I really just want to be a scholar

Chapter 498 Computational Materials Science Ignored
It was already Friday when Qin Ke returned to Qingmu University.

At noon, after having dinner with Ning Qingyun, he walked to Professor He Liangfu's laboratory together, intending to learn more about two materials science topics.

Ning Qingyun was a little worried about Qin Xiaoke and said, "Is it really okay for Xiaoke to be alone at home?"

"Don't worry, that girl is not a primary school student. She will be 15 years old this year, and she will be 16 years old soon. She has so much food at home, and her own account has tens of thousands of yuan. She won't be hungry for takeout. If you're really worried, you can ask Shimmer to turn on the monitoring system to secretly see if the little girl has done anything bad in the hall, and the hall has an anti-theft monitoring system." Qin Ke urged.

Last night when he returned to the capital with Qin Xiaoke, this little girl dominated Ning Qingyun, and at night even pestered Ning Qingyun to sleep with her on the grounds that she was afraid of sleeping alone in a strange room.

This made Qin Ke, who hadn't seen Xiaobaicai for a few days, and planned to get close and "visit" the room carefully, how embarrassing!

It is tolerable, which is unbearable, Qin Ke decided to teach the ignorant little girl a good lesson, he didn't even prepare breakfast for her today, and took Ning Qingyun back to school early in the morning.

Ning Qingjun looked at Qin Ke's full stomach, and couldn't help laughing: "So brothers and sisters get along like this?"

"That's right, this is my brother." Qin Ke didn't take it seriously: "I believe that most of those who have brothers and sisters have been in this state of 'come, hurt each other' for a long time, and the scene of 'brothers and sisters respect each other' , exists only in memory.”

Ning Qingyun pursed her lips and chuckled: "You speak fiercely, if something really happened to Xiao Ke, wouldn't you be too nervous?"

"I can't help it. She's my sister. I'm just such a younger sister. I can't ignore it, right? But according to me, we have to treat such a little girl with leniency and strictness."

Ning Qingyun, who has no brothers and sisters, still finds this way of getting along quite new. She yearns for it: "That's great... But I have no temper for Xiao Ke at all. She is so cute, and it's too late to pet her."

"Now you are also her older sister. Don't spoil her all the time. I didn't see that she is now relying on your support. She is going to be turned upside down? Last night, she didn't go to bed until after twelve o'clock. I guess that lazy girl hasn't slept until now." Get up, or just get up..."

Before Qin Ke finished speaking, the phone vibrated, indicating that there was new news.

He took it out and took a look, then pouted and handed it to Ning Qingyun: "Look, I guessed right, right?"

I saw Qin Xiaoke's WeChat message displayed on the phone: "Brother, I woke up, but I didn't find breakfast... You won't forget to prepare breakfast for me, right? (Tears.jpg)"

Qin Ke quickly replied: "Who said that after coming to the capital, he can take good care of himself and learn to do housework and cooking? Prepare breakfast by yourself, and clean the floor at home. When I go back at night and see a little dust on the floor, I will Throw you out to sleep on the street."

"Brother, are you a devil? Doesn't your conscience hurt like this? I want to find Sister Ning to accuse you of your cold-bloodedness! (Tears streaming down my face.jpg)"

"Oh, yes, there is a reason for me to send you back to Yuanzhou tomorrow."

"No, no, brother, I am obedient and obedient, I will cook breakfast and mop the floor right away... (Life without love.jpg)"

The corners of Qin Ke's mouth curled up, and he said to Ning Qingyun: "Let's go, ignore that lazy girl, just let her change her lazy habit. Go back at night, drive her to have a good meal, and she will be happy, that little girl Very coaxing."

Ning Qingyun couldn't help laughing: "Anyway, there are people waiting at home, so I always feel very warm, and the house will be much more lively when Xiao Ke comes."

Qin Ke glanced at her lower abdomen: "You really want to have fun, let's have a baby to play, anyway, just count the dangerous period and plant the seeds..."

Ning Qingyun blushed suddenly, and she reached out to pinch Qin Ke: "What are you thinking about all day long? We are only freshmen!" Although Qin Ke is very close, she has already thought about the future. If you want to marry this villain, there is no girl who is not shy when you hear the topic of having a child.

Qin Ke just made a joke casually, and he was still very careful. Now that the two are not registered for marriage, if Ning Qingyun has a child, there will be a lot of gossip.How could Qin Ke be willing to let his beloved girl suffer a little bit of harm?
……

When Qin Ke brought Ning Qingyun outside Professor He Liangfu's laboratory, Professor He Liangfu, who had been notified in advance, had already been waiting in front of the laboratory building.

Qin Ke was a little surprised to find that after not seeing him for a few months, Professor He's originally black and thick hair had a lot of silver streaks in it, and his face also showed a little bit of unconcealable fatigue.

Professor He's scientific research pressure is so great recently?
"Professor He, how dare we ask you to pick him up in person?"

"Hey, I'm asking you for help this time, why are you being polite. Let's go, let me introduce you to the members of the research team first."

Like Professor Hu Qingfeng's laboratory, Professor He Liangfu's laboratory also occupies an entire floor of the Experimental Building of the Department of Materials.There are real laboratories inside, as well as meeting rooms, lounges, archives, offices, etc.

