Liu Yun'er did not go to the laboratory, but returned home with Lin Fan. The first step to get home was to take her notebook and come to Lin Fan's study.

"for you!"

"The above is the collected data, including the problem of boundary dispersion." Liu Yuner handed her notebook to Lin Fan and said seriously: "Honey... do you really not need to go to the laboratory? Can it be solved at home?"

"No need." Lin Fan took the laptop, plugged the mouse into the laptop, slided the scroll wheel key... looking at some data above.

Liu Yuner frowned. Although he accurately explained the details of the problem, he did not go to the laboratory... The data collected alone could solve the problem of boundary scattering, which sounded incredible.

Just as Lin Fan was looking at the experimental data and reports, Liu Yuner had found a chair and sat next to him.

“…”

"Don't you read the data and reports carefully?" Liu Yun'er found that her husband was reading very quickly, probably the legendary ten lines, and then turned to the next page. Is this speed certain to solve the problem? Instead of perfunctory?

"No need." Lin Fan said casually, and continued to start his own performance art.

Liu Yun'er opened her mouth and wanted to refute something, but in the end she held it back. Since...he dared to sit here, it means he was confident. After all, this bastard was very bold in making him angry, and the rest of the matter was always cautious.

In a moment,

After reading all the data and reports, Lin Fan said thoughtfully: "Have you set a high goal?"

"Well?"

"No." Liu Yun'er frowned and said seriously: "Although the relevant institutions require us to have a certain number of articles, you know me, and I have never listened to so-called quantitative articles. I only pursue the quality of articles."

“…”

"Is that true?" Lin Fan nodded.

"Of course, that's...why are there any problems?" Liu Yuner asked.

"Uh... nothing, I can solve it." Lin Fan looked at the big fairy and wanted to say something... but then he held it back and said casually: "Do you know the boundary state of symmetry protection?"

Liu Yun'er glanced and said angrily: "Hey! Can you respect the top experts in condensed matter physics a little? I don't know what symmetry protection boundary state is? I know you are smart, but I'm not stupid either!"

"Ouch..."

"Why are you angry, I just ask casually." Lin Fan said helplessly: "What... I'm starting?"

"Hurry up!"

"Don't be too slow..." Liu Yuner was so angry that she urged with a dark face.

soon,

Lin Fan began to build a basic model on his computer, and the big fairy sitting next to him looked confused.

"Can you calculate it with a two-dimensional system?" Liu Yuner asked curiously.

"It's almost done."

"This way, you can calculate the Vanil function." Lin Fan said imprudently while adding atoms: "You will find that... the symmetry will be destroyed, and the Vanil function will be in half, but this is just the original model."

Pause for a moment,

Lin Fan continued: "Let's talk about the model expansion and expanding to three-dimensionality, and we can roughly calculate the energy band structure."

Listening to Lin Fan's narration, the big fairy was a little surprised and asked carefully: "Husband...how do you know so much? You obviously haven't even done an experiment, but you can design such a theory."

Haven't done it?

Just kidding... I have been working on this laboratory for a whole month!

Lin Fan naturally would not tell the big fairy about these things, and silently designed his two-dimensional system, and his speed made the big fairy a little dumbfounded.

So fast!

How did this be done?

Liu Yun'er looked at Lin Fan who was constantly entering data beside him, and could not imagine that he had just seen the data report he had given him three minutes ago, but now he was at a nearly abnormal speed, with the possibility of design theory.

Why is it so powerful?

but...

No matter how powerful he is, he is still his husband.

Thinking of this, Liu Yuner felt much more balanced.

"alright!"

"Teacher Liu... Look here." Lin Fan greeted the big fairy beside him and said with a smile: "Is it the same as what I said? It can be turned into two groups, right?"

“…”

"It's true?!" Liu Yun'er looked at a set of extremely complex mathematical derivation formulas, and a hint of amazement appeared between her eyebrows, and then asked, "So should we perform numerical verification next?"

"Um!"

"But..." Lin Fan stood up and said seriously: "Come on!"

"I?"

Liu Yuner was surprised, then said helplessly: "But...I...I don't know what to do."

"fine!"

"I will teach you." Lin Fan grabbed one of the big fairy's hand, hurriedly pulled her to his chair, forced her down, and held Liu Yun'er's little hand holding the mouse from behind her, resting her head on her shoulder.

"Based on constructing a zero-dimensional boundary state in this two-dimensional system, have you discovered that atoms form covalent bonds?" Lin Fan said gently: "Then split from the middle... and you will get one electron per part and one electron per corner."

"That's right!"

"It only becomes meaningful when the rotation is symmetrical." Lin Fan whispered: "That's why... you always encounter boundary dispersion, but this situation is not common. We need to further improve and expand, explore from two-dimensional to three-dimensional."

"Now..."

"You can verify the numerical value first." Lin Fan approached Yun'er's ear, and used his hoarse and magnetic voice to seduce the big fairy, and finally kissed her earlobe.

In an instant,

Liu Yuner trembled all over, bit her lip gently, suppressing the deepest part of her heart, and then began to calculate and verify.

When verifying,

Liu Yuner once again sighed at Lin Fan's strength. The process was still so perfect and streamlined that he could not tell at all that he was just a person who had just come into contact with the experimental report.

soon,

Liu Yuner calculated the entire process and re-examined Lin Fan's formula, without any abnormal changes.

"It's done?"

"Um..."

"Come on...I'll teach you how to expand to three-dimensionality." Lin Fan grabbed Liu Yuner's hand holding the mouse, and his head was still resting on her shoulder.

Just after clicking on the software, Lin Fan suddenly stopped and leaned into his ear and said softly: "Teacher... your hands are so slippery!"

“…”

"Strange hooligan...be serious!" Although she was very worried after being tossed by Lin Dazhu's hooves... but she hoped to solve the problem in front of her.

"Um!"

Lin Fan hurriedly corrected his attitude and began to explain his ideas under the three-dimensional system.

"Teacher Liu."

"Look at the rotational symmetry protection boundary, the left side is the center of the Vanil function flow from Kz=0 to Kz=π, the middle is the surface state caused by the flow of electrons, and the right side is what I call...the energy band structure." Lin Fan pointed to the model on the screen and said seriously.

Liu Yuner was stunned for a moment and immediately asked, "Idiot... It seems that this is just that the center of the charge and the atomic position do not coincide, right?"

"Ouch?"

"My good schoolboy is my good wife!" Lin Fan said with a smile: "You are so smart!"

Liu Yun'er glanced at him and said angrily: "Don't mess around... say it quickly!"

"That's right!"

"I said... it's not a mediocre state at this time." Lin Fan smiled and said: "Kz=0 and Kz=π both have time inversion symmetry, but nothing else... Therefore, the theory in two-dimensional systems does not apply here. In such a system, every Kz system is at the edge, but due to the flow of the charge center,... you are the same as you said."

As soon as the words fell,

Lin Fan asked, "Teacher Liu... do you understand?"

Liu Yun'er rolled her eyes. Who is the teacher?

but...

Looking at the physical model under the theory on the computer screen, Liu Yuner never worshiped someone like today.

Too awesome!

How did he do it?

"Teacher Liu?"

"Looking at your look... do you admire me very much at this moment?" Lin Fan asked.

“…”
To be continued...