Chapter 228 of the Science Fiction World of Academic Masters, Pang Xuelin smiled slightly and was prepared for the problems Wan Yi said.

"Professor Wan, that is a conventional method of carbon nanotube growth. For example, we use the size of the catalyst to control the pipe diameter of single-wall carbon nanotubes, and achieve the growth of ultra-long carbon nanotubes by extending the service life of the catalyst, and changing the growth atmosphere to achieve metal semiconductor control of single-wall carbon nanotubes, etc.."

"However, we now have a complete ultra-high purity single-wall carbon nanotube preparation method. The single-wall carbon nanotubes prepared through this method are basically the same as the length of the tube. What we need to do is to use some special physical and chemical methods to effectively connect these micron-level single-wall carbon nanotubes to be prepared under macroscopic conditions..."

"By special physical and chemical methods, these single-walled carbon nanotubes are connected?"

Everyone present couldn't help but look at each other.

This is a very novel term.

One reason why the academic community cannot prepare carbon nanotube fibers on a large scale is that the control and preparation of ultra-high purity single-wall carbon nanotube structure has not been achieved.

This problem was solved by Pang Xuelin's paper on Nature not long ago.

The second problem is that it is impossible to combine fine structural control of carbon nanotubes with macro-preparation.

In fact, in some top universities, trace high-purity single-wall carbon nanotubes can be prepared, with the output reaching up to gram level and the highest purity is close to 99.5%.

Although it is not comparable to the 99.99999% of electronic-grade single-wall carbon nanotubes prepared by Pang Xuelin, it has become a very important breakthrough in this field.

However, once these carbon nanotubes are prepared in large quantities and their yields are increased, the purity of single-wall carbon nanotubes will drop rapidly to about 95%.

Pang Xuelin's paper not only can produce 99.99999% ultra-high purity carbon nanotubes, but also can achieve mass production in kilogram-level laboratory.

These two points are enough to make Jiangcheng University's Carbon Nanomaterial Research Center a top carbon nanomaterial research institution in the world.

It was precisely through such a breakthrough that Pang Xuelin could surpass Li Changqing and serve as the director of the Carbon Nanomaterials Research Center of Jiangcheng University.

"Professor Pang, how confident are you?"

Wan Yi looked at Pang Xuelin Dao without blinking.

This was his first time working with Pang Xuelin. Although he had heard that Pang Xuelin was very magical before, this time Pang Xuelin came up and drew a big cake for everyone, which still made him feel a little uneasy.

Pang Xuelin laughed and said, "Any 80% or 90%. If I'm not sure, why would I spend tens of millions to ask everyone to help customize the reaction black box? This is my father's money..."

After he said this, everyone in the conference room couldn't help but laugh.

Only then did they remember that Pang Xuelin was not only the leader of this research, but also the investor of this research.

Pang Xuelin smiled and said, "Okay, next, I will explain the specific operation methods to you through the form of a slide!"

As he said that, Pang Xuelin opened the projector in the office and connected to his laptop.

...

Time passes minute by minute.

One morning, I quickly spent it through Pang Xuelin's explanation.

It was not until twelve:30 noon that Pang Xuelin's slide was halfway through.

Pang Xuelin simply asked someone to order takeout to deliver it to the conference room, and finished the meal directly in the conference room, continuing the explanation just now.

It was not until three o'clock in the afternoon that Pang Xuelin basically explained the entire reaction principle and process.

"That's about the general process of the entire experiment. Do you have any questions?"

Pang Xuelin looked at the people in the conference room and said.

At this time, Huo Ziqian said: "Professor Pang, you just said that by extending the constant temperature range of carbon nanotube growth, the effective life of the catalyst is extended. However, as far as I know, the cobalt-molybdenum catalysts commonly used at present are not very long under the temperature conditions you mentioned, and our reaction is carried out in a black box. There is no way to manually intervene during the reaction. How do you ensure that the service life of the catalyst is extended?"

Pang Xuelin smiled and said: "It's very simple. We can use ferritin as a precursor for preparing cobalt-molybdenum catalysts, and it is expected that the minimum time can be extended by more than ten times. In addition, because the ferritin size is single, we can also effectively control the growth direction of carbon nanotubes through ferritin..."

Yu Ansheng said: "Professor Pang, how do we control the vertical array of carbon nanotube growth?"

Pang Xuelin smiled slightly: "With water vapor, we can add water vapor to the reaction black box. The existence of water vapor can effectively achieve vertical growth of carbon nanotube bundles."

"How should we control the final chiral structure of carbon nanotubes?"

Someone asked again.

