Chapter 136: Lithography Machine

With Xiao Yang's experience, he could see at a glance that Qi Wei must have said something that he couldn't usually say before, and then looking at the appearance of having plucked up courage and flushed cheeks, Xiao Yang could even guess what Qi Wei wanted to say.

But now...

Well, the fight will be as it is.

If this kind of girl wants her to muster up the courage to say something again, it probably depends on luck.

Turning his head to look at the principal, Xiao Yang's eyes were full of resentment, this gaze was like a deep resentful woman, so that the principal couldn't help but stop and touch his nose, and then looked dazed.

But soon, the resentment in Xiao Yang's eyes disappeared, and he became a well-behaved three-good student in a second:

"Hello Headmaster!"

"Hehe, Xiao Yang, Qi Wei, let me introduce you. The principal also recovered instantly, although he felt that Xiao Yang's eyes must have some story, but he still didn't forget the business at hand, and he was in a hurry

Hurriedly pointed to the old scholar beside him with white hair:

"This is Dean Fu of Jinling University. ”

When the four-character signboard of Jinling University was played, even Xiao Yang couldn't help but be surprised, but after a while, he guessed the other party's intention, but he didn't show it, but shouted obediently:

"Hello Dean Fu!"

Qi Wei on the side also hurriedly greeted her, but there was something thoughtful in her eyes.

"Hehe, hello, hello, Ninghai is really a good place for a person. Fu Lihong smiled and praised and greeted.

He came to Ninghai on purpose, so naturally it was Xiao Yang, the champion.

Special move!

From Xiao Yang's "Letter Ten Years Later", Fu Lihong had already determined that he was going to recruit this student, but he never expected that after listening to Xiao Yang's speech today, Fu Lihong found that he had far underestimated this young man.

With such talents, the potential for the future is absolutely limitless!

He admires Xiao Yang very much.

Xiao Yang's letter ten years later, almost all of the country's layout and planning in science and technology in the next ten years, although it was not promoted to explain, but it can be seen that Xiao Yang has always understood this, and some of the professional knowledge involved is full of praise even after reading it.

What's more, his speech just now, the explanation and view of success, refreshed his cognition of students, this is not a student who reads dead books, but a student with his own ideas and plans, such students are always more powerful than those students who only know how to study hard.

His future is limitless!

Even, Fu Lihong suspects that this student may even achieve outstanding results in the field of scientific research in the future.

And when Fu Lihong admired Xiao Yang, Xiao Yang was actually secretly looking at Fu Lihong.

The name of this man scared him.

This is an authoritative figure in physics, and the physics major of Jinling University has always been the second in the country, and this school has produced countless physics masters. And Fu Lihong graduated from Jinling University with a major in physics, then served as a physics teaching assistant, and finally became the dean step by step.

More importantly, Xiao Yang knew that Fu Lihong had done a big thing eight years later.

65nm lithography machine technology!

Speaking of lithography machines, many people may not know what this thing is, but if you talk about another one, there are definitely many people who know.

Chip technology!

Whether it is military science and technology, aviation, mobile phones and computers, or even a remote control and remote control toys at home, chips need to be used.

But unfortunately, chip technology has always been a weakness in China, and it has even been sanctioned by overseas powers.

And how are chips made?

The first thing is to make the wafer, which is actually silica chlorination, distillation, slicing, and after cutting into slices, it is the silicon wafer we want.

After the wafer is made, the next step is to coat the surface of the wafer with a photoresist film, which can improve the oxidation resistance and temperature resistance of the wafer.

Really big head, in the back.

This is where the lithography machine plays an extremely vital role. After the coating of the wafer, ultraviolet light is irradiated to the wafer coating film using ultraviolet light through a reticle and a convex lens to soften it, and then it is dissolved and washed away with a solvent to expose the silicon under the film.

After that, an etching machine can be used to etch out N and P traps on the exposed silicon, and inject ions to form a PN junction, that is, a logic gate, and then make an upper metal connection circuit through chemical and physical meteorological precipitation.

Finally, there is wafer testing and packaging.

This is the general production process of a chip, now that we know the process, let's see what we can do about this small chip in China.

First of all, the first point is the material issue.

Silicon is judged by purity, and if there are a bunch of impurities in silicon, then electrons don't want to run smoothly between full orbit and empty orbit. At present, the world's solar-grade high-purity silicon requires 99.9999%, and more than half of the world's products are domestic, and it has long been played with the price of cabbage.

The electronic-grade high-purity silicon for high-end chips requires 99.99999999999%, almost all thanks to imports, and it was not until ten years later that Jinling's Xinhua company achieved mass production, but more than 75% of the high-purity silicon still relies on imports.

From the current point of view, high-purity silicon is completely dependent on imports in China.

Secondly, the second point is the technical level.

On high-end chips, hundreds of millions of devices are needed to form huge circuits, and in addition to the purity of silicon, sufficient precision instruments are also required.

And the first is the lithography machine.

The technology of the lithography machine is particularly important, the more precise the lithography machine technology, the more it can complete the complex process, and this is the biggest gap with the United States and other powerful countries.

Ordinary lithography machines can be developed in China, but the technology of high-precision lithography machines has been blocked by foreign countries, and even in this regard, China is actually lagging behind the technology of countries such as the United States for at least 20 years!

This backwardness, there are naturally problems at home, and more importantly, foreign countries have carried out a technological blockade of the Dragon Kingdom For this reason, the United States has come up with a shameless agreement such as the "Wassenaar Agreement", and even Tsarist Russia has signed this agreement, in order to restrict the development of domestic chip technology.

How shameless is this agreement?

At that time, Fu Lihong began to invest in the research and development of lithography machine technology, and eight years later, successfully broke through the 65nm lithography machine.

Similarly, at that time, the United States opened the blockade of the 65nm lithography machine to the country.

Even before Xiaoyang crossed, more sophisticated lithography machine technology still did not appear, but a 7nm lithography machine had already appeared in the Netherlands.

The name Fu Lihong was also obscured by the shameless operation of the United States.

But it is undeniable that this is a domestic scientist who is still striving for self-improvement under the blockade of the United States, a real scientific researcher, and an admirable figure.

And now, such a figure who has conquered the 65nm lithography machine in the future is in front of him.