Chapter 252 The Youngest Academician of the Two Academies [Subscription Request]

"The gallium nitride active phased array radar developed by our laboratory has been experimentally verified in terms of high power density, efficiency and wide bandwidth."

"It can be confirmed that compared with traditional active phased array radar, gallium nitride can exert stronger performance."

Zhang Guangyi stood in the laboratory, looking quite excited, and introduced the relevant research results to Xu Yuan.

It can be clearly seen that he has high hopes for gallium nitride radar.

But soon he seemed to have thought of something, and his face was suddenly filled with regret.

He sighed and looked at Xu Yuan and said:
"However, the gallium nitride technology mastered in China is very limited. There are many unresolved problems in the material growth substrate, which makes the yield rate very low and the cost is high, making it difficult to mass produce. If we want to install gallium nitride radar, we must solve this problem and reduce the cost price of gallium nitride materials."

Having said this, he did not stop talking immediately, but continued speaking from the bottom of his heart.

"I know you have done extensive research on active phased array radars."

"And I've become famous in the field of materials, so I wanted to ask you for help to see if I can optimize gallium nitride technology."

At this point, Zhang Guangyi did not keep anyone in suspense and directly expressed his true thoughts.

After he finished speaking, his eyes were fixed on Xu Yuan, with a hint of expectation in his eyes.

Even the other researchers at the scene were waiting for Xu Yuan's answer.

Obviously they all have full trust in Xu Yuan.

Although it feels good to be highly expected by others, the pressure is also enormous.

Hearing this, Xu Yuan's expression became complicated, and he didn't know what to say.

It is true that he has done some research in the field of materials, but he has never come into contact with this kind of semiconductor material.

Whether it can help is still unknown.

In addition, he does know something about gallium nitride technology, the most important of which is the growth and substrate process stages.

Among them, the substrate is the foundation of the entire industrial chain.

As the substrate material for the epitaxial film growth of GaN material, the most suitable one is naturally GaN itself. The epitaxial growth of homogeneous materials can fundamentally solve the lattice mismatch and thermal mismatch problems encountered when using heterogeneous substrate materials.

Minimize the stress caused by differences in properties between materials during the growth process.

Capable of growing gallium nitride epitaxial films of unparalleled high quality on heterogeneous substrates.

However, due to the slow growth of gallium nitride single crystals, the crystals are difficult to grow and the cost is relatively high.

The commonly used gallium nitride substrate material at present is not gallium nitride single crystal.

However, heterogeneous substrates will face new technical difficulties and problems are very likely to occur during the growth process.

Cannot meet the requirements for device manufacturing.

Just thinking about it, you can see that it is very difficult to solve the problem.

However, since Xu Yuan was invited, he couldn't just refuse directly. That would obviously be inappropriate.

Thoughts raced through my mind, and I made a decision immediately, thinking that since I was already here, I might as well give it a try.

After all, if we can really optimize gallium nitride technology, it can also make a very great contribution to the development of the domestic semiconductor materials industry.

Of course, before that, there are some things that need to be made clear.

"Academician Zhang."

"You have given me a big problem this time. Gallium nitride technology has these problems all over the world."

"It is indeed a big problem, but among the people I know, you are the one with the greatest hope of success." Zhang Guangyi took over Xu Yuan's words and said with a smile.

It seemed as if he didn't want to see Xu Yuan refuse.

At this time, Xu Yuan said truthfully: "I can try it first, but there is no way to give any guarantees."

Zhang Guangyi, who was originally nervous, instantly smiled when he heard Xu Yuan's answer.

I felt much more relaxed.

He quickly stepped forward and held Xu Yuan's hand, expressing his gratitude.

"Just your words are enough. Feel free to tell me the rest of the requirements." He immediately patted his chest and made the promise.

If they want to come up with gallium nitride radar as soon as possible, they must first solve the problems in gallium nitride technology. Otherwise, if they wait patiently for technological innovation in the industry, it is unknown how long it will take before domestic fighter jets and ground vehicles can be equipped with more powerful gallium nitride radars.

In this situation, it is necessary to promote the research of gallium nitride technology.

Looking at so many experts in related fields in China, none is as suitable as Xu Yuan to be the driving force.

no way.

Who made Xu Yuan have so many scientific research achievements that can be checked at any time?

In the following time, Xu Yuan, Zhang Guangyi and several researchers exchanged a few words.

Then he brought up the matter again.

Xu Yuan originally wanted to start working right away, but was stopped by Zhang Guangyi in the end.

According to them, it is almost time for dinner.

There's no rush for this moment.

After hearing this, Xu Yuan thought about it and felt that there was nothing wrong with it, so he simply agreed to the proposal.

In addition, he asked Zhang Guangyi to prepare relevant materials in advance, especially domestic and foreign literature on gallium nitride technology, hoping to generate inspiration from them.

