Chapter 444

The next day,

as usual, Professor Li Aimin brought his own textbooks to the students. Yesterday, Xu Mang's appearance did not disturb his rules, but he just felt that Xu mang was a bit stubborn. He knew it was very difficult, but he still had to do it.

To speak of a good point is called obstinacy, the ugly point is a bit silly, no... is very silly!

The class was finished soon,

just as Professor Li Aimin left, Kong Fei, one of his favorite students, found him. He had a difficult problem to guide him.

As an outstanding optical professional, Kong Fei's research group and a research group of Nanyang University of technology cooperated to find a three-dimensional optical topological insulator. The goal of these two research groups is to expand the three-dimensional topological insulator from fermion system to boson system.

Thus, the transmission efficiency of photons in the waveguide is greatly improved.

However,

there are problems on both sides. The research on three-dimensional optical topological insulator is still a blank in this field. The experimental research on optical topological insulator is only limited to two-dimensional space. In many cases, a group of people are confused.

"Professor Li."

"Now we have a very troublesome problem." "We have encountered difficulties in the design of three-dimensional optical topological insulators, and we lack a new kind of artificial metamaterial," Kong said seriously

"Materials..."

"you'd better find materials department." "Maybe I can help you," Li said

"..."

"Professor Li... Two of our research group are from the Department of materials." Kong Fei said bitterly, "these two people went to their tutor, but they didn't satisfy us. Moreover, even if we solved the material problem, the experimental design was also a big problem."

Kong Fei was desperate. She chose this topic by herself, and Nanyang Institute of technology also invited her to study together. As a result, just two weeks ago, she met with triple troubles of theory, materials and experiment. At present, this research topic seems to be a pseudo proposition.

"I'll take a look at it for you this afternoon." "But you have too much hope, probably I don't know," Li said

"As long as you can come."

Back in his office,

Professor Li has done a variety of researches on this topological insulator. In fact, topological insulator is a research hotspot in the field of condensed matter physics. It is a very interesting material. It is insulated inside, but the surface can be electrified.

Inside the topological insulator, the electronic band energy results are similar to that of the conventional insulator. The Fermi level lies between the conduction band and the valence band, while the surface quantum state lies in the band gap of the block structure, thus allowing conduction.

But...

we try to extend the theory of topological insulator to optical system. Although it has been verified in two dimensions, a research group of Princeton University has realized two-dimensional optical topological insulator through experiments, but this three-dimensional optical topological insulator... Is not optimistic in the physical world.

In the afternoon,

Professor Li Aimin came to Kong Fei's laboratory and saw the process of her experiment. The result was a little helpless for Professor Li. At present, the subject is in the theoretical state, and there is no ready-made experimental equipment to help measure, and even there are problems with the theory.

This is not to blame Kong Fei. After all, this is a new field. It is not easy to build a science fortress in the ruins. From electronic system to optical system, from two-dimensional to three-dimensional, there are many essential differences in research objects.

"It's finished..." a student said pessimistically, "Professor Li... Do we still have a chance to rescue?"

Hearing this student's words, Professor Li gave a wry smile. Generally speaking, he was sentenced to death, but... It is not that we can't study it. There may be opportunities in the future.

"In fact..."

"you still have a chance." Professor Li said solemnly, "as long as we can find the materials, the rest of the problems are almost solved."

Materials,

is not it!

But I can't find it. Even the material department is helpless.

"Yes

All of a sudden,

Kong Fei exclaimed excitedly. Just now, a shadow of a slut appeared in her mind. There was a cheap smile on her face. It looked like a free gift, but it often surprised people.

His nickname is pi pi Xu, and his real name is Xu mang. He was a professor of theoretical physics in the Department of physics. He was his younger brother in primary school half a year ago.

"Professor Xu!"

"We can ask Professor Xu for help. Maybe he can solve our problem." Cried Kong Fei.

Xu mang?

Professor Xu?

Yeah!

Hearing Kong Fei's words, everyone was very excited except Professor Li. However, Professor Li Aimin was a little helpless.

"If you want to find Professor Xu, it is estimated that it will take some time." "He is designing a new laser device," Li Aimin said seriously“？？？”

“？？？”

“？？？”

What?

Professor Xu, who is engaged in theoretical physics, actually began to involve laser equipment?

Several optical professionals are confused. It's not that they look down on Professor Xu, but... It's not in line with science. For example, a person who sings and dances suddenly goes to the NBA to play basketball. How can it be...

let alone NBA, it's estimated that even the school team can't get in.

"Professor Li?"

"You... You're not kidding?" Kong Fei asked in surprise, "is Professor Xu really designing laser equipment? He... Isn't he studying theoretical physics? Why is he studying optical equipment all of a sudden? Is it hard for Professor Xu

"This..."

"he uses laser equipment to study the probability of quantum mechanics, to detect the probability of atoms in space." Li Aimin said: "in short, you give up the decision to look for Xu mang for the time being. Now he is really not free."

After Li Aimin left,

the laboratory was very busy. What they discussed was not their own problems, but Xu Mang's design of laser equipment.

