of Astronautics laughed and scolded: "Old Zhang, if you don't take someone like you, his child hasn't been chosen yet, so you just want to be his teacher?"

The professor of the School of Materials also followed suit: "Yes, Lao Zhang, he graduated from MIIT and came to our school as a postdoctoral fellow. You really take advantage of others!"

Several old men coaxed together, making the professor of physics and mechanics blush. He straightened his neck and asked Yuen Long: "Boy, which direction do you want to study? Let me tell you, I have a national project in my hand, and I can produce results." gone."

Other professors also reported their current research topics one after another, and said that if Yuen Long can complete the project independently, he will only sign the name of Yuen Long.

Yuen Long said, "I want to learn about semiconductor microelectronics."

"What!" Professor Zhang of Physics and Mechanics roared, staring, "What does that thing have to do with the material science you studied?"

Yuen Long raised his eyebrows: "Professor, what in this world has nothing to do with materials science?"

Professor Zhang was confused by his anger.

The professor of the School of Astronautics frowned: "Have you made up your mind?"

Yuen Long nodded: "Yes, the future society is inseparable from electronic devices, such as touch-screen mobile phones, artificial intelligence, etc."

The professor of the School of Astronautics came to a sudden: "It turns out that artificial intelligence is your direction." He patted Yuen Long on the shoulder encouragingly and said, "Okay, you work hard!" However, he still muttered unwillingly: "It's cheap!"

Yuen Long was puzzled.

The principal smiled and explained: "Liu Datou is the dean of the School of Mechanical and Electrical Engineering. His full name is Liu Jianguo. He is preparing to receive the J-country academic exchange seminar, so he didn't come today."

Yuen Long was very interested in this and asked, "Principal, may I ask what this seminar is about?"

The principal thought for a while: "It seems to be mechatronic engineering. Specifically, it seems to be programming a machine."

Yuen Long thought to himself, it just so happens that this is what he is best at, but the ancient programming in this world, he needs to go back to preview and attend the seminar, and he should be able to master it by now.

So, he said: "Principal, am I lucky enough to attend?"

The principal responded immediately: "Yes, of course, it will start at three o'clock in the afternoon the day after tomorrow."

Yuen Long: "Okay, I will definitely be there, thank you principal. I have nothing to do, I will go back first, goodbye professors."

The principal wanted to keep him for dinner, but Yuen Long rejected the principal's offer because he wanted to go home and eat his mother's cooking.

When he walked outside the gate of the campus, his family's driver was already waiting there. When they got home, Ms. Shen Chunya had already brought hot meals to the table.

Yuen Long loves this feeling so much.

In the past, although he was qualified to enjoy natural food, it was cooked by robots. The taste could not be said to be unpalatable, but it could not be called delicious either.

The main reason is that the robot will cook according to the program settings to preserve the maximum nutritional value of the food. The food is half-baked and has a very bad taste. How can it be as delicious as Ms. Shen Chunya's cooking!

"I'm back, go wash your hands." Ms. Shen Chunya had severe wrinkles at the end of her eyes, but her smile was really beautiful.

"Okay, thank you mom." Yuen Long couldn't help but stepped forward to hug her.

"Hey, you child!" But she cried suddenly.

"Mom, what's wrong with you?" Yuen Long was taken aback.

"It's okay, mom is just happy." She cried and laughed, but she could see that she was very happy at this time.

After Yuen Long went to wash his hands, Ms. Shen Chunya hurriedly took out her mobile phone and sent a message to her husband, "Xiao Lang just hugged me, just like he did when he was a child."

Yuan Bolin quickly replied: "Such a big man, why is he still being hugged by his mother? He has grown back to breastfeed!"

Ms. Shen Chunya got angry immediately, and replied: "Yuan Bolin, you are jealous, naked jealousy!"

Yuan Bolin: "Why is I jealous of him, my daughter-in-law, I can hug him as much as I want."

Shen Chunya didn't know whether to laugh or cry: "Comrade Yuan Bolin, don't talk to me all the time, do you think you are a bandit?"

When Yuen Long came out after washing his hands, he saw that Ms. Shen Chunya was playing with her mobile phone with her head down, looking like a little girl, and there was a touch of sweetness in her smile.

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