Chapter 247 Another verbal battle with scholars?

A few days later.

An internal meeting of Huaxin Alliance initiated by Lin Xiao is about to be held.

As the chairman of the board of directors and chief scientist of Huaxin Alliance, Lin Xiao has full authority to convene this meeting if there is something important.

Of course, the meeting was well attended. Basically, everyone who had time to attend came to attend. Various institutions and companies in Huaxin Alliance also sent people to attend.

Without him, their industry had just suffered another blow from abroad. Although it was only a blow to the light source and photomask, it still made everyone feel a feeling of death.

One is an important component of the lithography machine, and the other is an important consumable for lithography, especially the photomask, which is particularly important. After all, the full name of the lithography machine is called a mask alignment exposure machine, and the mask is Among them, it occupies a core position, but now they cannot make masks domestically. In the future, masks can only be imported from abroad. Although this was basically the case before, the share of domestic losses is real. , which is equivalent to saying that the money is made by foreign countries.

Therefore, such a meeting gives them a place to talk and seek peace of mind from allies.

There were dozens of people sitting in the conference room. Most of them had sad faces, especially those who could produce photomasks. The only one who looked a little happy in the room was the photoelectric company. Of course, Yu Jiancheng, the general manager of Shanghai Silicon Industry who came to attend the meeting, was not worried. After all, they did not have to worry about being sanctioned. The core technology was their own, so of course there was no need to worry.

However, the two of them looked so relaxed, which still attracted the attention of others.

"Academician Luo, I really envy your Institute of Optoelectronics."

The person sitting next to Luo Gangxian couldn't help but say, this is an academician from the Changchun Institute of Optics and Mechanics, his name is Wang Jun.

"What's there to envy?"

Luo Gangxian spread his hands and said with a smile: "Everyone is working for the country, there is nothing to envy or not."

Wang Jun said: "Your polishing technology is now comparable to that of Zeiss. It's awesome."

"It's all Professor Lin Xiao's fault. I didn't play any role." Luo Gangxian shook his head and said, "The most important thing is that in the past, I could be called the top polishing master in the country based on my experience. But now Professor Lin just came up with a theory casually, and my experience and so on were of no use. The ion beam was directed wherever it hit, without my judgment at all."

Speaking of this, Luo Gangxian added: "Of course, the most important thing is Professor Lin Xiao's eight-point structure encoder. Without this thing, the accuracy will not be improved, and we have nothing to do. But when it comes to this, what are you afraid of? You should be more grateful to Professor Lin Xiao, right? Without Professor Lin Xiao, your servo motors would probably still have a problem, right?"

"Yes, but for this reason, we hope to get help from Professor Lin Xiao." Wang Jun spread his hands and said: "I am engaged in semiconductor high-power laser technology, and now they are challenging us in the light source. There are restrictions. Now our laboratory can only use the previous things for research. The power of the EUV light source we are currently experimenting with is less than 40W. Now the excimer laser has been restricted again. Now we have to study the excimer laser from scratch. Alas, It’s difficult.”

"Haha, maybe Professor Lin met with us this time just to solve this problem? After all, when he met with us two weeks ago, it happened to be the time when foreign countries announced increased sanctions."

"I hope so."

Wang Jun shook his head.

At this moment, several people came in at the door, and the leader among them was Lin Xiao.

After Lin Xiao entered the conference room, he came to the first place and said: "I have kept everyone waiting for a long time. Since everyone is basically here, let's not talk nonsense. This internal meeting has officially begun. This is also my first time. Call this internal meeting.”

He smiled slightly and then said: "Then this meeting will mainly discuss our future semiconductor development direction under the new sanctions."

After hearing Lin Xiao's words, everyone present brightened up and immediately became serious. For those present, a backbone was needed at this time to let them see the hope of success.

Seeing the reaction of the people present, Lin Xiao smiled, and then without any hesitation, he directly gave them the news: "I think we should abandon the path of EUV lithography machines."

