The person who came was Cao Junhui, the person in charge of the research institute, who came to see the situation at first, but saw such a heart-wrenching scene.

“？？？”

“？？？”

it!

Who is it?

Xu Mang and Yang Xiaoman looked at the middle-aged man standing at the door with a confused expression, and were very dissatisfied with his appearance for no reason.

"I'm Cao Junhui, the head of this institute. Cao Junhui said helplessly: "Professor Xu... Poplar... Researcher Yang, can you separate for a while? I know you're a couple, but... Isn't that right?"

Oops!

This Nima... What a shame!

When Yang Xiaoman heard Cao Junhui's words, his pretty face suddenly turned red, and he hurriedly got up from Xu Mang's thigh, and said shyly: "Director Cao... This one... It's not what you see, but Xu Mang is actually teaching me quantum mechanics. ”

“...”

Teach you quantum mechanics?

You don't need to sit on someone else's lap to teach, right?

Cao Junhui was very helpless, but because the other party was Yang Jian's daughter, he could only smile and say: "Study well, study well." ”

Words fall,

Cao Junhui walked up to Xu Mang, glanced at the monitor curiously, and asked, "Professor Xu, what are you talking about?"

"Calculate whether the Fermi velocity will change when the two layers of graphene rotate. Xu Mang said seriously: "We have almost found a way to superconductivity of graphene, but... I don't think it's going to work. ”

Got it?

No way?

This...

Cao Junhui looked at Xu Mang with a surprised face, and hurriedly asked, "Professor Xu, are you sure you found it?"

"Hmm!"

"It should have been found. Xu Mang nodded: "But don't be too happy, even if you find the superconducting properties of graphene, but theoretically, it has no effect... Just like the footbasin chicken achieves superconductivity, it only brings a change in thinking, not a change in technology. ”

Cao Junhui knew what Xu Mang meant, and it was estimated that the conditions were too harsh to achieve application, but it could change the way of research, and even change the future changes in this field.

But...

At present, Xu Mang has not completed superconductivity, so all this is still unknown.

"Professor Xu?"

"How did you achieve superconductivity?" asked Cao Junhui.

"Rotation angle. ”

"We found a paper that predicted that when two layers of graphene rotate, forming an angle would lead to new electron interactions. "We studied the paper carefully and felt that the physicist's prediction was true. ”

Words fall,

Xu Mang presented his latest research results.

"Director Cao, look!"

"Each carbon atom in the monolayer of graphene has four valence electrons, three of which are bonded to other carbon atoms by mixing hybrid orbitals of s and p-orbitals, and the remaining electrons move in the vertical orbitals of graphene. ”

"If the two layers are superimposed and the angles are twisted, a phenomenon occurs where the Dirac cone can have a hybrid effect, and an energy gap appears on the Dirac cone, so that the Fermi velocity at the Dirac point is normalized. ”

Words fall,

Xu Mang smiled awkwardly: "This is what we envisioned." ”

“...”

"How did you come up with so many associations?" asked Cao Junhui.

"Simulation by model. Xu Mang said with a smile: "Imagination is important, but it is not as direct as model simulation, we used the quantum database to simulate the model, and found that when the two layers of graphene are superimposed and rotated, there will be a magical pattern moiré, a kind of light and dark ripples." ”

"Moiré patterns are well understood, and the superposition of two identical geometric patterns will produce such a pattern, but the appearance of moiré patterns leads to a situation, that is, the expansion of cells. Xu Mang continued: "Not only that, but because of the superimposed state, the upper and lower carbon atoms are perfectly aligned to form an AA arrangement, and the upper and lower carbon atoms are staggered to form an AB or BA arrangement. ”

"So..."

"The peaks and troughs of the electron energy state density are formed. ”

Words fall,

Xu Mang opened the model diagram and pointed to the model above: "This is the model." ”

Cao Junhui looked at the model carefully, and through Xu Mang's explanation, he really found some clues, which are not theoretical data, but can be seen in reality.

Prior to that,

It seems to have come to a misunderstanding, and has been wandering in the mode of calcium atoms in bilayer graphene, resulting in no development in the research progress.

Outcome... As soon as Professor Xu Mangxu came, it seemed to open up this embarrassing situation.

Although it is all theoretical or model data, it is also an improvement.

"Any other data?" asked Cao Junhui.

“...”

"No more. Xu Mang shook his head and said helplessly: "To tell you the truth, I don't have much confidence, although there is a theoretical possibility, but... Who knows in reality. ”

Cao Junhui nodded, and after understanding its progress, he said, "Professor Xu, how long will it take to test the superconductivity of graphene? ”

"Before the lab was closed. Xu Mang said.

“...”

Cao Junhui didn't know if he was complaining, but it sounded like he was complaining, maybe he was too careful.

With

After a few more brief exchanges, Cao Junhui left the laboratory.

"Hey!"

"Are you stupid?" Yang Xiaoman glared at Xu Mang: "What do you mean before the laboratory closes? What do you make others think? You are too presumptuous, you are Professor Xu, why are you so uncontrollable?"

