Chapter 29 Success! (Please follow up)
The first snow in 2002 may come later than usual. But the first snow in 2003 was not late.
The gate building of Tsinghua Garden was originally white, blending with the surrounding snow, like a quiet picture under the swirling snow. Under the plaque of "Shui Mu Tsing Hua", the red walls and black tiles are dotted with traces of white snow, full of ink-like elegance.
In class, the professor began to talk at length again, talking about some extra-curricular content that was not in the textbook.
Zhang Wei listened hard for more than ten minutes, but he still couldn't keep up with the rhythm.
"Forget it, stop learning, destroy it!" Zhang Wei sat down on the stool.
At this time, Zhang Wei has completely given up on the plan of "study hard and make progress every day". As long as he does not fail the class at the end of the semester, he will have achieved his learning goals.
Study discussion group? Don’t go, don’t go!
After-school student clubs? No me, no me!
Department group activities? Please ask for leave!
I still have to focus on the project of extracting graphene. If I get the graphene out one day early and publish the paper, everything will be fine!
……
In the laboratory of the Department of Physics of Tsinghua University, Chen Mingzheng was wearing a white coat, a mask and goggles, operating a very sophisticated experimental machine.
Behind Chen Ming, Professor Fang, who had gray temples, was looking at his proud disciple with pride and said at the same time;
"Chen Ming's hands were born to do experiments. Yes! Look at how stable the operation is, even a doctoral student who has practiced for three to five years is not as good as him.”
Next to him, another old man nodded with deep approval: "Seeing is better than hearing. I heard that you have found a genius. I didn't believe it at first, but now I'm convinced! It's him, please. It will take me two weeks!”
“No, I still have a lot of experiments to do, and without explanation, the progress will be delayed!” Professor Fang said.
“Didn’t you promise me before that you would lend me someone to use? Why did you regret it?”
“This is not regretting it. I said before that I would lend it to you, but you can’t. Didn’t you think that he was autistic and didn’t want it?”
“I didn’t want it for the time being. The latest polishing machine hadn’t arrived yet!” Use it!”
The other party paused for a moment, then continued with a scoundrel look on his face: "Anyway, all my people are here, you can't let me go back empty-handed! Otherwise I will stay here today!"
"Okay, Lao Wu, You can take the person away, but let’s talk about it first, and you, the School of Materials Science, can’t bully him!” Professor Fang said.
Professor Wu suddenly beamed with joy: "Lao Fang, don't worry! I expect him to help me cut graphite sheets, how can I bully him! If I invite him back to the School of Materials, he will be treated as an ancestor! ”
Professor Wu brought the autistic man back to the School of Materials Science.
"Chen Ming, you will come to my place temporarily in the next two weeks. The conditions here are much better than those in your physics department. There are not only laboratories but also lounges here!
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Right over there, there is a TV, various newspapers and magazines, and a ping-pong table. Next to the lounge is the tea room, where you can eat all kinds of snacks for free. What do you want to eat? I'll get it for you? "Professor Wu said with an attentive look.
"Instant noodles, white elephants and big bones. "The autistic man said.
"Well, it doesn't seem to exist. "
Professor Wu smiled awkwardly. The cafeteria of Qingda University is so rich, even dogs won't eat instant noodles!
"Why don't you have something to drink first? We have more than a dozen people here. Grow a drink! Coke, Sprite, Fanta, 7-Up, Pulse, Red Bull, yogurt, coffee, what do you want to drink? "Professor Wu then asked.
"I want to drink beer." The autistic person raised another problem.
"Uh, there's no such thing..."
Which laboratory would have such a thing as beer? Professor Wu complained in his heart.
"So poor!" Two words came out of the autistic man's mouth.
Professor Wu was choked and suddenly had a black line on his face. "Forget it, I'll take you to visit the laboratory first!" Professor Wu led the autistic man into the laboratory of the School of Materials.
“This is the polishing machine just introduced by our School of Materials. This machine is currently the most advanced in the world, and its processing accuracy has reached the micron level!”
Professor Wu said , took out another thin piece of graphite, and continued: "Your task is to polish this thing as thin as possible, the thinner the better!"
Autism The man didn't answer, but nodded directly.
The autistic person's indifferent reaction made Professor Wu feel like he was perfunctory.
"This won't work. You have to give him a beating. If he is so casual, he won't be serious when doing experiments!"
So Professor Wu said: "Chen Ming, you must do this experiment. Let’s take it seriously. Not to mention the fact that we spent a lot of money to introduce the world’s most advanced polishing machine. Do you know how valuable this thing is for this thing alone? ?”
“Highly directional pyrolytic graphite! Retail price is one yuan, and wholesale is discounted.” The autistic man repeated Zhang Wei’s original words like a machine.
Professor Wu was suddenly speechless and could not continue.
Wait a minute, it’s only one yuan a piece, and there’s a wholesale discount? Why is the one I bought so many times more expensive than this? My XXX! The buyer got a kickback!
...
Zhang Wei is not the only one who wants to extract graphene. Scientists all over the world want to extract graphene, including the School of Materials Science and Technology of Tsinghua University.
In the past few years, scientists tried to use chemical methods, but no one succeeded, so many scientists returned to traditional methods.
The first is the cutting method. This method is impossible even if you think about it. Graphene is essentially a layer of atoms. How can you cut out a layer of atoms? Going to open Lanzhou Ramen will definitely make more money than doing experiments!
In addition to cutting, another method is grinding. Since I can't cut out a layer of atoms, I will grind it little by little. In theory, I can grind it to a thickness of one layer of atoms.
This was also the method most used by scientists at that time, and the premise of this method was that it required a high-precision polishing machine and a top-notch operator.
The minimum standard for this operator is the micro-operation of a level nine fitter.
According to data, in 2004, some laboratories have polished the thickness of graphite to 1 micron, but a 1 micron graphite sheet still has more than a thousand layers of graphene, which is still early for success. Very.
......
In the rental house, Zhang Wei placed a sample under the electron microscope, and then looked at the display screen.
"Light brown! This piece shows light brown!"
Zhang Wei felt his heartbeat begin to accelerate. He shook his right hand hard with his left hand to stop his hands from shaking, and then carefully placed the sample Enter the spectrometer.
The spectral lines slowly appeared on the computer screen, and the spectral structure of this sample was also displayed in front of Zhang Wei.
One of the perfect single Lorenz peak shapes fell into Zhang Wei’s eyes.
Zhang Wei rubbed his eyes and saw that he was right. It was indeed a single Lorentz peak type spectral curve.
"I succeeded! This is graphene!"
Thank you Chow Yun-fat for your support! The number of words is still relatively small, and if you feel that it is not satisfying, you can read "The All-Around Athlete" written by Guan before. It is a fast-paced pretense, with no connotation, and it is just a fun read. I’ve put the link to the book in the recommended book section below. Click it to read it directly. If not, just upgrade to the latest version of Qidian APP to see it.
(End of this chapter)