Chapter 445

Everyone looked at the uninvited guest. He was still smelling of salted fish all over his body, and his face was tinged with a smile. If he was a student, he would be expelled. However, this is a professor, and he is also the deputy director of the physics department!

No reason at all...

"haha!"

"Where is everyone?" Xu mang said with a smile: "Professor Li... Are you free now?"

"What's the matter?" Professor Li asked curiously.

"After a day and night of hard work, I have finally designed the laser crystal I need. What... Help me have a look?" Looking for a chair with a smile, Xu mang sat beside Professor Li and took out his laptop.

“？？？”

“？？？”

“？？？”

What do you mean?

He designed it?

Can't be?

Not only did Professor Li look confused, but all the members of the research group were full of doubts. One of them, who was engaged in theoretical physics, spent a day and a night designing a laser crystal. How could this be possible!

"You..."

"you're not joking, are you?" Professor Li asked in horror.

"If you look at my beautiful face, you can see that I like to tell the truth." Xu mang pointed to his face and said seriously, "I have never cheated anyone. I always exchange my sincerity for others' sincerity."

At first glance, Xu mang opened the files in his notebook, which made the teachers and students of optics specialty feel speechless. At first glance, it was really like a model, but he didn't know whether the accuracy was high.

Professor Li is looking at Xu Mang's design carefully, while Kong Fei and other students majoring in optics have come together.

Eh?

A crystal consists of thousands of atoms arranged precisely?

This seems to be similar to the optical crystals of nanomaterials... But there are some differences.

"This..."

"Xu mang?" Professor Li saw the end, surprised Xu mang said: "this is really you spent a day and a night to make a laser crystal?"

"Yes

"Any questions?" Xu mang asked in a hurry: "if there is a problem, I'll quickly revise it."

"No, no, no!"

"No problem!" Professor Li said seriously: "how can I tell you... Although this crystal has no effect on our optics major, it is of great help to you. The possibility of obtaining the position of atoms is far less than the wavelength used to illuminate atomic light."

"You're 50 times higher than the limit of our optical microscope can usually distinguish!" Professor Li said solemnly, "but... It can only be used in your experiment, but nothing else."

Xu mang nodded. The crystal he designed was indeed constructed according to the experimental thinking. That is, this crystal belongs to the supporting crystal. After the experiment is successful, this crystal will be useless.

"Can you help me process it?" Xu asked.

"Absolutely Professor Li said with a smile, "but it will take a few days."

"Oh..."

at this time,

at this time,

Kong Fei was a bit depressed. He said that Professor Xu didn't understand laser equipment, and as a result, he designed crystals in an instant. Is this world too crazy? It's basically reasonable... A person engaged in theoretical physics has come up with a laser crystal.

"Student sister..." a student in the Department of materials asked curiously, "didn't you say that Professor Xu couldn't get it? How did it come out in a twinkling of an eye? "

"I..."

"this... That what." Kong Fei said awkwardly: "Professor Xu can't be defined by simple human thinking. He... You should read the post on the school forum. He is not a normal human being, he is non-human!"

"..."

"..."

"..."

"..."

although we know that Kong Fei is joking, there is no better explanation except this explanation. After all, there are countless legends of Professor Xu in Fuda, and every legend belonging to him is full of absurdity.

"Schoolgirl?"

"Now that Professor Xu is free, can we ask him to help us solve the problem?" A little brother of Kong Fei said cautiously.

Kongfi finally realized that Xu mang had finished his crystal design. However, there was a three-day window period in the middle, which could be used to guide the research group's problems.

With their relationship with Xu Mang, should not refuse?

"Professor Xu!"

"It happens that you are free now." Kong Fei said with a smile, "help us solve this problem!"

Hearing Kong Fei's words,

Professor Li said in a hurry: "Xu Mang, you just have time to guide Kong Fei's group's problems.""Ah?"

"Professor Li, you can't solve it?" Xu asked curiously.

Professor Li shook his head and said seriously: "it seems that this is an optical problem, but it is actually a problem of your theoretical physics and condensed matter physics. The transformation from two-dimensional to three-dimensional requires a physical theory support. In addition, topological insulators belong to condensed matter."

"Oh?"

"So high end?" Professor Li's explanation made Xu mang curious. He turned to Kong Fei and asked, "what problems have you encountered?"

After a moment,

Xu mang had a research project plan in his hand. After a brief reading, Xu mang could not help praising several people. This is indeed a very good research direction. If it is successful, it will have a great effect on the future of photonic chips.

