Military Industry of Great Powers: Build the Strongest Flanker

The scope of the briefing meeting was not large, and only deputy chief engineers and above from the 152 institutes of the Academy of Sciences could participate. Obviously, Director Liu Qing had his own considerations.

When Zhao Guoqing was rushed from the mountains to the magic city, the experts from the 152 Institute were dumbfounded and rubbed their eyes one by one.

"You read that right, this... is so young..."

"Younger than our children!"

"Didn't Xiao Zhao just graduate?"

"Incredible!"

Director Liu Qing also took a long breath in his heart. Although he was prepared, he was still shocked by Zhao Guoqing's young appearance.

Even Chief Engineer Zhao Zhongshu looked at Director Gao Changming with doubt on his face.

"Lao Gao, you're not kidding me, are you?"

Gao Changming was also helpless. The first time he saw Zhao Guoqing, he was almost like them. His jaw dropped in shock at that time, but he didn't know that the gallium nitride crystal that Zhao Guoqing was working on would have such a big impact.

In the lecture hall of Institute 152 of the Academy of Sciences, most of the dark seats under the rostrum were empty, except for a dozen people sitting in the front row.

Although they are all big names in science and industry across the country, Zhao Guoqing is not panicked at all. He looks natural, behaves appropriately, and speaks in a calm manner.

Director Liu Qing stepped forward, held Zhao Guoqing's hand and said with a smile: "National Day, welcome!"

"Thank you, Director Liu."

"How about, let's get started!"

"OK!"

Who said someone with a hairless mouth can't do things well? Zhao Guoqing calmly stepped onto the podium and turned on the microphone.

There are not many opportunities to communicate with these great masters at close range.

“Gallium nitride crystals are prone to decomposition at high temperatures, which makes it difficult for us to prepare gallium nitride crystals, but how to avoid it?

Gallium nitride is insoluble in water and soluble in alkali solution, but it will react slightly with water. This makes us encounter difficulties again with water as the medium!

In fact, from being insoluble in water to being soluble in alkali solution, it also opened my mind to whether there are positive and negative ion states that can allow gallium nitride to enter a dissolved state.

So I thought of ammonia. Under the action of a high-temperature electric field, ammonia can separate nitrogen and hydrogen tetrapositive ions, as well as nitrogen tetranegative ions..."

Zhao Guoqing introduced in detail the idea of ​​preparing gallium nitride crystals and the reasons for how to operate it. In fact, the ammonothermal method to produce single crystals takes into account quality and cost.

The purity of the single crystal produced is very high, but it also has the disadvantage of atomic dislocation, which may affect the yield rate of the semiconductor wafer.

This method can also be extended to the growth of epitaxial layers. Ammonia can be used as a protective gas to heat gallium nitride, produce gallium nitride vapor, and make epitaxial layers on p-level materials. This is also the industrial production of gallium nitride semiconductors. key……

"How is it?" Liu Qing asked Liang Zhujin in a low voice from the audience.

"I can't tell!"

Liu Qing didn't know much about professional stuff, so he was confused.

"Good or not!"

Liang Zhujin gave a wry smile and said, "I feel like I'm not qualified to comment!"

Condensed matter physics, mol chemistry, this guy knows a lot.

"What's the meaning?"

"Director Liu, it's a pity that Teacher Zhao is left in the mountains. Our Academy has several projects that are very suitable for Teacher Zhao to take the lead..."

"Teacher Zhao? Poaching?"

No matter what kind of evaluation you want, Liang Zhujin's attitude represents everything. Director Liu Qing looked at the experts beside him who had their eyes set higher than the sky, and took out their notebooks one by one to record. This attitude was the same as that of a teacher teaching students.

Even Zhao Zhongshu took out his notebook and kept recording.

It was the first time for him to hear some theories, and he felt that they would be helpful to his own research.

Gao Changming turned his head and looked around, then at Zhao Guoqing.

It’s crazy. A college student conquered these experts without any sense of disobedience.

Commander Wan Guozhong is even more like a devout believer.

"Why didn't I think of that?"

Their research team used a hydride crystallization method, which first reacted gallium with chlorine, and then reacted and crystallized gallium chloride with ammonia at high temperatures. The result was insufficient purity.

Director Liu Qing also knew that it didn't matter if he didn't understand, the most important thing was the atmosphere.

The report meeting lasted for more than three hours, and it was full of hard material, so that after the lecture was over, it felt like not much time had passed.

Director Liu Qing asked Liang Zhujin to arrange an office. He still wanted to talk to Zhao Guoqing about some matters.

"Xiao Zhao, Japan will spend one million US dollars to buy the gallium nitride crystal you synthesized. What do you think?"

This sudden news confused Zhao Guoqing. Is the little devil crazy? No matter how expensive a gallium nitride crystal is, can it be worth a million dollars?

Obviously...the premium is thousands of times higher.

"Sell, with one million US dollars in foreign exchange, you can buy a lot of things. It's best to get the equipment directly. Japanese ion implantation equipment, laser cutting equipment, high-precision spectrometers, and large computers, if you can buy them."

"Aren't you afraid of leaking secrets?"

Zhao Guoqing shook his head and said: "Rather than leaking secrets, we urgently need these equipments. By the way, there are also photolithography machines, Nikon's photolithography machines, if they are willing to sell them!"

Isn’t this all caused by lack of money? Moreover, domestic experimental equipment and technology are not up to par.

With large computers, high-capacity storage hard drives, based on Unix operating systems, and powerful computing capabilities, Zhao Guoqing can try to develop a piece of circuit logic auxiliary testing software. In this way, domestic EDA software is not far away.

In the military industry, it has a far-reaching impact. You must know that whether it is an active phased array or a passive phased array, a computer is required to calculate the emission direction and radiation, and to calculate the echo. Without a chip, it cannot be done at all.

Seeing that Director Liu Qing didn't speak, Zhao Guoqing added fuel to the fire.

"Director Liu, with these equipments, we can break through the Western technology blockade one by one, and this gallium nitride is not a new thing. High-purity gallium nitride can also be made in the West, but the cost is different!"

Liu Qing looked at Zhao Guoqing and said solemnly: "Xiao Zhao, you are so confident!"

Zhao Guoqing nodded. He didn't know how influential his words were, but he was just selling a crystal. It would be a pity not to sell it.

"Director Liu, this million dollars?"

Liu Qing smiled and said, "What, you have an idea too?"

Zhao Guoqing scratched his head and said, "I don't have any ideas. As I just said, I hope this million dollars can buy some equipment!"

"I know!" Liu Qing said: "This million US dollars can be used to purchase equipment, but Xiao Zhao, there is a game of chess across the country, and there are many units that are short of equipment. Can you understand this?"

"I understand!" Zhao Guoqing said with a smile: "I can give you half."

"half?"

Liu Qing smiled bitterly, the young man was thinking too much!

"One more thing, 14 institutions can give priority to the purchased equipment, Director Liu..."

"..."

Zhao Guoqing saw Director Liu Qing's somewhat surprised look and gave up.

"Director Liu, maybe you don't know that I didn't do gallium nitride just for the sake of doing gallium nitride?"

"Hmm...what do you mean?"

Gallium nitride crystal is just an additional product. He wants to make a light-emitting semiconductor. It is an industry worth tens of billions, which is enough for Director Liu Qing to pay attention to!