Everyone present, who had been looking forward to it just now, was stunned when they heard the news.

What?

Give up the path of EUV lithography machine?

Are you going to break the jar?

People present could not understand Lin Xiao's decision.

An older person in the industry who seemed to have higher qualifications immediately expressed doubts: "Professor Lin, I have no objection to your suggestion, but the path of EUV lithography has been proven to be right. If we If we give up, where should we develop?”

Others also nodded, and some people also said: "We have to stop making chips, right? Or go to carbon-based chips? No one said that carbon-based chips don't need photolithography machines!"

"Unless we can develop double-digit nanometer-level printing technology, we can only engage in subtractive manufacturing and not additive manufacturing. Chips can all be realized."

The people present are basically scientists, and they all have a lot of knowledge about these technical issues, such as carbon-based chips.

The so-called carbon-based chips can bypass lithography machines is actually just a rumor from the media. Any student who studies lithography technology will know that carbon-based chips are not inferior to silicon-based chips, and no scientist has ever shown that light is not needed. Engraving machine, the main advantage of carbon-based chips lies in the advantages of carbon-based materials over silicon-based materials. The performance of carbon-based chips of the same specification can far exceed that of silicon-based materials, which can be increased by about 5-10 times, and the power consumption can also be improved. reduced to one-tenth of its original value.

The issue of power consumption is a key issue in the chip industry. How to solve the high power consumption problem of low-process chips is a very critical issue. This is the main issue limiting the development of chips, such as AlphaGo playing chess with Go champions. At that time, AlphaGo's power consumption was as high as 20,000W. Such high power consumption was all provided for chip operations.

So carbon-based chips are good, but there are still many problems in how to prepare them.

As for 3D printing technology, it is even more impossible to manufacture chips through this additive manufacturing method. It will take at least many years of development to achieve double-digit nanometer level. The current accuracy is Only in the micron range.

That’s why the people present had such a huge reaction to Lin Xiao’s decision to give up EUV lithography.

When Lin Xiao saw the experts in front of him like this, he just smiled slightly.

It seems that there is going to be another war of words among the Confucian scholars.

Of course, come on.

Then, he said: "Everyone, I know all the difficulties you mentioned. Of course, I have never said that I would develop carbon-based chips or any atomic printing technology."

"But achieving overtaking in corners is a direction we must consider."

Speaking of this, he paused and said: "Foreign countries have long occupied the field of EUV and DUV lithography and imposed various sanctions on us, and they also relied on the patents in their hands to impose various suppressions on us. And we want to catch up in this straight line and catch up with them, which is full of difficulties.”

"Also, as there is a saying, who can't speed up in a straight line? Faster corners are really fast."

"So, while we are exerting our strength in a straight line, foreign countries are also exerting their strength along this straight line, so we cannot give up the opportunity to overtake in corners. At least in corners, there are not many foreign countries who are ahead of us, but if we Foreign countries have also overtaken us at corners, and in the future, we will have to lag behind for who knows how many years.”

Listening to Lin Xiao's words, everyone present nodded silently.

They all agreed very much with Lin Xiao's words.

Those who lag behind will always lag behind. It is very difficult to catch up. Although there are examples of TBMs in the past, there are still too few such examples.

Therefore, they can only catch up and even surpass themselves by looking for technical corners.

"Professor Lin, tell me, what do you want to do?"

Someone raised their hand and said.

Others also looked at Lin Xiao. As long as it was reasonable, they were willing to work hard.

Lin Xiao smiled and said: "What I want to do is to develop a photolithography technology that already exists, but has been ignored by us in the past."

"X-ray engraving!"

The people below suddenly became agitated, with expressions of surprise on their faces.

Lin Xiao knew what they wanted to say. Of course everyone present knew the advantages and disadvantages of X-ray as a light source. They were all in the industry.

