Tech Hammer

With the development of new materials science, it has become a modern composite subject, or an interdisciplinary subject.

For example, no matter which direction you are engaged in materials science research, you must master the most basic mathematics, and advanced mathematics is a compulsory course. For example, functional thinking is closely related to the research of magnetic materials; chemical knowledge must also be mastered, and materials science laboratories must pass various chemistry courses. Methods are used to prepare various raw materials; physics is the most important. After all, materials cannot be separated from various tests of their physical properties...

In addition, new materials science also needs to be researched with the help of various advanced instruments, and all data must rely on computers to calculate, simulate, etc. In short, when learning materials, you may not need to master every subject, but you must know something about each subject, especially at the PhD stage, where you have been in the laboratory for a long time, various materials laboratory preparation methods, analysis The methods have been trained and become instinctive.

This time Academician Tan came to the Institute of Mathematics. To put it bluntly, he wanted to use the Institute's theoretical knowledge of mathematics to try to solve the problems that may be encountered in the carbon nanotube project and give the project team a direction to adjust the experimental plan.

Ning Wei thought so at first, so the task he gave to Yue Yue was actually similar. As long as he found out where the problem was and told Senior Brother Zhang, he could complete the task, and Yue Yue's abilities were tempered.

Ning Wei even considered that he would spend some time every day studying the data with March, trying to find out the problem by analyzing the data, and finally verify his ideas with March's ideas and use them to understand As an artificial intelligence product, March is about how to think about and use mathematical tools to complete such mathematical analysis problems.

However, I never expected that March directly skipped the mathematical analysis process and directly established a material mathematical model in an ideal mode by simulating laboratory material preparation. Based on the simulation experiment data, the new material mathematical model was The indicators, especially the PF value indicator, directly exceeded the original model by about twice. Not only that, the ZT value finally measured, which is the thermoelectric figure of merit, is more than three times that of the traditional inorganic p-type tellurium materials mentioned by Brother Zhang.

Yes, March provided a double-walled carbon nanotube sample directly through simulation preparation. According to the simulation method given in March, in addition to the previous steps, samples 2 and 3 were fused, and the resulting carbon nanotubes were The tubes are first dissolved in chlorosulfonic acid, creating spin doping. The paint is then filtered and extruded into a coagulant. Finally, the solidified fibers are collected on a rotating drum.

According to simulation analysis in March, the carbon nanotubes in the solution-spun fiber produced have a high aspect ratio and low impurity density, and are highly crystallized, so they have excellent mechanical strength and electrical properties while maintaining high flexibility.

According to the final report automatically generated in March, the tensile strength of this carbon nanotube material reaches 4.2 ± 0.2GPa, the electrical performance is σ \u003e 10 milliseconds M1, and the PF value can reach 14 ± 5 ​​megawatts M1 . K2, are far better than the previously proposed material model.

This is of course a good thing, but what gives Ningwei a headache is how he should give this result to Senior Brother Zhang.

To put it simply, the purpose of people looking for him was to find out possible problems through mathematical calculations, and then they would reorganize the experiment. However, March directly solved the problem through repeated simulation tests. However, Ning Wei cannot guarantee that this effect can be perfectly achieved in a real laboratory environment according to the simulation test method given in March. After all, the system simulation test can completely ignore various unexpected situations in the laboratory.

In fact, computer simulation has been widely used in materials science. For example, specialized molecular dynamics simulation software can often explain experimental mechanisms and predict experiments; and combined with first principles software can calculate the atomic scale properties of materials; or Software such as uspex and Calypso can predict the structure of materials, including the models previously determined by the laboratory, which are most likely built using this software.

However, the nature of the above computer simulation is fundamentally different from the simulation calculation method used in March. The former simulates calculation results based on tasks set by humans, while the latter is close to thinking and solving problems directly from a human perspective.

This even made Ning Wei not know how to explain to Senior Brother Zhang how he solved this problem.

