Chapter 414: Why did you return to China?
Xu You knew that Huang Sibai had been in Shanghai recently, and it was actually quite difficult for him to come to Jijing University.
"I'm fine recently, and I happen to have to go back to the head office, so I came to see you." Huang Sibai said with a smile.
After hearing what Huang Sibai said, Xu You finally felt relieved of his psychological burden.
After asking a few simple questions, Huang Sibai began to explain his recent achievements to Xu You in detail.
"Professor Xu, my recent research is on the 3D mask imaging technology of EUV lithography machines."
"Three-dimensional mask molding technology?" Xu You asked.
"Yes, Professor Xu. Three-dimensional mask imaging technology has a great impact on the quality of EUV lithography imaging. The three-dimensional mask imaging model is the basis for EUV lithography imaging simulation."
Simply put, the working principle of a photolithography machine is somewhat similar to that of a camera.
The light emitted by the photolithography machine can expose the thin film coated with photoresist through a mask with a pattern.
When photoresist is exposed to light, its properties change, allowing the pattern on the mask to be copied onto the wafer.
In this way, the sheet acts as an electronic circuit diagram.
However, unlike the two-dimensional imaging of a camera, the electronic components and circuit diagrams produced by a lithography machine are three-dimensional images.
This is the significance of Huang Sibai's achievement .
Listening to Huang Sibai's explanation, Xu You became more and more excited.
"Mr. Huang, have you brought the relevant information? Can I see more details?"
"Yes, Professor Xu, I brought it. Wait for me to turn on the computer."
It was also Huang Sibai's first time to have an academic exchange with Xu You, and he seemed a little nervous and excited.
Huang Sibai did not expect that Xu You would ask such detailed questions about academic issues that were not in his field.
Xu You's level of professionalism is even not inferior to those scientific researchers in the EUV lithography machine project team.
"Mr. Huang, the calculation of the mask diffraction spectrum here is obtained through Fourier transform, right?" Xu You asked, pointing to a place in the data.
"Yes, Professor Xu, when the mask thickness is small and the mask pattern size is large, the mask diffraction spectrum can be calculated using the thin mask model. Through Fourier transform, the result of the mask Kirchhoff far-field diffraction is obtained..."
"Mr. Huang, is the property of Hermitian symmetry used here?"
"That's right. To further improve the computational efficiency of the Hopkins imaging model, we can perform singular value decomposition of the TCC matrix based on its Hermitian symmetry and truncate the formula..."
In order to answer the questions raised by Xu You, Huang Sibai was already sweating profusely.
This feeling of tiredness is not due to physical exertion, but to the heavy exertion of mental energy.
However, Xu You enjoyed the learning process very much, with an expression of relaxation and joy on his face.
Now Xu You can easily solve various scientific research problems without entering the deep learning state.
For Xu You, the deep learning state is just an accelerator.
At this time, Huang Sibai wiped the sweat from his forehead and tried to ask:
"Professor Xu, can I get some information about the Loongson G1? This will be helpful for our research on lithography machines."
Xu You was stunned when he heard this and said, "Loongson G1? This chip does not use EUV lithography technology."
Huang Sibai quickly waved his hands and said, "No, no, it's just that our next generation of chips should be improved based on the Loongson G1. Knowing more about these chips will definitely be beneficial to the research and development of chip processing technology in the future."
What Huang Sibai said made some sense, but Xu You would definitely not take out such key information casually.
"Mr. Huang, I'm glad that you can take the initiative to learn this knowledge. This kind of enthusiasm in work is very worth promoting. Of course, information like this is not so easy to get. Let's talk about it later when we have a chance."
Xu You politely rejected Huang Sibai's request. Huang Sibai also saw what Xu You meant, and did not dare to say anything else, frowning slightly.
At this time, Xu You noticed that Huang Sibai's expression was a little strange.
This is some micro-expression analysis that Xu You learned from Lu Zhiyao. Lu Zhiyao is not only good at philosophy, but also has some achievements in psychology.
Xu You could tell from Huang Sibai's micro-expressions that Huang Sibai seemed somewhat reluctant to his rejection.
This kind of reaction is not what should happen in normal circumstances or in this situation.
"Mr. Huang, why didn't you continue working at ASML?" Xu You suddenly asked.
"Well... maybe I still want to go back to China. I've been abroad for so many years, but I've never really found a sense of belonging. Just when I had this opportunity, I decided to return to China."
According to Huang Sibai's resume, he has been studying abroad since middle school.
If China had not made such rapid progress in science and technology in recent years, it would probably be difficult to attract outstanding researchers like Huang Sibai to return.
Seeing that Huang Sibai didn't want to talk too much about his experiences, Xu You stopped asking.
"Okay, Mr. Huang, I won't bother you any more. This result is really good. I hope you can make more excellent results and let us have the first independently developed EUV lithography machine as soon as possible."
"OK, Professor Xu, I will definitely continue to work hard. If possible, I also hope that I can take on a more important role in the company."
Xu You naturally hopes that researchers like Huang Sibai, who have experience working in leading overseas technology companies, can take on more difficult tasks.
But at present, Huang Sibai has just joined the company for a few months and needs more time to observe.
"Don't worry, we will keep an eye on everything. We will definitely let truly capable people lead the research and development of the project."
After Huang Sibai left, Xu You closed his eyes and sorted out everything that had just happened.
Less than a minute later.
Xu You took out his internal communication device and called Wu Jing.
After a few beeps, the call was connected.
"Mom, is it convenient to talk now?"
"Convenient. What's the matter?"
"Have the identities of those researchers who returned to China through the 'Overseas Talent Program' been strictly verified?"
"The identities have been verified, and the information must be true. But they have been overseas for at least a few years , and we have no idea what they have experienced during this time. Why, did you find anything suspicious?"
"It's not really a suspicious point, it just feels a little weird, but I can't be sure."
Xu You told Wu Jing what had just happened and his own speculations.