Then, Lin Xiao just pressed his hands to make them all quiet down, and then said: "We all know the advantages and disadvantages of X-ray lithography machines. The advantages are good collimation, no diffraction effect, and there is no need to worry about the power of the light source. No It requires a mask, but its disadvantage is that it is too penetrating and cannot be used for mass production, resulting in poor economic benefits."

"So what we need to solve now is mass production."

"As for mass production, I already have a feasible solution."

When Lin Xiao said this, everyone present was stunned.

Using X-rays to achieve mass production?

How to do?

"My plan is to use the X-ray diffraction effect of crystals to amplify and reduce X-rays."

As soon as Lin Xiao finished speaking, he immediately stretched out his hand and pressed it, because he also knew how much surprise he would bring to the people present after saying these words. In fact, the people present did get angry because of his words. Became restless.

Good guy, you have said that the advantage of X-rays is that there is no diffraction effect, but now you want to let others diffract?

Although if it can really amplify and reduce X-rays, it will be of great help. They can even build you a lithography machine on the spot, because the X-ray lithography machine can abandon the EUV lithography machine. Many of the problems that need to be overcome can be achieved in the simplest way, especially since they now have more precise servo motors and have kept up with foreign countries in terms of mechanical accuracy.

But the question is how do you do it?

Lin Xiao did not speak this time, but took out his computer and began to show his PPT to the people present.

"Controlling the diffraction of X-rays requires us to control the diffraction, which means we have to find the laws of diffraction. Then, next we have to involve the theory of quantum mechanics."

Having said this, Lin Xiao stood up, came to the projection screen, and said: "It may involve some academic words, please forgive me."

"According to the Huygens-Fresnel principle, we can correctly explain and calculate the propagation of waves, and the Huygens-Fresnel principle can be regarded as a consequence of the isotropy of space, and in quantum electrodynamics, The isotropy of space is a key foundation."

[dψ(r)=-ψ0e^(ikr′)K(χ)dS/λRr′……]

"So, we can start from this step."

…

Most of the people below were stunned.

Why did you start teaching them a lesson even if they didn't agree with each other?

Everyone present was dumbfounded at this time.

There are many scientists here, but not every scientist understands quantum mechanics.

Not to mention quantum electrodynamics.

For example, Yu Jiancheng is just a general manager. He also studied materials before. How can he understand these things?

Just seeing the first few formulas, he felt like he was back in college when he was dominated by physics and mathematics.

Finally, he gave up and turned to look at his colleagues next to him. He had already taken out his mobile phone and started playing mahjong. The cards seemed to be quite good, with a rhythm of thirteen points.

Yu Jiancheng patted his head. What was he thinking? He said, "Don't you read what Professor Lin said?"

"Do you understand?" the man asked back.

"Uh, I don't understand." Yu Jiancheng spread his hands and asked: "Didn't Professor Lin say that it involves some academic language? Why do I feel that all he said is academic language?"

"What is a point? It is obviously a point of 100 million, the 100 million that is ten thousand times ten thousand."

Yu Jiancheng: "..."

Of course, there are still scientists who can understand the people present, especially there are many experts who study optics. For example, Academician Wang Jun of Changchun Institute of Optics and Mechanics, he also studies optical things, and he is very knowledgeable about diffraction interference and so on. can understand.

He frowned and listened to Lin Xiao's story. Lin Xiao's argument was profound and simple. Although it involved quantum mechanics, including quantum electrodynamics, he had some research on these.

The only thing that made him feel a little complicated was the formulas Lin Xiao got from the calculations.

Although his mathematical ability is much better than others, compared to Lin Xiao, it is obviously not good, and can even be said to be weak.

Of course, fortunately, Lin Xiao gave a complete description of his formulas and other things, and did not skip directly using words such as "obvious" and "well-known".

Therefore, Wang Jun can still understand it as long as he follows the train of thought.

As Lin Xiao spoke more and more deeply, his eyes suddenly lit up.

It seems that this is really a method that can explain the nature of diffraction? !