Chapter 494
Chapter 494
On this day,
fan Zhilong found several big men in the industry, including Wang Jiafu, a big man in theoretical physics, Hua Yanfeng in particle physics, and Professor Li Aimin, majoring in optics. He took a free opportunity and told them a story.
"Tell you one thing...
" don't be surprised! "
"Remember the fragile topological state problem we discussed earlier?" Fan Zhilong said mysteriously.
Wang Jiafu nodded and asked curiously, "isn't it that we still have a judgment on this issue? It is almost impossible to find direct evidence. After all, this is not a strong topology. It is basically impossible to calculate the topological properties of materials based on their chemical properties and symmetry. "
"Yes
"But some people don't believe in evil." Fan Zhilong said seriously: "he... I just explained more. You all know him very well. Professor Wang, you were his class director before."
"..."
"..."
"..."
"..."
don't guess,
it must be Xu mang!
The three almost point their spearheads at the same person. In the thinking of Wang Jiafu and others, only Xu mang can have the ability not to believe in evil. When the whole world is questioning, he dares to go up and hit everyone in the face.
But...
I'm afraid it will be difficult this time!
Fragile topology is one of the most difficult problems in the world. Although the team from Oxford University found the phenomenon of suspected fragile topology in Xu Mang's "magic corner" double-layer graphene, many evidences show that it is not fragile topology at all.
Fragile topology is a concept. Since its birth, it has harmed a few scientists. Gradually, this field has become cold. Until the discovery not long ago, however, the thunder and rain are small, and many of them have taken wait-and-see measures.
Only the top research schools in the world can really study the fragile topology.
"Xu mang..."
"I'm curious about how he plans to solve this headache problem in the world this time." Hua Yanfeng thought for a long time and sighed: "in fact... The problem of fragile topology, I went back to think about it for three days, but still can't find any way to prove its existence."
"Usually..."
"when everyone accepts the strong topology, the phenomenon that can be directly measured, and then look at the fragile topology, if the evidence does not reach the level of the former, it is not convincing." Hua Yanfeng said.
"Well!"
"I basically agree with that." Professor Li Aimin nodded: "we can see from last year's strong topology search that symmetry was used as judgment at that time, mirror symmetry, rotation symmetry and translation symmetry."
"The direction of symmetry determines where and how electrons move in the lattice of the crystal structure..." Professor Li continued, "symmetry can also be used to predict the behavior of electrons and to predict whether a material may have topological states."
"What should Xu mang do?"
Li Aimin asked, "how can he judge the fragile topology? Or how to determine the fragile topology? At present, the Research Institute of Oxford University has only found the suspected fragile topology phenomenon, whether it is still under debate
"I'll tell you what I think."
"Putting aside the complexity of the problem, Xu mang alone will naturally find some new concepts. This... He has completed so many impossible studies before, so I don't need to say more." "Just give him time..."
"pity..."
"do you know how much time Xu mang plans to spend this time Fan asked solemnly.
How long?
A month?
Three months?
Or about half a year?
The three professors of Physics Department of Fuda did not give a specific time. After all, if you report a time at random in front of Xu Mang, you may be beaten in the face. It is not once or twice that Xu mang slaps him in the face.
"So cautious?"
"Nothing... Just talk about the time you envision." Fan said.
"I think half a month."
"A week, I guess."
"Ten days?"
Facing this completely different answer, fan Zhilong laughed and said earnestly, "one day!"
“???”
“???”
“???”
What?
One... One day?
Are you sure there's no mistake?
"Xiao Fan!"
"You... Are you wrong about the time?" Professor Li Aimin said in disbelief, "is the time of the day... Starting today? That's not the afternoon when you know the result? "
"Yes
"According to Xu Mang's time, we can know the evidence of fragile topology before 4:30 pm." "Although I don't know whether it's true or not, according to his expression at that time, it's a bit of a joke," Fan saidmake fun of?
This...
I'm afraid it's true.
If Xu Mang's expression is very serious, it is questionable. However, Xu Mang's appearance of smirking faces needs to be noticed and taken seriously.
"One day..."
"how can this... Be possible?" Professor Li Aimin thought for a long time, shook his head and said, "I really can't think of how to find the evidence of fragile topology in one day. Did he discover it before?"
"Yes
Fan Zhilong quickly nodded his head and said, "Mr. Li, what you said is not wrong. I heard Xu mang say that it seems to be related to graphene. He discovered this problem when he was studying graphene superconductivity before, but he didn't pay attention to it. It was stolen by Oxford University."
Graphene again?
It's amazing!
"I think if Xu mang finds a new theory from graphene, such as this fragile topology, he will basically win the Nobel Prize." "I'm not kidding," Wang said solemnly. "The potential of graphene has been constantly tapped by him, and there is no end at all."
