Everyone looked at this uninvited guest, still exuding the smell of salted fish all over his body, and there was a hint of a cheap smile on his face, if this was a student, there was a high probability that he would be expelled, but this was a professor, and he was also the deputy director of the physics department!

It doesn't make sense at all...

"Hey, hey!"

"Everyone is there?" Xu Mang said with a smile: "Professor Li... Are you free now?"

"What's wrong?" Professor Li asked curiously.

"After a day and a night of hard work, I finally designed the laser crystal I needed, so what... Can you take a look at it for me?" Xu Mang grinned and found a chair, sat down next to Professor Li, and took out his laptop.

“？？？”

“？？？”

“？？？”

What do you mean?

He actually designed it?

Impossible, right?

Not only Professor Li was confused, but all the members of this scientific research team were full of doubts, a person engaged in theoretical physics, spent a day and a night designing a laser crystal, which... How is this possible!

"You..."

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

"Looking at my beautiful face, you know that I like to tell the truth. Xu Mang pointed to his face and said seriously: "I have never deceived anyone, I always exchange my sincerity for the sincerity of others." ”

Words fall,

Xu Mang clicked on the file in the notebook, and then the picture that made the teachers and students of the optics major feel speechless appeared in front of him, which at first glance, it did look good, but I just didn't know whether the accuracy was high or not.

Professor Li was carefully looking at Xu Mang's design, and Kong Fei and several other optics students also came up curiously.

Belch?

Crystals are made up of thousands of atoms arranged exactly?

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

"This..."

"Xu Mang?" Professor Li said to Xu Mang in surprise when he saw the end, "Is this really the laser crystal that you spent a day and a night making?"

"That's right!"

"Is there a problem?" Xu Mang hurriedly asked, "If there is a problem, I will quickly revise it." ”

"No, no, no!"

"There is no problem!" Professor Li said seriously, "How can I tell you... Although this crystal is not useful for us in optics, it is very helpful for you, and the possibility of even obtaining the position of atoms is much lower than the wavelength used to illuminate atomic light. ”

"You're 50 times higher than the limit of what our optical microscopes can usually tell!" Professor Li said solemnly, "but... It can only be used for your experiments, but nothing else. ”

Xu Mang nodded, the crystal he designed was indeed structured according to experimental thinking, that is, this crystal belonged to the matching crystal, and after the experiment was successful, this crystal would be useless.

"Can you help me with the processing?" asked Xu Mang.

"Absolutely!" Professor Li smiled, "but it will take a few days." ”

"Oh..."

At this point,

Kong Fei and the others were a little depressed, saying that Professor Xu didn't understand laser equipment, but he designed a crystal in a blink of an eye, this world is too crazy, right? A person who is engaged in theoretical physics actually came up with a laser crystal.

"Senpai," a materials student asked curiously, "didn't you say... Professor Xu couldn't figure it out? How did he get it out in the blink of an eye?"

"I..."

"This... That's what. Kong Fei said embarrassedly: "Professor Xu can't be defined by simple human thinking, he... You should have seen the school forum post, he is not a normal human, he is not human!"

“...”

“...”

“...”

Although he knew that Kong Fei was joking, there was no other better way to say it except for this explanation, after all, there are countless legends of Professor Xu circulating in Fuda, and every legend that belongs to him is full of absurdity.

"Senior sister?"

"Since Professor Xu is free during this time... So we... Can you let him help us solve the problem?" said one of Kong Fei's elementary school students cautiously.

Kong Fei only then reacted, and now Xu Mang has completed his crystal design, but there is a three-day window period in the middle, which is just the right time to use these three days to guide the problems encountered by the research team.

With his relationship with Xu Mang, he shouldn't refuse, right?

"Professor Xu!"

"It just so happens that you're free right now. Kong Fei smiled and said, "Help us solve this problem!"

Hearing Kong Fei's words,

Professor Li hurriedly said, "Xu Mang, you just have time to guide Kong Fei's group on the problem. ”

"Huh?"

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

Professor Li shook his head and said seriously: "It seems that this is an optical problem, but in fact it is a problem of your theoretical physics and condensed matter physics. ”

"Oh?"

"So high-end?" Professor Li's explanation made Xu Mang curious, turned his head to look at Kong Fei, and asked, "What problems have you encountered?"

moment

Xu Mang had an extra research project plan in his hand, and after a brief flip through it, Xu Mang couldn't help but praise several people, this is indeed a very good research direction, and if successful, it will have a huge effect on the future of photonic chips.