In many devices, the electromagnetic wave must go around the bend. Once the turning amplitude is large, the electromagnetic wave will scatter, which will affect the transmission efficiency. If the turning amplitude is small, it will not be conducive to saving space. Kong Fei's intention is that there will be no scattering in the sharp turning.

At the same time,

Kong Fei and his colleagues were very nervous. After all, Xu mang was the last hope. If Xu mang could not be solved, the project could only be ended.

No one dares to speak,

for fear of affecting Xu Mang's thinking.

"This..." Xu mang opened his mouth, but suddenly stopped.

This sudden opening almost made Kong Fei faint.

What?

Is there a problem?

Wrong way of thinking?

"This..."

"OK!" Xu mang said with a smile: "it's not bad. It's very creative. And once it's successful, it's estimated that it will have a great inspiration for the future photonic chip."

Sleeping trough!

Professor Xu is so bad!

A big gasp on purpose.

"Professor Xu!"

"Next time you talk, can you finish it all at once?" "You almost scared us to death. At first, I thought that our research project was over, and it was impossible," said one student

"Haha..."

"tease you." Xu mang said with a smile: "your research project, there are some high-end... Many belong to brand-new theoretical system, such as the transformation from two-dimensional to three-dimensional. First of all, we should put forward the design theory of three-dimensional optical topological insulator, but you have not!"

"There is no experimental system... I don't know what your first step is to study topological insulator or scattering problem..." Xu said seriously, "and... You have not grasped the key points, the key characteristics of three-dimensional optical topological insulators... You have not summarized them."

"..."

"..."

"..."

"..."

Kong Fei wanted to say something, but he finally resisted, and this matter needs to be solved in private.

"So what..."

"what problems do you want me to solve?" Xu mang asked curiously: "it seems that there are many problems..."

for a while,

Kong Fei didn't know what to do. According to Xu Mang's words, there were so many problems that almost every one needed to be solved.

"Professor Xu..."

"can you help us find a suitable material?" One student said sincerely, "all our problems are in this place."

Xu mang repeatedly read their plans. It is true that according to the experimental plan, the problem lies in the materials, but there is a lack of a perfect system. Even if we get the right materials, we will encounter a lot of other problems in the future.

Xu shook his head blankly and said seriously, "your experimental system is not good. Even if you know the materials, you will encounter a lot of trouble."

For a time,

Kong Fei's group fell into an awkward situation at a loss, but Kong Fei had some difficulties.

"But..."

"it happens that I'm free at this time, so I can give you some guidance." Xu mang said with a smile.

Hearing Xu Mang's words,

several people have regained hope. As long as Professor Xu is on the side to guide them, many problems are not problems at all.

Later,

Professor Li left with Xu Mang's plan. He wanted to help Xu mang complete the special laser crystal. Xu himself stayed in the optical laboratory, watched the members of the Kongfei group, revised the plan, and tried to complete the experimental system.

With Xu Mang's help, the team quickly completed the relevant progress, but the problem has not been solved, several people are still facing endless problems.

Soon,

break time..

Kong Fei finds Xu mang alone, and when his old friends meet in private, Kong Fei calls Xu Mang's full name without politeness.

"Xu mang!""Tell me the truth." Kong Fei asked solemnly, "is our difficulty very high?"

"..."

"OK." "If you say it's high or low, it's mainly because there's a structural problem in your group. There's not a single student majoring in theoretical physics or condensed matter physics," Xu said

"In fact, we cooperated with Nanyang Polytechnic Co., Ltd., and some aspects were not studied because they were responsible for those fields, such as the theoretical framework and the topological insulator characteristics you said."

Xu mang Leng for a moment, Nanyang University of technology?

Without waiting for Xu mang to speak, Kong Fei sighed and said, "the research team that we cooperated with protected their own data very well, for fear that we would plagiarize them, but we urged me to submit our data to us."

"Now..."

"cooperation only exists in name, but actually does not contact with each other." "All in all, we were trapped by them, which led to problems in our personnel structure, and their research progress was very fast," he said

Xu mang frowned and said with displeasure: "who is the tutor of the other party? What's the origin of it

"It seems that..."

"is a famous expert in condensed matter physics. I don't know what his name is." "I didn't dare to tell anyone about this situation. I've been hiding it until now. I'm afraid it will affect everyone's enthusiasm for research," Kong said

Xu mang nods, but he is very upset. He is a famous expert in condensed matter physics?

Well,

experts on the authority, to see who is good!

"Hum!"

"A bunch of clowns." Xu mang disdained: "we will solve this problem in two days, so that the group of people are very angry!"

......

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