The Military-industrial Scientific Research System of the Academic Master Chapter 877

Chapter 877 Key Technology: Ultrashort Laser Processing

Time passes day by day.

After returning to work during the Spring Festival, before most people's holiday syndrome was completely eliminated, a shocking news suddenly came out in the field of composite materials—

A research team from China published a paper in the Nature journal. Based on the Boltzmann transport equation and lattice dynamics theory, they proposed an instantaneous laser-material interaction mechanism that is different from the traditional two-temperature model. The state thermoelastic model almost completely fits the processing of large-thickness CFRP plates by continuous laser sources.

Even more coincidentally, the corresponding author of this paper is Chang Haonan, who participated in proving the Poincaré conjecture last year, but then almost disappeared.

ˆ No one has heard of the first author in the past, but I think he should be a student in Chang Haonan's research group.

Obviously, he has not been living in seclusion for more than half a year.

Instead, he focused his energy on guiding students.

It is also cross-border guidance.

　　also directed a Nature…

Chun Chun is no longer a human being.

Therefore, whether it is for research purposes, out of curiosity, or simply to join in the fun of "a Chinese scholar published Nature".

In short, the popularity of this article was frighteningly high.

After the paper was officially accepted, Chang Haonan has been paying attention to research in related fields.

Especially arXiv.

As a preprint website, most of the papers that appear on it are actually of little value.

However, the amount of content published on it within a period of time is a small window that can make a big difference.

In the next week, the number of new entries related to composite materials processing surged by nearly 15%...

It can only be said that materials researchers should never doubt their sense of pursuit of hot topics.

This is exactly what Chang Haonan wants to see.

Amidst the high degree of enthusiasm, some research groups, even if their own research direction is ultrshort pulse laser, will most likely allocate some efforts to explore the direction of traditional continuous laser processing.

Or at least repeat the experiments in his paper.

And if a Nature article is not enough...

He also has a follow-up combination of punches.

So, as soon as the Lantern Festival was over, Chang Haonan went directly to Ding Gaoheng and applied to organize a symposium in the field of optoelectronics and materials physics in the name of the Science and Technology Committee.

The number of participants does not have to be too large, but it must be reliable enough.

In fact, when Ding Gaoheng heard the three words "symposium", he basically agreed in his heart -

The last time Chang Haonan made a similar request was about three years ago.

That China Aerospace Engine Industry Conference.

As for the result...

Everyone has seen it.

China's aviation industry has been directly introduced into a new era.

Although Chang Haonan said that the scale of this forum will definitely be much smaller than the last one, Ding Gaoheng is not greedy.

Even if he could achieve one-tenth of the effect, he would be very satisfied.

However, before finally nodding, Ding Gaoheng still confirmed it specifically:

“This symposium...what are you ultimately trying to achieve?”

After all, there is a difference between consent and agreement.

Chang Haonan's answer is straightforward:

“I discovered that ultrshort pulse laser can be used to perform precise cold processing on any electronically active material, and this is probably the most critical technology in the production and finalization process of the turbofan 10 engine.”

Ding Gaoheng's whole body tensed up instantly—

Are there any inheritance relationships among these studies co-authored by Chang Haonan?

Then there's nothing more to say.

Of course, I fully support it.

“Just tell me directly, which units are you going to include?”

Ding Gaoheng said as he took out a note from the side:

“We can give you 100% support for resources within the Science and Technology Commission system. As for resources outside the Science and Technology Commission, we will also try our best to fight for them!”

Since the other party asked this question, Chang Haonan was not polite and immediately took out the information he had prepared and handed it to the other party:

“First of all, it's the Haojing Institute of Optics and Mechanics. I checked some information and found that they are the only one in the country that can immediately come up with a picosecond-level pulse laser that meets my power requirements.”

“There is also the Institute of Applied Optics of Ordnance Industry Group, which has a relatively deep accumulation in the field of overall research and development of optoelectronic systems.”

“There is an Atomic Energy Science Research Institute under the Nuclear Industry Group, and the isotope research and isotope product production capabilities there should be the highest level in the country..."

Chang Haonan listed the names of nearly ten units in succession.

“In addition, if there are other researchers who specialize in these fields, they can join me as long as the background check is OK.”

Ding Gaoheng looked at the list in front of him and knew that this should be another big project.

The number of people is not large, but the number of institutions involved is no less than last time.

And a small half of them are in the Academy of Sciences system.

So it's quite tiring.

However, considering the bright future once successful...

Ding Gaoheng still nodded without hesitation.

The Commission of Science, Technology and Industry for National Defense is, after all, a military-industrial unit, and its efficiency is still lacking.

