From top student in college to scientific research powerhouse

Chapter 14: All seven groups are within range!? How is that possible!

The purpose of mathematical modeling in physics is to describe problems so that they can be solved mathematically.

The process of building a mathematical model is not important; what matters is the result and the verification.

If the model validation is accurate, then even if you put together numbers and characters from different sources, it will work fine; if the data validation fails, then no matter how perfect the derivation process is, it is meaningless.

Therefore, it is very difficult for non-top scholars to submit and publish similar research, and they are also unable to conduct peer review.

Xue Kun said that finding a specialized agency to help with verification was a viable approach, and it also meant using his personal connections to get things done.

Zhang Minghao was immediately filled with gratitude.

After explaining the verification of the mathematical model, Xue Kun went on to explain other things, "Now that school has officially started, you need to pay attention to your studies and attend all the classes you are supposed to attend."

"Not to mention the major courses, you still have to pass the required courses and basic courses, otherwise it will affect your graduation."

"Come again on Friday afternoon."

“There’s a fellow student named Ma Yan. You’ll be classmates from now on, so get to know him.”

"Row."

Zhang Minghao nodded and noted it down.

Xue Kun did not have any doctoral students under his supervision, so when he applied for admissions, he offered two spots.

One of them is Zhang Minghao.

The other one was Ma Yan, who was recruited through an interview and is also a master's student from the physics department of this university. However, I haven't had a chance to meet him since the start of the semester.

Xue Kun's words, "officially starting school," also awakened Zhang Minghao, who suddenly realized that he was a doctoral student.

Doctoral students are still students, not beasts of burden from their past lives, and no one is leading them around for them to work.

Most importantly, health is very important.

That night I decided to go to bed early, and I lay down in bed at nine o'clock, but I couldn't fall asleep no matter what I did. I didn't drift off to sleep until 11 o'clock.

I woke up early the next day, at 6:30, and went out to the nearby playground.

Run laps!

There were many people at the playground in the morning, including elderly people taking a stroll and many students, all of whom kept circling the track.

Zhang Minghao also joined in, walking and running around the playground several times, estimating it to be about three kilometers, and his calves were trembling from exhaustion.

I ate breakfast at the cafeteria, checked the time, and went to class.

The first year of doctoral studies also has a considerable number of courses, mainly including general courses and professional courses.

Several general education courses are compulsory, including politics, modern science and engineering, and modern mathematics.

Jiangzhou University also requires doctoral students to take a physical education course.

There are relatively few major courses in the first semester, but they are all core courses.

For example, theoretical mechanics and mathematical methods.

Zhang Minghao had studied most of the courses once and had them in his memory, but he had to start over with courses like "Marxism and Contemporary Times" which he had already studied once.

The morning session was "Marxism and Contemporary Times".

Political science classes are all large, general classes, attended by doctoral students from several colleges together.

He attended the meeting for two hours, feeling as if he had learned something, yet also feeling as if he hadn't learned anything at all.

After class, I went to the laboratory.

Chen Lanjun is stationed in the doctoral students' workspace for a long time, and it seems that you can see her every time you come here.

Xu Chao and Liao Shuyan were not there.

As Zhang Minghao entered, he asked, "Just you? The others? They always seem to be gone."

“Even fewer of you come,” Chen Lanjun replied, looking up.

"I'm a first-year doctoral student, I have to attend classes!" Zhang Minghao immediately found an excuse.

Chen Lanjun rolled her eyes and remarked, "We all came here in our second year of doctoral studies. You're just starting your first year, or even just started the semester, so having a good advisor is really important!"

She sighed and said, "Xu Chao and the others have gone to the back to do experiments, day and night."

"If the preliminary experiments fail and the research falls through, you need to do more experiments to find a new direction; otherwise, how can you write a paper?"

This is true.

Physics doctoral students must conduct more experiments; only by conducting more experiments can they make discoveries and make progress in their research.

"Aren't you going?"

Zhang Minghao asked curiously.

Chen Lanjun smiled and said, "I study computational physics with Professor Chen."

Computational physics is an emerging discipline in physics that arose alongside the development of computer technology.

Computational physics uses computers as tools, computational methods and software as means, and aims to study and discover the structure of matter and its laws of motion.

The international physics community generally believes that computational physics has become the third pillar of physics development, alongside theoretical physics and experimental physics.