Professor He He Liangfu introduced: "The topics you both participated in are 'coating research on carbon nanotube fibers' and 'improvement of relaxor ferroelectric thin film materials'. At present, each project has five doctoral students and graduate students. About 17 people, each led by two postdoctoral fellows."

Professor He Liangfu is a doctoral student and a postgraduate supervisor, and the researchers involved in the project are basically his students.

Qin Ke and Ning Qingyun are no strangers to joining the new research group, and under the introduction of Professor He Liangfu, although many doctors and graduate students felt a little strange that they came across the border to join their research group, the two People who are too famous are still warmly applauded.

Professor He Liangfu told the two postdoctoral fellows: "Okay, everyone is getting to know each other, and the next work will be to cooperate with each other. Both Qin Ke and Ning Qingyun will join your two teams at the same time, and try to calculate the material In addition, they will also conduct experiments by themselves, as seniors, you should take them with you."

The so-called post-doctorate is not a degree, but after obtaining a doctorate, he will be engaged in scientific research work in scientific research institutions and laboratories of universities. Generally, if he achieves excellent scientific research results within two years, he will have the opportunity to stay in the school or go to other places. Colleges and universities, embark on teaching positions.

Although postdoctoral students are often those who did not perform well during their Ph.D. studies, and the number of published papers did not meet the standard of staying as a lecturer, but there are also some who are not good at expressing their personality and do not want to take up a teaching position, but only want to engage in scientific research Talents who are working, they use the post-doctoral position as their qualification transition, and strive to make better scientific research results within two years, so that they can be used as bargaining chips to enter high-end research institutions or large companies after they leave the station.

Huo Guangxin, a postdoctoral fellow in the project team responsible for the "Improvement of Relaxor Ferroelectric Thin Film Materials", first expressed his opinion: "Welcome two juniors to join us." .

The post-doctoral fellow in charge of "coating research on carbon nanotube fibers" is a female senior. Her name is Tian Tianjiao. She has a rustic name, and she is not outstanding in appearance. She has a round face and a fat body. She smiles with small eyes and is quite friendly. : "Qin Ke, Ning Qingyun, I have known you for a long time, I didn't expect that you are also good at computing materials, amazing!"

Qin Ke guessed that Huo Guangxin would take the scientific research route, while Tian Tianjiao probably wanted to switch to the teaching route.

He reached out to shake hands with Huo Guangxin and Tian Tianjiao, and said with a smile, "Qingyun and I are both new to computational materials science. When Professor He mentioned it, we just wanted to try this direction, and we are far from being good at it. In the future I also ask the two seniors and sisters to give me more advice."

It turned out that he was fooled by Lao He because he had never been in contact with computational materials science...

Including Huo Guangxin and Tian Tianjiao, everyone looked at Qin Ke with a hint of pity that "these two have gone astray".

No wonder, computational materials science is not an easy subject to learn.

Computational materials science is a branch of computational chemistry and computational physics. In essence, it is no different from computational fluid dynamics, computational biology and other subdivisions. The core is guided by theory and based on experimental data. From the mathematical model, calculation simulation, calculation deduction.

Like other computational sciences, computational materials science was born due to the development of computers. It has been more than 20 years so far. It seems to have broad prospects, but its actual development is very slow. It only plays an auxiliary role in theory and experiment, and can only be regarded as A relatively unpopular, under-appreciated sub-discipline.

In the final analysis, it is because it is too difficult to implement and the accuracy rate is too low.

First of all, it needs to have a deep understanding of the theoretical knowledge related to chemical and physical materials, and must also master the experimental methods and manufacturing processes. At least one must understand how the experimental data is obtained and how it will change. The most important Yes, it requires a high level of mathematics. According to the above-mentioned knowledge, the data can be converted into a mathematical model, and then it needs to be programmed to write a program that can run before it can be simulated by a computer.

This is only the first step. After that, the mathematical model must be revised and optimized repeatedly based on the experimental data, and then the design and manufacturing process of the material, or the characteristics of the material, the reaction process, etc., can be deduced to provide reference for the experiment, etc. Wait.

Among other things, mathematical modeling alone involves the establishment of kinematic equations, state equations, structural evolution equations, differential equations, and differential equations... It is also necessary to set various experimental and theoretical parameters such as temperature, humidity, and brightness. Ten parameters.

In addition, the most basic unit of material is "molecule", and molecular dynamics, particle interaction system, and algorithm of particle ensemble motion equation are also used in mathematical modeling (at least master the common Villette algorithm and Gill's algorithm) , intermolecular potential, phase field dynamics, cellular automata methods, etc.

In short, if you want to be proficient in computational materials science, you must be proficient in the four major disciplines of physics, chemistry, mathematics, and computer science at the same time, and have extremely flexible thinking and extremely broad vision.

What's more, because the relevant mathematical modeling and programming are too troublesome, a small parameter error or a line of code is not written properly, which will make the final deduction result very different from the actual one, or even completely different.

With such a high requirement and such a low fault tolerance rate, who is willing to learn it?
(End of this chapter)