In many devices, electromagnetic waves must go around the bend, and once the turning amplitude is large, the electromagnetic wave will be scattered, affecting the transmission efficiency, and the turning amplitude is small, which is not conducive to saving space.

meanwhile

Kong Fei and the others were very nervous, after all, Xu Mang was the last hope, if even Xu Mang couldn't solve it, this topic could only end here.

No one dared to speak,

For fear of affecting Xu Mang's thinking.

"This—" Xu Mang spoke, but abruptly stopped.

And this sudden opening almost scared Kong Fei and the others unconscious.

How?

Is there a problem?

Thinking of the wrong way?

"This..."

"Yes!" Xu Mang said with a smile: "Not bad, not bad... The idea is very good, and if it succeeds, it is estimated that it will have a huge inspiration for future photonic chips. ”

it!

Professor Xu is so bad!

Deliberately come to a big gasp.

"Professor Xu!"

"Can you finish it in one sitting next time?" said one student helplessly, "You almost scared us to death, I thought at first that our research project was over, and it wouldn't work at all." ”

"Hey, hey..."

"Tease you. Xu Mang said with a smile: "Your research project has some high-end... Many of them belong to a new theoretical system, such as the transition from 2D to 3D, and the first thing to propose is the design theory of 3D optical topological insulators, but you don't!"

"Neither does the experimental system... I don't know what your first step is to study topological insulators, or to study scattering..."Xu Mang said solemnly: "And... You guys also didn't get to the point, the key features of 3D optical topological insulators... You guys didn't sum it up. ”

“...”

“...”

“...”

Kong Fei wanted to say something, but in the end he held back, and this matter needed to be resolved privately.

"What..."

"What problems do you want me to solve?" Xu Mang asked curiously, "It seems that there are a lot of problems..."

Time

Kong Fei didn't know what to do, if according to what Xu Mang said, there were indeed so many problems that he couldn't speak, and almost every one of them needed to be solved.

"Professor Xu..."

"Why don't you help us find a suitable material? One student said sincerely, "This is the place where all our problems lie. ”

Xu Mang read their plan repeatedly, indeed... According to this experimental plan, the problem is in the material, but there is a lack of a perfect system, and even if you get the right material, you will encounter a lot of other problems in the future.

Xu Mang shook his head and said seriously: "Your experimental system is not good, even if you know the materials, you will encounter a lot of trouble." ”

Time

Kong Fei's team fell into an embarrassing situation of not knowing what to do, but Kong Fei was a little embarrassed.

"But what..."

"It just so happens that I'm free at this time, so I'll help you guide me. Xu Mang said with a smile.

Hearing Xu Mang's words,

Several people regained hope, and as long as Professor Xu was on the side, many problems were not problems at all.

afterwards

Professor Li left with Xu Mang's plan, he wanted to help Xu Mang to complete this special laser crystal, while Xu Mang himself stayed in the optical laboratory, watching the members of Kong Fei's group, revise the plan, and try to complete the experimental system.

With Xu Mang's assistance, the team quickly completed the relevant progress, but the problem was not solved, and several people still faced endless problems.

soon

There is a break in between.

Kong Fei found Xu Mang alone and met with old friends in private, and Kong Fei also unceremoniously called Xu Mang's full name.

"Xu Mang!"

"You tell me honestly. Kong Fei asked solemnly, "Is it very difficult for us?"

“...”

"It's okay. Xu Mang said: "Whether it is high or not, whether it is low or not, the main reason is that there is a problem in the structure of your group, and there is no student majoring in theoretical physics or condensed matter physics." ”

Kong Fei hurriedly defended: "Actually, we are working with Nanyang Polytechnic, and there are some aspects that we have not studied because those areas are their responsibility, such as this theoretical framework, and what you said about topological insulator properties. ”

Xu Mang was stunned for a moment, Nanyang Technological University?

Without waiting for Xu Mang to speak, Kong Fei sighed and said: "The research team that cooperated with us protected their information very well, for fear that we would plagiarize them, but for our information, they urged me to submit it one after another. ”

"Now..."

"Cooperation exists only in name, but in reality there is no contact. Kong Fei said: "In general... We were cheated by them, which led to problems with our personnel structure, and their research was progressing very quickly. ”

Xu Mang frowned, and said with an unhappy expression: "Who is the other party's mentor?

"It seems..."

"It's a well-known expert in condensed matter physics, I don't know what it's called. Kong Fei said: "I didn't dare to tell anyone about this situation, and I have kept it a secret until now, for fear of affecting everyone's enthusiasm for research." ”

Xu Mang nodded, but he was very unhappy in his heart, quite a famous condensed matter physics expert?

It's also good,

Experts against authority, see who is good!

"Humph!"

"A bunch of beam-jumping clowns. Xu Mang's face was disdainful: "We will solve this in two days and let so many people die of anger!"

......

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