Of course, the most important point is that he is relatively weak in this area.

Learning additional knowledge is definitely unavoidable.

However, it is not impossible to successfully optimize gallium nitride technology with the help of the panel progress bar.

Mainly, this gives him the possibility of unlimited trial and error, and he can find the most correct way to grow gallium nitride in the shortest time compared to others.

That was why he agreed to Zhang Guangyi.

-

In the next two months, Xu Yuan's trips between Yanjing and Jinling increased significantly.

In addition to finding ways to collect information and literature about gallium nitride technology.

I also consulted experts in the semiconductor field of the Institute of Materials to improve my level in this area.

As for the effect, it is naturally very significant.

After specifically selecting the appropriate substrate material for the experiment, you can see that the panel progress bar has increased.

Although the experimental results were not very satisfactory, they gave Xu Yuan a lot of confidence.

Basically, just continue the experiment like this, and it won’t take too long before the progress bar reaches 100%.

By then, the existing problems in the gallium nitride growth substrate process will be effectively improved.

Speaking of which, Xu Yuan was also quite looking forward to it.

I want to see what amazing effects the domestically-made stealth fighter will have after being equipped with a gallium nitride active phased array radar.

Especially when such a gallium nitride radar fighter is announced, what kind of impact will it have on the world.

While Xu Yuan was busy, in August, Zhao Xiang was finally ready.

After leading the team to Berlin several times to dock with the storage ring, we have finally completed all the preliminary work and can officially start the steady-state micro-bunch verification.

Although Xu Yuan was not present at the storage ring in person, he was able to follow it online.

Witness together the successful verification of the steady-state micro-bunching concept.

That afternoon, in a study room in Yanjing, Xu Yuan was sitting in front of the computer.

The person on the screen was Zhao Xiang who was far away in Berlin.

It happened to be their daughter’s second birthday, so Xu Yuan and Chen Yuran stayed at home to accompany the child.

Zhao Xiang on the screen had already put on a lab coat, but he still couldn't hide the excitement on his face.

But it’s normal when you think about it.

For a scientific researcher, proposing a concept is not a very impressive thing.

The key is whether this concept can be realized and whether it has value for the development of science.

His steady-state micro-bunching was able to complete the preliminary preparations so quickly, and all that was left was the final experimental verification. How could he not be excited at this moment?

The key point is that both Mr. Yang and Xu Yuan have high opinions on his steady-state microbunching.

It is believed that it can play an important role in many fields.

"We are about to go in and conduct verification. It is a pity that you can't come."

Xu Yuan listened to what Zhao Xiang said, raised the corners of his mouth and smiled as he replied: "Whether I am on the scene or not, it will not affect the success of today's verification." This was to give Zhao Xiang some reassurance.

Of course, he was not talking nonsense. With the progress bar on the panel, it was basically certain that the verification would be successful.

After listening to Xu Yuan's words, the smile on Zhao Xiang's face became visibly wider.

"With your words, I feel much more at ease."

After a final conversation, Zhao Xiang temporarily ended the video call after saying that he would notify the verification results as soon as possible.

The main thing is to use other people's storage rings, and the relevant requirements and regulations must be strictly followed.

It is impossible to keep the video connection open during the experiment.

Looking at the screen indicating that the call had ended, Xu Yuan continued to study gallium nitride technical information.

Sitting in the study, waiting for good news from Zhao Xiang.

at the same time.

After Zhao Xiang closed the laptop screen, he turned around and said to the two assistants who were accompanying him:
"Get ready, it will be our turn for the experiment soon."

"Don't worry, Professor Zhao, we are ready." The two assistants responded immediately in unison.

His face was full of excitement.

And so they soon arrived at the laboratory.

Since the laser system had been set up long ago, Zhao Xiang started the laser with a wavelength of 1064 nanometers and successfully controlled the electron beam in the storage ring in Berlin, allowing the electron beam to form a fine microstructure after circling the ring for a full circle.

That is micro bunching.

The microbunch then radiates high-intensity, narrow-bandwidth coherent light at the laser wavelength and its higher harmonics.

Although the entire experimental process did not take too long, it was necessary to wait for the verification results to come out.

During this process, the person who was most anxious must be Zhao Xiang.

He couldn't stop moving and paced back and forth in the laboratory. He hoped that his steady-state micro-bunching concept would be successfully verified, but he was also worried that the data would eventually be invalid.

If this is true, it means that all the previous efforts of their entire team have been in vain.

The key is that I have betrayed the trust of Mr. Yang and Xu Yuan.

After waiting for almost half an hour, Zhao Xiang finally heard the excited voice of his assistant.

"Professor Zhao, the experimental results are out."

"Bring it here quickly."

He responded subconsciously at first, then took a step forward and walked towards the assistant.

After taking the experimental results from the other party, he immediately set his eyes on the document.

