Scholar’s Starry Sea

The International College Student Physics Competition is an international top-level competition officially sponsored by the American Physics Society and the American Astronomical Society.

It does not have the preliminaries and rematches like the IPhO. The process is that all the universities in the world want to participate in the competition.

The only requirement is that members of the team must not have a bachelor's degree.

After reading the paper sent by Wu Bin, Lin Ganwang raised his eyes, shook his head and said: "To be honest, you are still going to participate in college competitions at your level. It is a bit bullying."

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Wu Bin replied after hearing: "I believe there are many good foreign players."

"You said yes." Lin Ganwang drank his saliva: "It is estimated that Director Jiang is sorry to let you You went to participate in CUPT to bully yourself, so you were allowed to fight foreigners."

"China Physics tournament?"

"en. "Lin Ganwang nodded, "For you like this For students who can publish "Science", the honor of domestic competitions is really not enough. Maybe they will be described as shameless by teachers of other schools. In addition, it is also estimated that you are worried that you will cast a psychological shadow on other outstanding college students in China."

"Cough..." Wu Bin gave a dry cough, "Professor, what you said is too exaggerated."

"Exaggerated?" Lin Ganwang took off his glasses and pointed to Wu Bin's article The paper said: "I feel a little dizzy about what you wrote about this paper!"

"Russian..." Hearing Lin Ganwang's sudden excitement, Wu Bin didn't know what to say.

And Lin Ganwang quickly put on his glasses again and restored the demeanor of the previous professor. Slowly he said: "I am very pleased that you have listened to my words and worked hard on the calculation materials. From this paper, you can see how hard you are this summer vacation, so your next topic is to prepare three-dimensional reduced graphene oxide?"

"Yes, this is an unexpected discovery in my experiment. , I found that graphene dispersion and nickel nitrate are precursors, and self-supporting three-dimensional reduced graphene oxide can be prepared by one-step hydrothermal method."

"Your thinking can really jump..." Lin Ganwang picked up a pen and tapped, "So after analyzing with X-ray diffraction and scanning electron microscopy, you found that nano-NiO particles can be uniformly dispersed on the surface of the three-dimensional porous graphene?"

"Yes." Wu Bin nodded.

"What about the quality ratio of GO, NI and H2O?"

"1:4." Wu Bin said, took a pen and wrote a string of data. Then hand it to Lin Ganwang.

"Um..." Lin Ganwang nodded, "This is a new road, but I think it can be done."

"Professor Lin, you can think so, that's very good ." Wu Bin said with a smile.

Looking at Wu Bin’s calm appearance, Lin Ganwang stroked his sparse hair, sighed then said, “You are already quite sure of this, and you still need me to come. Do you think?"

"Why, if I really have that confidence, where do I need to come to Professor Lin to help me see."

"Yes." Lin Ganwang nodded," I believe you once."

"Then put the paper aside, and talk about your current experience in computational materials."

"Experience?" Wu Bin waved his hand: " I just chose Teacher Lai’s class, how dare I talk about what I learned."

"Don’t talk about that, I don’t know what level of you are? It’s boring to be humble, you know?" Lin Ganwang Decisively, a sharp eye glanced at Wu Bin.

In fact, Wu Bin is really not humble. For computational materials science, because he has not studied systematically, in fact, many branch details are not clear, but he has carefully studied the piece he needs. , But now Lin Ganwang obviously doesn't plan to let him go so easily.

So Wu Bin had to think about it for a while and said: "I have read more papers on molecular dynamics and Monte Carlo methods. If you want to say something, just like Professor Lin, you and As I said, if you want to learn this course well, you must have a solid foundation in Quantum mechanics."

Lin Ganwang finished listening to nodded: "Do you know Quantum Chemistry?"

"Quantum Chemistry?" Wu Bin was stunned: "It's a little bit conceptual. It's a basic discipline that applies the basic principles and methods of Quantum mechanics to study Chemistry problems?"

"So what do you think Is there a connection between Computational Materials Science and Quantum Chemistry?"

"Russian, Professor Lin, that, I am studying Physics..."

To be honest, a Professor from Chemistry asked One of his Physics students raised such a question. Wu Bin really wanted to say, "You are embarrassing me, Fat Tiger!"

"Oh yes, you are from Physics, I almost forgot "Lin Ganwang patted the forehead, "As you get older, sometimes your brain gets a little messy."

From Lin Ganwang's slightly proud expression, Wu Bin always feels that he really is Making things difficult for yourself!

If you want to talk about the reason, it's probably because I almost couldn't understand the paper I wrote just now.

Pinching the bridge of his nose, Lin Ganwang smiled and said: "In fact, Physics and Chemistry have always had a lot in common. They are dedicated to studying the most subtle things, especially in materials science. In order to learn from each other, the reason why I asked you this question is to think you can get new inspiration from them."

Seriously, if it weren’t for the corners of Lin Ganwang’s lips from time to time, Wu Bin almost believed it! But in the end there was an awkward and polite smile and said: "I am very willing to listen to your teachings from Professor Lin."

"I can't talk about the teachings, we can communicate with each other." Lin Ganwang waved his hand. , "There are two kinds of calculations in materials science. Some people do solid material calculations, among which is included surface and catalysis, and mainly use density functional theory."

See Wu Bin nodded, Lin Ganwang Without further explanation, I went on to say: "The other part is the calculation of Quantum Chemistry. There are big differences in concepts and methods between these two groups."

"For example What?" Wu Bin asked curiously.

"In simple terms, computational materials science mainly deals with periodic crystals. Even on the surface, it only loses periodicity in one direction. This is achieved with a vacuum layer."

"Quantum Chemistry mainly deals with molecules."

Wu Bin thought about it after listening and said, "But in fact, both are essentially using Quantum mechanics for calculations, right?"

Lin Ganwang nodded: "Yes, so although there are some differences between them, there are still many similarities in general. Computational materials science is to obtain the electronic band structure as the main goal, while Quantum Chemistry is I hope to get information on the structure, bond energy, transition state and spectrum of the molecule."

……

Then until dinner, Lin Ganwang seemed to be pretending to be cool... …No, it should be said that it is almost clear, and then summed up and said to Wu Bin in general: "I hope you can learn about these two methods, and it will definitely help you."

"Okay, thank you Professor Lin." Wu Bin moved towards Lin Ganwang nodded of plentiful harvest and left the office.

PS: Why is the holiday so short! (Weeping bitter tears like)