Hua Yanfeng said with a smile: "how is it true, old Wang, you are amazing... Nobel Prize winner's teacher, this reputation speaks out, has a lot of face!"
"Ha ha..."
"forget it, I don't care about this reputation, but... My daughter Wang AI works in xumang laboratory, as long as she is exposed to light." Wang Jiafu, after all, is a father. He will give priority to his children, especially the future.
At the same time,
in the condensed matter laboratory,
Xu mang is carrying out the final experiment. From the research group papers of Oxford University, he almost thought of a solution. In fact, he still relies on graphene for superposition. However, he changed his strategy this time. He sandwiched graphene between two layers of another two-dimensional material tungsten selenide, and then released the electric field 。
"Hoo..."
"the last step!"
Xu mang looks at the complicated equipment in front of him. Before, he let Xiaoman complete it. Now he has to rely on himself.
"The system... I want to quickly learn how to use this experimental device."
[according to the system identification, the current exchange value of experimental equipment proficiency: 1000 (physical skills)]
Xu Mang: I'm sorry,
excuse me!
What Xu mang lacks most is the skill value, good guy... Just want to master the control of the equipment, he has to pay 1000 points of physical skills, which is not robbery, what is it?
Aren't you tired of sleeping?
You can't pay for it!
Five minutes later...
"how delicious
Xu mang skillfully manipulates the equipment in front of him, which he did not dare to think of before.
After setting the parameters,
the computer automatically records the movement of electrons at the edge of the device when the electric field changes. Xu mang takes a look at it, and it is almost this numerical range.
"Hello?"
"Well, I don't come for lunch."
"I'm in the laboratory, the condensed matter physics lab on the edge of the Physics Department building."
Hang up the phone,
Xu looked at the screen and found that the experimental record had been completed, and the next step was brain free computing.
Half an hour later,
Yang Xiaoman came to the laboratory with a bag of takeout. He saw Xu mang sitting at the table, writing with a pen in his hand. A trace of heartache appeared on his face.
Idiot...
"Alas!"
"Dinner." Yang Xiaoman walked to Xu Mang, grabbed the black ink pen in his hand and said solemnly, "eat the rice first."
"Oh..."
the meals Xiaoman brought were all home-made series. It is estimated that they were bought by the roadside, so they can't produce such a flavor at her level.
"How about it?"
"How is the research going?" Xiaoman asked.
"It's all done in the afternoon." Xu mang said calmly: "don't buy this shrimp skin fired wax gourd... There's a smell of scallion."
"..."
"I've helped you choose... Do you like to eat or not?" Yang Xiaoman exploded in an instant. Knowing that the guy in front of him could not eat scallion, he picked out all the scallion flowers, but even if he didn't perform, he was criticized in person.
"Oh..."
"you can remember it anyway." Xu mang said with indifference: "in the future, try to buy as little as possible, and I guess the child with me, is also allergic to scallion, anyway, our family is forbidden to appear scallion."
"Annoying!"
Yang Xiaoman took a white eye and said angrily, "I am so beautiful as a flower. I found you such a husband. I am blind."
"Cut!"
"You're having fun Xu mang retorted on the spot: "it's obvious that I'm losing. Look at yourself... Where can you match me? I'm so handsome and unrestrained, and I'm so romantic... "Xu mang was beaten, but it didn't hurt at all.
At 2:30 in the afternoon,
Xu mang finally solved all the problems. His paper not only solved the fragile topology, but also deduced a new theory according to the characteristics of fragile topology, which is a problem in the field of optics.
In this new theory, light transmitting devices may be easier to observe fragile topologies in experiments. Through preliminary calculation, many "topological" devices proposed in photonics may be examples of fragile topologies.
Of course,
all these are limited to theory, and further experiments are needed to draw a conclusion.
"Or...
" send it tomorrow? "
Less than five minutes after Xu mang left, three unexpected guests came to the condensed state laboratory, namely, three professors in the Department of physics, fan Zhilong, Li Aimin and Wang Jiafu.
"Do you think Xu mang is in trouble?" Fan asked.
"I don't know."
"He calls himself Xue dingxu, so before we open the door of the laboratory, we can't know what happened inside. It's Xu mang who is in trouble or Xu mang who is not in trouble..." Wang Jiafu said with a smile: "this is Xue dingxu's uncertainty."
"..."
"I think..."
as fan Zhilong spoke to Wang Jiafu, he pushed the door and entered. Suddenly, the three people saw a picture of panic.
What about the people?
Where has Xu mangren gone?
"This..."
"where are the others?"
Fan Zhilong didn't talk nonsense. He quickly took out his mobile phone and called Xu mang.
"Hello?"
"Xu mang?"
"And you?" Fan asked.
The next second,
fan Zhilong exclaimed in surprise: "what? You've done it all? "
Li Aimin:???
Wang Jiafu:???
This...
this is half a day at most?
......
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