His originally nervous expression was instantly replaced by joy and excitement after he saw the report information and data in the document.

I couldn't help but mutter to myself, "The formation of microbunches proves that the optical phase of electrons can be correlated with each other with an accuracy shorter than the laser wavelength, so that electrons can be stably confined in the optical potential well formed by the laser."

"Our concept of steady-state microbunching holds true."

After the assistant next to him received the test report, his first reaction was to hand the results to Zhao Xiang as soon as possible.

So I don’t know what’s inside.

It was not until they heard Zhao Xiang's words that they stopped enduring and finally expressed the joy in their hearts.

“We verified it successfully.”

"From the results, the working mechanism of steady-state micro-bunching is feasible, which can provide a new solution for the breakthrough of high-power extreme ultraviolet light sources."

As members of the Steady-State Microbunching Concept project team, we are all aware of the value behind it.

In the field of extreme ultraviolet light sources alone, it is possible to solve the current difficulties facing the industry.

At this time, Zhao Xiang also reacted quickly. In addition to instructing the two of them to finish the follow-up work as soon as possible and return to Yanjing, he did not forget what he had just said.

I contacted Xu Yuan in time and told him the good news.

In any case, Xu Yuan did not personally participate in today's verification.

But it played a significant role in the early projects, otherwise they would not have been able to enter the verification stage so quickly.

In his heart, Xu Yuan is naturally also a core member of the project.

You must know the result first.

Although before the experimental verification, Xu Yuan was more confident than him, as if he had already predicted it.

And this is exactly the case. When Xu Yuan learned from Zhao Xiang that the concept of steady-state micro-bunching had been successfully verified, apart from a slight smile on his face, he was happy for the other party, but he was very calm in his heart and was not surprised at all.

In the end, the conversation between the two lasted only more than a minute, and Zhao Xiang hung up in a hurry.

Obviously, all his thoughts at this moment are on returning home.

Now that the concept of steady-state microbunching has been successfully verified, it means that there is great potential and value in continuing research.

But this is inseparable from the energy storage ring accelerator, and even requires a more advanced high-energy synchrotron radiation device.

Under such circumstances, it is definitely impossible to continue to borrow overseas storage rings to conduct experiments, because in the end it would basically be equivalent to sharing technology with the other party.

This is obviously unacceptable.

Therefore, building a high-energy synchrotron radiation facility in China has become a very important scientific research project.

It needs to be put on the agenda as soon as possible.

However, Zhao Xiang also understood that the scientific research funds and site scale required to build such an advanced high-energy synchrotron radiation device can be considered relatively large numbers.

Whether we can convince the higher authorities to approve it is still a question that needs to be considered.

Therefore, Zhao Xiang could only place his hopes on Mr. Yang.

After all, from the very beginning, Mr. Yang attached great importance to his concept of steady-state microbunching.

Five years after the idea was first proposed, the project was officially launched and Xu Yuan was even specially invited to join.

This shows that Mr. Yang hopes to see further research on this concept.

This concept has not been verified before, and it is impossible to determine whether it has high potential and high value. Naturally, the country cannot rashly approve funds to build a domestic high-energy synchrotron radiation light source device.

But the situation is completely different now.

The concept has been successfully verified, proving its potential and research value. Therefore, building a high-energy synchrotron radiation light source device has become a very natural thing.

At most, there are some details that still need to be discussed seriously with Mr. Yang.

This is also the reason why Zhao Xiang is eager to return to Yanjing.

……

a few days later.

Zhao Xiang returned safely from Berlin and immediately went to the office on the second floor of the Science Museum with a detailed report on the test verification results.

He gave a detailed report to Mr. Yang and proposed the idea of ​​building a domestic high-energy synchrotron radiation light source device.

Mr. Yang did not express his opinion immediately, but instead called Xu Yuan over.

It is worth mentioning that Xu Yuan is undoubtedly optimistic about the development potential and prospects of steady-state microbunching, so he expressed his support on this matter.

It is believed that building a domestic high-energy synchrotron radiation light source device is indeed something that must be done.

And the final situation was basically the same as he expected.

Just over a month had passed when news suddenly came from above.

It was agreed to build a high-energy synchrotron radiation source facility in Yenching for the purpose of photon science research.

And it was made public online.

However, ordinary people do not know the role of high-energy synchrotron radiation light source devices, nor do they know what opportunities the successful verification of steady-state micro-beams can bring to the development of the domestic semiconductor industry.

Therefore, it did not even make it to the hot searches and was quickly overshadowed by new events on the Internet.

But after the end of October, the thing that most netizens are looking forward to is definitely the announcement of the new list of academicians.

Everyone knew that Xu Yuan was already a second-level senior professor of mathematics at Qinghua University.

He also won the Fields Medal in Mathematics.