"Huh?"

"I... I'm telling the truth. Xu Mang said with a confused face: "It is true that the experiment can be tested before the laboratory is closed." ”

"You!"

"Big idiot!" Yang Xiaoman sighed, and said with hatred: "I can't imagine how miserable your life would be without my future, in your situation, I'm afraid you won't be beaten to death." ”

This...

What is this?

Before reasoning without you, life is simply colorful.

But since I met you, life has been miserable and tragic to death, not only to be scolded but also beaten...

At this point,

Yang Xiaoman slowly broke Xu Mang's hand, sat on his lap, lay down in his arms, and said shyly: "Hurry up... I'm your student now, Professor Xu, hurry up and get to class!"

I...

You...

Nima!

Is this crazy?

Xu Mang heard Xiao Man's words, his hair was numb, good guy... If this woman is ready to go to heaven.

"Oops!"

"What's wrong with you?" Xu Mang said with a dark face: "I deal with you, I will never recover, and I will go to prison anytime and anywhere, good guy... You're adding another three years to your sentence. ”

Yang Xiaoman pouted and said angrily, "It's not for you." ”

picked up Xiao Man and put it aside, Xu Mang said with a righteous face: "Please go away!"

Yang Xiaoman: (# ̄~ ̄#)

Idiot!

A sucker!

There is no tacit understanding between lovers at all.

...

Cao Junhui returned to the office, thought seriously for a long time, picked up the phone and called Wang Xiong.

soon

Wang Xiong came to the office and said to Cao Junhui: "Old Cao, what's the matter?"

“...”

"I went to Xu Mang just now, and I decided not to terminate the graphene project. Cao Junhui said solemnly: "Research funding will continue to increase. ”

What the?

Not only will it not be terminated, but it will also be funded?

Wang Xiong's face was confused, and he asked curiously: "Old Cao... What's your situation? Didn't this graphene project say that it was going to be terminated? Why did you suddenly decide not to terminate it now?

Halfway through the conversation,

Wang Xiong suddenly reacted and looked at Cao Junhui in horror.

"Xu..."

"Xu Mang succeeded?" Wang Xiong said in surprise.

"Nope!"

"But it's frighteningly fast. Cao Junhui said: "In terms of theory and model data, I support Xu Mang's point of view, and he is currently calculating... Anyway, we'll be able to know the outcome in the next few days. ”

So fast?

He... He's only been two days, right?

"What did he do?" Wang Xiong asked.

Xu Mang found a paper and conducted research based on it. Cao Junhui said: "It seems to change the angle of the superposition state of the double-layer graphene, how many degrees does it turn, I don't know, this is not... He's counting. ”

Wang Xiong naturally knew about Xu Mang's awesomeness, otherwise he would not have found him, but he never expected that there would be results so soon.

Double-layer graphene is superimposed on top of each other and rotated up and down at an angle to achieve superconductivity?

That's too easy, right?

"I'm afraid..."

"It wasn't as easy as we thought. Wang Xiong said: "There should be an extremely harsh additional condition, according to past experience, it must be more than minus 200 degrees Celsius to achieve superconductivity." ”

"But in any case, if we rely on changing the angle to achieve superconductivity, it will have a great effect on the field of condensed matter physics. Wang Xiong said seriously: "There may be a seismic chain reaction. ”

Cao Junhui nodded: "I will now make an announcement to cancel the plan to terminate graphene." ”

soon

Many people at the institute saw the announcement that the termination of the graphene project had been canceled for reasons that were not yet known, but it was certain that the project was alive again.

Faced with this situation,

A lot of scientific research workers are very dissatisfied, many projects are waiting for money, and the termination of graphene projects can save money and invest in other projects, as a result... Now the project is back in the works.

Be reasonable,

This project has not progressed for a long time, is it necessary to continue to carry it?

however

Some people say that it is because of the arrival of Xu Mang, which has changed the current situation, and Director Cao Junhui Cao has to sell face.

gradually

Some people became disgusted with Xu Mang.

At this point, Xu Mang and Yang Xiaoman already felt it when they were having lunch.

"Huh?"

"What's the situation?" Yang Xiaoman asked curiously, "Why do some people feel indifferent?" ”

"I don't know. Xu Mang shook his head and said indifferently: "It doesn't matter what they do, I just need to do my own thing, and they can do whatever they like." ”

"It won't be..."Yang Xiaoman lowered his voice and whispered: "You blocked other people's way?" Originally, the graphene project was going to be terminated, but the person surnamed Cao came over in the morning and saw your latest achievements, and canceled the termination when he went back... Causing someone else's project to be stuck indefinitely. ”

Not to mention,

Xu Mang felt that Xiao Man was right, as long as there are people, there will be rivers and lakes, and there will inevitably be competition.

Suddenly,

Xu Mang felt that his pressure had become so great, that he couldn't imagine what the situation would be if all his theories failed.

......

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