Pang Xuelin said: "In fact, whether it is geometric structure control or conductive property control, it will eventually be a problem of chiral structure control of carbon nanotubes. Since the catalyst and carbon nanotube directly share an interface, the core of fine structure control of carbon nanotubes lies in the design of the catalyst. I believe everyone has found that the reaction black box is divided into two parts in total, and we can use high melting point tungsten carbide or molybdenum carbide as solid catalysts..."

...

Time passes by minute by minute, questions come one after another, but no matter how tricky the angle of the problem is, Pang Xuelin can always use clever methods to answer it.

Everyone also questioned this plan from the beginning and gradually became accepted.

Finally, Ye Xingmin, who had not made any noise before, said: "Professor Pang, according to your idea, our reaction process cannot be manually intervened. We can only allow the reaction black box to be automatically executed under the control of the computer, but what about the computer's control program? We have no idea about this reaction. If we want to design a relatively complete control program, we must collect enough data. In addition, if we build a mathematical model, it requires supercomputing support. In this way, whether it is funding or time, the span will probably be longer."

Everyone immediately reacted.

At present, according to the plan designed by Pang Xuelin, the previous budget was 50 million rmb, and now nearly half of it has been spent. Whether the remaining funds can be supported for so long is probably a problem.

Pang Xuelin laughed and said, "Don't worry, I've done the mathematical model."

"Are the mathematical model done?"

Everyone couldn't help but be shocked.

Wan Yi said: "Professor Pang, how did you do it without actual data support?"

Pang Xuelin looked at everyone and said, "Is this difficult? Computational chemistry! Deduce the entire reaction process based on first principles, but what I am now giving is only a theoretical mathematical model, but I can't guarantee whether it fits with the actual operation time."

After Pang Xuelin said this, everyone immediately reacted.

Computational chemistry is a branch of theoretical chemistry. Its main purpose is to use effective mathematical approximation and computer programs to calculate the properties of molecules, such as total energy, dipole moment, quadrupole moment, vibration frequency, reaction activity, etc., and to explain some specific chemical problems.

However, to do this, it is very demanding on the mathematical literacy of a chemist or materials scientist.

Even in the entire Jiangda University, Academician Xiao Wenbai from the School of Chemical Engineering has such a level.

Everyone did not expect that Pang Xuelin could do this.

However, thinking about his identity as a mathematician, everyone felt relieved.

This is a real big shot in the mathematics world, and it seems that it is really not difficult to do this.

...

After determining the overall experimental ideas and plans, the rest of the work was left to Wanyi and the others.

A week later, Pang Xuelin and Yao Bingxia boarded the plane to Germany together.

Pang Xuelin had long promised Schultz that if he had time, he went to Bonn University for academic exchanges.

As a result, there was not much free time in the whole first half of the year. Finally, it was a long time to wait for the summer vacation that the Carbon Nanomaterials Center was established. After he straightened out these things, it was already August.

August is the hottest time of the year in Jiangcheng. The maximum temperature during the day is nearly 40 degrees. If you go out every day, you can apply sunscreen with an umbrella, it will be enough to peel people off.

On the contrary, Germany has passed the hottest time of the year, and the highest temperature is only twenty-seven or eight degrees.

After arriving in Bonn, Pang Xuelin received a warm reception from Schultz and gave a speech at the University of Bonn. As a result, top German universities such as Munich University of Technology, Heidelberg University, and Göttingen University sent invitations one after another.

I even knew that Pang Xuelin had come to Europe, and universities in several countries near Germany, such as ETH Zurich, Lund University in Sweden, and Paris Higher Normal University in France, also sent invitations to Pang Xuelin.

Pang Xuelin was reluctant, so he had to choose several universities and give a report.

Throughout August, Pang Xuelin spent his speeches around Europe, and met Faltings in the middle.

When Faltings knew that Pang Xuelin had been working on carbon nanomaterials recently, he was slightly disappointed and warned Pang Xuelin that he hoped that he would not waste his talent and would not be able to chew too much, so he might as well focus on mathematics.

Pang Xuelin just smiled at this. He naturally understood the truth that he could not chew too much. The problem was that he was different from ordinary scientists.

After binding the science fiction world adventure system, recreating the technology drawn from the plane world in the real world is the meaning of his work.

During this month, in addition to attending academic speeches everywhere, Pang Xuelin also accompanied Yao Bingxia to visit some well-known attractions in Europe.

The Alps, Kings Lake, Neuschwanstein Castle, Hallstatt and other places all left their footprints.

In addition, when he was giving a speech at ETH Zurich, Pang Xuelin took a special time to visit the CERN, which is a holy place for physicists.
Chapter completed!