After completely proving the Hodge conjecture last year, he won the Wolf Prize in Mathematics and the Abel Prize in Mathematics.

Successfully achieved the Grand Slam of world mathematics awards.

It has made the domestic mathematics community an authority in world mathematics.

In view of these achievements in the field of mathematics, even though Xu Yuan is only 30 years old, he is obviously qualified to be selected as an academician of the Academy of Sciences.

Therefore, before the Academy of Sciences announced the list of new academicians, the topic of whether Xu Yuan could be selected as an academician had already topped the Weibo hot search list.

It has aroused heated discussion among netizens.

Everyone expressed their opinions on this matter, and the vast majority of them believed that Xu Yuan should be elected as an academician.

"According to the time, the list of academicians should be announced in the next few days. I wonder if Professor Xu's name will be on it."

"Mr. Xu has brought such great honor to the domestic mathematics community. It should be a foregone conclusion that he will be selected as an academician of the Academy of Sciences. I believe that the country will pay great attention to such top talents."

"Congratulations in advance to Professor Xu. From now on, you should address him as Academician Xu."

"I remember that Professor Xu seems to be only 30 years old this year. If he is really elected, he will break the age record of academicians in our country."

“Not to mention in China, I’m afraid you won’t find another one like it anywhere else in the world.”

"How enviable!"

"Others were elected as academicians of the Academy of Sciences at the age of 30, but at the age of 30 I could still pick up a stick and run to the bushes to play for a long time."

"The gap between people is really too big, but if Professor Xu is elected as an academician of the Academy of Sciences, then I can only say that he deserves it."

"I don't think there is much hope. It is true that Professor Xu has made so many achievements in mathematics, but he is still too young. I guess he will have to wait another two years before he can be elected as an academician."

"Anyway, the list will probably be out in the next two days. Everyone will know when they see it."

……

Perhaps the Academy of Sciences noticed the online public opinion and was very efficient in announcing the list of new academicians.

Almost as soon as November began, the list of new academicians was officially announced.

2015 11 Month 3 Day.

on Tuesday.

Today can definitely be called a special day for our country.

It may even appear in textbooks in the future.

It was only because for the first time in the history of domestic academicians, there appeared an academician who was only thirty years old.

It's about ten o'clock in the morning.

As the Academy of Sciences took the lead in announcing the list, major media also reposted and reported it.

In a very short period of time, it topped the hot search lists of major website platforms.

It has suddenly become the most discussed topic.

Because everyone successfully saw Xu Yuan's name on the list.

So they all went to Xu Yuan’s account to congratulate him and witness the birth of new history together.

"I saw Professor Xu's name. Professor Xu was really elected as an academician of the Academy of Sciences."

"I have witnessed history. I am the youngest academician in history."

“So exciting!”

"Luyang No. 1 Middle School sent a congratulatory message!"

“I suggest that elementary and middle school students write down this time, as it may be required in future exams.”

"I knew that Professor Xu would definitely be selected as an academician."

"Everyone should change the way you address each other. From now on, you should call him Academician Xu."

……

In everyone's mind, Xu Yuan has achieved so many achievements and has reached this point today with his own strength and talent.

Being selected as an academician is what he deserves and what the people want to see.

So the atmosphere on the Internet today is particularly harmonious, and everyone is immersed in this joy.

Although he was not the one who became the academician, he was happy and excited for Xu Yuan from the bottom of his heart, and was even more happy and proud than when he was an academician himself.

From this emotional point of view, it is like a fan seeing his favorite actor win an award and feeling excited and proud about it, even though Xu Yuan is an idol in many people's hearts.

Just when everyone's attention was focused on Xu Yuan's selection as an academician of the Academy of Sciences.

The Chinese Academy of Engineering also followed suit and released a list of new academicians.

After being forwarded by some official media, sharp-eyed netizens soon discovered it.

Xu Yuan's name is also on the list.

This makes many people feel confused.

Not sure what the situation is.

After all, everyone is thinking about Xu Yuan proving the Hodge conjecture and achieving the Grand Slam of world mathematics awards, so naturally he must be selected as a member of the Academy of Sciences.

I never thought there would be anything related to the Academy of Engineering.

Especially when everyone thinks of Xu Yuan’s outstanding achievements in the fields of aerospace and aviation.

I immediately realized that Xu Yuan was fully qualified to be selected as a member of the Academy of Engineering.

But after thinking about this matter thoroughly, many people couldn't help but gasp.

Being an academician of the Academy of Sciences at the age of 30 is already amazing. There hasn't been one in many years, and it is uncertain whether anyone will be able to compare with Xu Yuan in the future.

But now they are told that Xu Yuan is not only a member of the Academy of Sciences, but also a member of the Academy of Engineering.

When the news spread quickly, the number of active users on major domestic websites increased sharply, and it seemed as if they were about to be paralyzed.

(End of this chapter)