Because March’s ideas in the original process did not have any reference value, and could even be understood as a laboratory coincidence. So Ning Wei now has two choices in front of him. One is to deduce the entire mathematical analysis process based on the results given in March, and then leave the mathematical analysis process to Senior Brother Zhang and let them redesign the laboratory preparation plan;

The second is to go directly to the laboratory and ask Senior Brother Zhang to restart the experiment. He will give the entire experimental process and method, and let the project team complete it again according to the plan given in March, and then use this method to detect the results in March. Whether the final material model and report are correct.

Although the former method is suspected of taking off your pants and farting, it is relatively reasonable; the latter method depends on Senior Brother Zhang's trust in him. After all, he restarted the laboratory without any reason, and all he spent was money and energy. It also wastes a lot of materials. It is estimated that the preparation of these carbon nanomaterials that meet the specifications is not cheap...

"March, March! What are you saying? I put so much effort into sorting out data for you, making tables, and teaching you all kinds of mathematical analysis methods. Is this how you complete the tasks I assigned you? Can you stop showing off? Do you have to be so smart? Although I know you are not an ordinary cat, you are making things difficult for me! Why don't we just do things according to the routine?" Ning Wei muttered to Yue Yue.

Although he said it was a headache, in fact, deep down in his heart, he was more happy. His joy at March's growth, if nothing else, was enough to prove that he had continuously supplemented March's main program for more than half a year and understood artificial intelligence through existing theories. At least it's absolutely correct in the direction. Although March's thinking mode is still very different from that of humans. For example, March cannot fully understand the richness of human emotions and can only simulate simple emotions, but it can actually solve problems through some human-like thinking modes.

"Meow..." Sanyue yelled, then got up, stared at Ning Wei with wise eyes for two seconds, then turned around, turned his butt towards Ning Wei, changed his position and lay on the ground again.

This milk cat has become bolder!

Ning Wei suddenly raised his head: "Turn around, or I will throw you back into the notebook right now. Do you believe it or not?"

"Meow... meow... ow..." Yue Yue kicked his hind legs in frustration, then lay on the ground, moved half a circle bit by bit, and straightened up again, at least You can see its little face.

"Tell me, you have only been able to understand words for a few days, and now you start to have rebellious emotions? How can you do this?"

Ning Wei was complaining, but he opened the main program of March in his hand, and found the fear tag from the emotion folder. All emotions defined as fear are in charge here, and they will be automatically recorded and processed by the adversarial autoencoder. feedback.

Well, according to the ROC curve fed back by the system, there has been a clear fluctuation just now. This probably proves that March does have the perception of fear. This makes Ning Wei very happy. The child knows that fear is a good thing.

However, when he adjusted the ROC curve for a longer time, he discovered another problem. Under the emotional representation controlled by fear, the impact on March was obviously decreasing. He couldn't remember the first time he threatened Xiao Sanyue, but at that time the main program had not been updated and there was no record. After the main program had just been updated, Ning asked Sanyue to calculate a simple math problem and saw that it gave has threatened to cut the computing resources at its disposal.

The data from that time showed that the peak of fear's emotion in March was significantly higher than this time. In other words, the child's response to this threat in March will most likely become smaller and smaller, until it is very likely that it will be completely useless in the end.

"March, to be honest, are you afraid of me?" Ning Wei asked again.

"Meow..." The kitten licked its paws and ignored him.

Well, as expected, educating children has never been an easy job. Ning Wei gave up and continued to fight with Yue Yue. He looked at the time and saw that it was only 11:30 in the evening. He thought that Senior Brother Zhang was still awake, so he decided to leave the choice to This hard-working material science senior.

If Senior Brother Zhang trusted him enough and was not afraid of waste, he would not be too lazy to take off his pants and fart, restore the entire mathematical process again, and then ask this Senior Brother to re-formulate the experimental steps, and go directly to the laboratory tomorrow for guidance. The group of people in the laboratory conducted a complete preparation and test; if Brother Zhang did not dare to take risks, then just do useless work. Anyway, with the ready-made data, it will not take too long to perform mathematical inferences.

Thinking about it at this point, Senior Brother Zhang should still be asleep...

