Scholar’s Starry Sea

There are currently two most widely used methods of computational materials science.

The first is to combine experimental data, establish a Mathematics model and then through numerical calculations to simulate and reproduce the actual process, and then repeatedly modify the previous Mathematics model to achieve a certain Physics interpretation, focusing on experimental research and applicability .

The second is computational simulation, that is, for specific materials, specific Physics mechanisms or reaction mechanisms, directly through theoretical models and numerical calculations, predict, design or modify the structure and performance of materials, focusing on theoretical research And predictability.

Wu Bin read an article about calculating the elastic constants of two-dimensional materials when reading the literature before. The content was about fitting the energy-volume curve.

Their laboratory can calculate the elastic constant of two-dimensional materials with IBRION=6 and ISIF=3, but after reading this, Wu Bin found that graphene has too many units of elastic constant. Some literature assumes that graphite The effective thickness of the alkene is 0.34 nm, and the Yang Clan modulus is about 1 TPa.

But there are second Rank reciprocals like 60eV, as well as 345Nm, 350GPa*nm and so on.

So calculating the elastic constants of two-dimensional materials has become a new topic for Wu Bin, although on the surface, this research does not help him solve the problem of mass production of graphene.

But he firmly believes that as long as he understands a little more about two-dimensional materials, there will always be a shining point that is enough to become the basis of his theory.

In addition, Lin Ziqi also had plentiful harvest this month. I don't know if it is because the theoretical foundation has reached saturation, or because of the long-term influence of Wu Bin, her experimental hands-on ability suddenly got a breakthrough improvement.

For example, the night before yesterday, she excitedly called Wu Bin to the laboratory, and turned a picture into a sound signal on the spot, and then added the oscilloscope to display the picture on the oscilloscope come out.

Wu Bin was very nodded after reading it, and commented on "If you put it 80 years ago, you would definitely be a talent for making TV sets."

He said that It is not to encourage exaggeration, but I really feel that Lin Ziqi can use the simplest old-fashioned electronic oscilloscope equipment to demonstrate the principle of the TV, which can be said to be quite powerful.

The praised Lin Ziqi also seemed very happy.

2nd day Feng golden brilliance said after hearing this: “The laboratory has always been a place where you can find out what people are suitable for. It’s a shame not to study engineering because of this hands-on ability. Of course, it’s okay to do theory."

This incident can be said to have greatly stimulated Lin Ziqi’s enthusiasm for scientific research. The time to go to the library in the morning They have been mentioned a lot in advance.

Because the total funding of Professor Liu's project is quite abundant, some small research funding when Wu Bin is studying graphene can only be applied to Feng golden brilliance for a hint, the highlight is a rich and imposing!

Of course, this is the result of Professor Liu's years of credit accumulation. As for the credit, what is it? That is giving money, you can give something, this is credibility!

Be aware that there are no shortage of experimenters in all parts of the world who have broken their legs for funding. They don’t do a few experiments all year round. They have to talk to all kinds of investors. You can let a man in science do it. This matter is really a bit difficult.

And Professor Liu also told him that from the next semester, if he joins a project of a tutor, he can be paid, and it is not a dead salary, which will be determined according to the workload.

Currently, 15% of the application funds of major colleges and universities are usually used as graduate labor fees. For example, your group has a total funding of 800,000 yuan, of which 120,000 is the labor fee for graduate students. Of course , How the money will be distributed in the end, it is the boss who has the final say.

When you change to a general undergraduate, you basically follow the rules of doing miscellaneous work, and pay monthly wages. As for the amount of money... All sorry said, at most it counts as a meal allowance.

However, Wu Bin is a bit special. His knowledge is so extensive that one person is an army, and his enthusiasm for scientific research is extremely high. For some experiments that don’t need to collect a lot of data, he really doesn’t need it. What kind of helper can be done by yourself.

Wu Bin, who put in the new experiment, immediately entered the mode of no distraction, full of experimental data, until ten o’clock in the evening when he was hungry and couldn’t concentrate, he rubbed his eyes and soaked a bowl of fresh food. Shrimp and fish pan noodles.

Wu Bin was eating noodles. By the way, he glanced at his phone and found that Pei Jiamin on WeChat had sent him a message at noon.

[Congratulations, why don’t you send a major event like "Science" to the classmates to say something, right? 】

Wu Bin took a mouthful of instant noodles after reading it, and returned one.

【Low-key, low-key. 】

I was about to put down my phone after posting, but found that Pei Jiamin responded in seconds.

[You are too low-key! ]

[Do you know that I know what your mood is about publishing "Science" through my dad...]

Bad guy: [Well...what's your mood? ]

Pei Mimi: [...]

[Cheers to our false friendship. ]

Unscrupulous people: [...]

[Not so...]

Pei Mimi: [What is worth celebrating should not be with friends Share it? ]

Unscrupulous person: [Okay, my pot, I will notify you next time. ]

Pei Mimi: [Bookworm is Bookworm. Are you planning to publish "Science" next time? 】

It seems that he is more satisfied with Wu Bin's confession, so Pei Jiamin stopped pursuing it and started a joke.

Unscrupulous people: [It is also possible to post "Nature"~]

Pei Mimi: [Awesome, to be honest... Actually, "Science" is still after my dad told me After searching for it, I found out what level of journal this is. Do you feel like you are going to become a great scientist in the future? ]

Unscrupulous people: [Who knows what will happen in the future, but I should continue on the road of scientific research. ]

Pei Mimi: [Well, I should also be on the road of medicine. ]

Unscrupulous person: [Come on, I believe that one day I will see your article on "cell". ]

Pei Mimi: [Dare to think, dare not to think. ]

[Then I will go to bed first, so don’t try too hard. ]

The bad guy: [Ok, good night. 】

Putting down the phone, Wu Bin started to eat noodles to save energy for the whole night.

……

On Monday, Wu Bin went back to the bedroom to take a shower. As soon as he approached the door, he heard a sound similar to a guitar, but it was a little different.

Pushing open the door, Wu Bin glanced at the bedroom, and immediately found the source of the sound, Li Yan holding a small guitar.

"en!? When do you know how to play the guitar?" Wu Bin asked in surprise.

"Just learned." Li Yan played a note, "Besides, don't be such a layman, OK? This is called Ukulele, not guitar."

"You Kerry...? No wonder the sound is different." Wu Bin said, looking for a change of underwear.

"It’s a drop. Although it looks very similar, it’s actually two instruments with completely different styles. Let me play a song I just learned about "Castle in the Sky". Listen."

PS: I added more to the little brother of Erha, thanks for your support~