Strictly speaking, constructing a mathematical model that relates semiconductor substrate properties to device characteristics falls under the category of computational physics.

Zhang Minghao asked with interest, "Have you decided on a direction for your graduation thesis yet?"

"Teacher Chen suggested a direction."

Chen Lanjun said, "Similar to tinene, we propose the existence of a single-atom layer of a metal element, and then conduct property analysis." "As long as we can study one of them in detail, we can write a paper."

"This one……"

Zhang Minghao was at a loss for words.

"It's very complicated, very complicated!"

As Chen Lanjun spoke, she kept scratching her head, "How difficult is the research on tinene? ​​The same goes for other metal single-atom layers. It involves chaotic systems with multiphysics topology, multiphysics topology, optimization modeling, and so on!"

"I'd much rather be doing experiments!"

Zhang Minghao nodded in understanding.

Multiphysics topology optimization modeling is indeed very complex. Experimental research is time-consuming and laborious, while theoretical research requires a lot of brainpower.

The similarity is that both are difficult.

He thought for a moment and then said, "I have a research idea in this direction, would you like to hear it?"

“The project team has been working on tinene. I think you can study tinene in a single direction and analyze the relationship between the electron and atomic arrangement of the substrate surface and the properties of tinene.”

"The lab has comprehensive data on stanene, which makes it easy to work with."

Chen Lanjun stared at him quietly, then suddenly laughed, "Junior, you've only just enrolled, and you're already giving me pointers on my doctoral dissertation research?"

"You're so funny!"

Zhang Minghao was taken aback for a moment, then smiled nonchalantly.

……

New Microelectronics Semiconductor R&D Base, Gaotong Science and Technology Park, Nam Giang Province.

The materials research and development team office is located on the second floor.

Li Jiaxin held the newly printed documents, staring at them intently.

He is a materials engineer in the R&D department, and the semiconductor materials group he belongs to is the core of the R&D team.

The materials I have were sent to me by my old classmate Xue Kun.

"Is it a mathematical model describing the relationship between semiconductor substrates and devices?"

"What? There are atoms and electrons too..."

The materials Xue Kun sent included a brief explanation of the mathematical model parameters.

Li Jiaxin roughly understood.

If it were anyone else, and they presented him with such information for verification, he would have thrown it straight into the trash.

How are the atoms and electrons of a semiconductor substrate related to the characteristics of the device?
Isn't this funny?

When did the fundamental theories of semiconductors become so sophisticated?
Old classmate, we should still give you some face.

Li Jiaxin took the documents to show the team leader, Shi Yaokun, who was also the deputy director of the R&D department. Shi Yaokun was a middle-aged man with a stern face.

After glancing at the information and listening to Li Jiaxin's explanation, Shi Yaokun immediately nodded and asked, "Is your classmate a professor in the Physics Department of Jiangzhou University?"

"I used to be at Donggang University, I just passed away."

Shi Yaokun thought for a moment, then nodded and said, "Maybe it's some new research. He just said he'd help verify it, and he doesn't need our data, right?"

"A result is all that matters."

"Then let's find someone to calculate it."

Shi Yaokun said, "Didn't we hire a few interns? Give them the data and let them do the calculations."

He didn't seem to care after he finished speaking.

Li Jiaxin went to find experimental data and also asked an intern for help.

Although he said he would have the intern calculate it, it was a request from an old classmate, so he gave a simple explanation and explained how to verify it.

Before leaving, he specifically instructed me, "Tell me immediately if you have any results."

After saying that, he went back to his office.

All three interns are PhD graduates; one majored in physics, and the other two majored in computer science.

Our different specialties make us a good fit for collaboration.

One team is responsible for summarizing and analyzing experimental data; another team is responsible for calculating the raw values; and the last team is responsible for substituting the values ​​into the model for calculation and verification.

Two hours later, an intern arrived at the R&D team office and immediately called out, "Engineer Li!"

"We summarized seven sets of experimental data, and after substituting them into the calculation, they were all within the range of the model's values."

Li Jiaxin stared at the computer screen, about to put the coffee in his hand into his mouth.

He was startled when he heard the shout.

When he realized what was happening, he jumped up and demanded, "Seven sets of data? All of them are within the acceptable range!?"

"Oh right?" The intern who came to report was startled.

"How can it be!"

Li Jiaxin blurted out instinctively, then quickly walked out of the R&D office, "Let's go take a look!"

(End of this chapter)