"Schoolgirl?"

"You seem to have cooperated with Professor Xu. Do you think the success rate of Professor Xu's design of a new laser equipment is high?" A student asked curiously, "I'm studying materials. I don't know the door frame of your physics department."

"Hard!"

"Almost impossible." Kong Fei seriously said: "although Professor Xu used pure mathematics to find that light can propagate in a spiral way, thus proving a self torque property of light, this is proved theoretically."

"And almost all his achievements are based on theoretical calculation." Kong Fei pauses for a moment, and continues: "it is absolutely impossible to design laser equipment by theory. Please believe the words of an optical major."

This is...

isn't Professor Xu giving it in vain?

"Schoolgirl?"

"Why does Professor Xu still..." the student frowned and asked, "what else does he design?"

Kong Fei thought for a moment. Faced with Pippi Xu, she really couldn't find any reason to explain this strange behavior. No reason could be applied to Pippi Xu.

No!

It may be idle!

"More free." Kong Fei said with a helpless smile: "in short, it's like this... Don't discuss him, now we study our own."

As the saying goes,

everyone in the laboratory is once again in their own dilemma.

...

at 4:30 p.m.

Yang Xiaoman returned to his own and Xu Mang's dwelling place with a body of tiredness. He pushed the door and saw his dear. He threw himself in front of the computer and didn't know what to do. However, as soon as he arrived at the temporary residence with limited space, Yang Xiaoman's tiredness was swept away.

Maybe...

this is the feeling of home.

"Idiot?"

"What are you doing?" Yang Xiaoman sat beside Xu Mang, his head on his shoulder, looked at the three-dimensional picture on the computer, and asked in a confused way: "are you building a model? How is it different from the general model? "

"Design a laser mesh lattice, a crystal made up of thousands of precisely aligned atoms." "I'm going to test a probability problem in quantum mechanics, whether probability is equal to everything in a quantum system," Xu said seriously

Eh?

This... Isn't this what I'm doing?

Yang Xiaoman is stunned for a moment. She and her small team play this probability game. Generally speaking, the market is often in an uncertain state, and it is difficult to accurately measure and estimate.

Therefore, Xiaoman will carry out various profitable transactions, and then all kinds of hedging. However, the speed of making money is too slow. Now Yang Xiaoman intends to give up hedging and directly adopt the investment mode of bearing high risks and pursuing high returns.

In short,

her appetite is not 500 million a year later, but 1 billion a year later.

"Er..."

"you can also design lasers?" Yang Xiaoman asked with a confused face: "are you planning to harm the optical profession?"

"..."

"what is a disaster?" Xu mang turned to look at Xiaoman and said helplessly: "this is called... Forget it. It's a disaster!"

"Cut!"

"I don't seem to agree with you. It's a disaster." Yang Xiaoman gave a white eye and said: "big idiot..."

"how much did you earn today?" Xu asked.

"Not bad."

"I made a BMW 740 today." Yang Xiaoman stretched out and said with a smile, "how about I buy you a sports car on your birthday? Today, I heard some boys in the team talking about sports cars. It seems that there is a kind of car called ahoroXu mang looks at Xiaoman in horror. This woman must be crazy... Apollo, the sun god, dare to drive out of the car? If you rub it carelessly, you will commit suicide, and you can't buy this car.

"Forget it... I dare not open it even if I buy it." Xu mang smiles.

Yang Xiaoman tooted his mouth and seemed to think of something. He said in a hurry: "well, how about I buy you a Panini?"

Xu Mang:???

Ah?

Panini?

KFC breakfast?

"Pagani?" Xu mang was covered with black lines and said helplessly, "how about two or thirty million...

" how? "

"Your future wife will be able to make money, will you pay attention to two or thirty million yuan?" Yang Xiaoman disdains to say: "I decided, every year your birthday, I give you a sports car, you want to also want, don't also want, in short... So happy decision!"

"Do you know my birthday?" Xu asked.

"X month XX day!"

Looking at Xu Mang, Yang Xiaoman asked, "where is my birthday?"

"..."

"Ouch!" Xu mang suddenly stood up and looked at the direction of the kitchen: "there is no food in the refrigerator!"

After words,

ran away, leaving a confused little man.

"Ah, ah!"

"Asshole!"

"I told you just a few days ago, and you forgot it again!"

In the morning,

in the morning,

Xu mang came to the building of the Department of physics with his notebook on his back. He knocked on the door in front of Professor Li Aimin's office for a while, but no one responded.

"Classmate?"

"Do you know where Professor Li Aimin is?" Xu mang caught a student and asked in a hurry.

"In..."

"in the optical laboratory on the fourth floor, Professor Xu." Said the student respectfully.

"Oh..."

after saying goodbye to this kind-hearted classmate, Xu mang hurried to the door of the optical laboratory on the fourth floor. He found that the door was half hidden and could not be pushed in. He saw a group of people sitting inside, including Professor Li Aimin.

"Eh?"

"Xu mang?"

"Why did you come?"

......

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