Although Ding Gaoheng did not dare to confirm at the time, in fact, even before the first month of the year, the units requested by Chang Haonan were sending people to the capital one after another. Especially the Haojing Institute of Optics and Mechanics, the first one he named and the most important among them, directly dispatched a team of 10 people led by Academician Hou Xun.

He even stated that Academician Hou's research team can pay the travel allowance by itself.

Although it doesn't cost much, the purpose of supporting the work is still in place.

Considering that the scale of this symposium is not large, it will not be held outside the capital like the previous aviation industry conference.

Instead, the meeting location was directly arranged in the large conference room on the top floor of the Aerospace Power Group.

The cards and the level of confidentiality are both maximized.

The meeting was chaired by Chang Haonan himself.

Now he no longer needs to introduce himself in detail.

So, after a very brief opening remarks, the symposium got down to business.

Although Ding Gaoheng did not publicly explain the details of the symposium convened by Chang Haonan in his previous report, everyone basically had a guess thanks to the Nature article.

It's just…

The direction of the guess was somewhat misled by Chang Haonan.

　For example, Hou Xun.

After the symposium officially started, as the only academician among the crowd, he naturally got the first one to speak.

“Professor Chang, are you gathering comrades together this time to initiate a continuous laser processing project in the name of the Aerospace Power Group?”

Hou Xun's voice was filled with obvious concern—

Of course it is not a study of Chang Haonan, but a study of Chang Haonan:

In fact, Academician Hou's main research direction in the past ten years has been ultrashort lasers, and he even advocated the establishment of a “National Key Laboratory of Transient Optics and Photonic Technology”.

The femtosecond laser that Chang Haonan is obsessed with is the product of this laboratory.

However, at the specific process level, there is still a long way to go before commercialization.

This is also a common problem faced by ultrshort laser processing around the world.

Therefore, when he saw the paper Chang Haonan published in Nature half a month ago, his first reaction was... panic.

Even though he has never met or worked with Chang Haonan in the past, Hou Xun has heard his name many times.

At the beginning, regarding those miraculous rumors, he generally had an attitude of not believing them.

But the time when Poincaré's conjecture was proved last year was really too influential.

I have no choice but to believe it.

After that, Academician Hou also gradually accepted the many deeds of Chang Haonan.

And such a magical person, he suddenly published a paper one day.

It's still Nature.

The content is completely opposite to the direction I am studying.

And it just so happens that my own research has not made any significant breakthrough for a long time...

Who is left alone?

It is precisely for this reason that when he heard that Chang Haonan was going to hold a symposium and possibly engage in projects related to laser processing, Academician Hou said he wanted to go without even thinking about it.

　　Even if you have to pay for it yourself, you have to go.

Have to argue with Chang Haonan.

Even if you lose, you must lose clearly.

To this end, he had prepared sufficient research materials before the meeting, and was ready to explain to the other party that the potential of pulse lasers was at least not weaker than continuous lasers.

Moreover, before asking the question just now, he was even mentally prepared for all the information to be turned into waste paper.

but…

Chang Haonan's answer was completely beyond his expectation:

“Academician Hou, we are indeed preparing to study related topics of laser drilling and laser cutting, and we are not doing it in a small way, but are finally preparing to achieve industrial production.”

“However, it can now be made clear to the comrades participating in the meeting that the specific technical solution is not a continuous laser source, but a picosecond or even femtosecond pulse laser source.”

As soon as Chang Haonan finished speaking, Academician Hou already said what he had prepared:

“Professor Chang, according to my research, pulse laser…”

"etc…"

It wasn't until halfway through the first sentence that the latter realized something was wrong...

“Professor Chang, you just said...that you are also planning to take the pulse laser source route?”

Chang Haonan nodded:

“That's right.”

Academician Hou, who was fully prepared mentally, only felt his scalp numb:

“But the paper you published at the beginning of the month was not...the mechanism of continuous laser..."

Hearing this, Chang Haonan showed a scheming smile:

“That...is used to mislead competitors.”

In an instant, the air in the entire venue almost froze.

Everyone's reaction was almost the same—

In order to mislead competitors, you published a Nature article?

Our main research directions have not been published in Nature?

After a moment of silence, Chang Haonan continued to speak:

"Judging from your reaction just now, Academician Hou, the effect of this misdirection... seems to be pretty good."

After finishing speaking, he raised his arm and lightly tapped the space bar of the laptop in front of him.

The theme of today's meeting was projected on the screen—

"Research on Ultrashort Pulse Laser Processing Technology for Special-shaped Air Film Holes in Aeroengines".

(End of this chapter)

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