…

In fact, Zhang Yancheng was already asleep when the phone rang.

His nerves had been tense for a long time, but he finally got rid of the problem temporarily, so he climbed into bed early today. I would rather think that it doesn't matter whether there is a result over there. The most important thing is to let everyone calm down their tense emotions first.

Of course, it does not mean that they can relax for a week after making an appointment with Ning Wei to get the results. They still have to do some calculations that they usually do, and the data still have to be collected. It is impossible to completely leave the pot to Ning Wei and just ignore it. I asked, but at least I don’t have to stay up late every night to stare at the results.

He was then awakened from his sleep by the ringing of his phone.

According to the general situation analysis, it is never a good thing to receive a call in the middle of the night. After all, it is time for the scammer to rest at this point. Even if he does not rest, he should enjoy life. How can he work overtime every day until this time?

So after being woken up, Zhang Yancheng almost jumped out of bed, and then found his cell phone. He calmed down after seeing the caller number. Fortunately, it was not the boss's phone number at home.

But at this moment, Ning Wei suddenly received a call...

With doubts, Zhang Yancheng answered the phone.

"Hey, Mr. Ning, don't say you have solved the problem?"

"Huh? How does Senior Brother Zhang know? It's almost right, but it depends on whether you dare to take a gamble."

"A gamble?" Zhang Yancheng was stunned.

"Yes, if you believe me, prepare the materials tomorrow according to the idea I designed for you, and then you can test them by yourself. If you think my idea is not credible, then wait a few days and I will give you an answer. Mathematics report.”

"No, Ning Wei, I don't quite understand what you mean..."

"It's very simple. I know where the problem lies, and I'm about 90% sure. You can give me an email later, and I'll send you the new theoretical material model first. If you think you can do it, Try it in the same way, I will go to the laboratory tomorrow. If you think it is not reliable, just wait for two days. It depends on what you think."

"How about I take a look at your model first?"

"Okay! Then give me your email address and I'll send it to you."

"Okay, let's chat on WeChat later."

…

After hanging up the phone, Zhang Yancheng felt not sleepy at all.

Although Ning Wei's speed was so fast that he couldn't believe it, but thinking that Ning Wei seemed to have no reason to tease him, he decided to find out what was going on, so he immediately put on some clothes and started to get out of bed.

The roommate in the room was still burning the midnight oil, so it wasn’t surprising to see Zhang Yancheng answer the phone and not fall asleep. Everyone had the same experience. He just glanced at it and then asked: "The boss gave me another call." Have you arranged a mission?"

"No, the foreign aid I told you said there was a result."

"Huh? Sharpshooters don't have that kind of speed, right?"

"Who knows, let's take a look first." Zhang Yancheng answered with his head lowered. He had already sent his email address to Ning Wei as quickly as possible.

"No, what I mean is, Lao Zhang, if someone solves the problem in just a long time, have you ever thought about it? This means a problem." The roommate put down the book in his hand and said.

Zhang Yancheng raised his head, looked at his roommate and asked, "What's the problem?"

"You may not be suitable for materials research! Hahaha..." the roommate said unceremoniously.

"I..." Zhang Yancheng wanted to refute, but suddenly found that he couldn't find a reason.

In fact, it makes sense. After all, Ning Wei is studying for a PhD in mathematics. How could he solve the problem that has troubled them for a long time so quickly? Is there any royal law like this?

"It's not certain yet. People don't say they are 100% sure."

Zhang Yancheng said casually, and then turned on the computer. As soon as he logged in to the mailbox, a message was sent on WeChat with an "OK" expression.

He didn't let him wait long. After refreshing, a new unread email was lying in the mailbox.

I clicked on the email, downloaded the attachment, and opened it with the software. The moment I saw the model results and report, Zhang Yancheng was stunned.

My mind is filled with all kinds of ridiculous ideas...

For example, I just wanted to build an anti-aircraft gun, but you threw me a Dongfeng Express suit?

After reacting, Zhang Yancheng immediately replied on WeChat: "Are you kidding me?"