Nodding, Liu Feng understood the problem encountered by Professor Jiang Yang.

The optical material developed by Professor Jiang is more appropriate, or the optical absorbing material.

The so-called optical absorbing materials refer to a class of materials that can absorb or greatly reduce the electromagnetic wave energy projected on its surface, thereby reducing the interference of electromagnetic waves, and are widely used in a new generation of stealth weapons such as aircraft, ships, and tanks, as well as various electronic diagnosis and treatment instruments and equipment such as hospitals and mobile phones.

In engineering applications, in addition to requiring absorbers to have a high absorption rate of electromagnetic waves in a wide frequency band, it is also required to have light weight, temperature resistance, humidity resistance, corrosion resistance and other properties.

Combined with the nature of Professor Jiang's military experts, the absorbing materials they studied are likely to be applied to weapons and equipment, so the design requirements are naturally a higher level.

"Is it still not up to the temperature adaptability?" asked Liu Feng with concern.

"That's right!" Professor Jiang replied in a casual tone, "The design requirements of the new composite absorbing material are to be able to maintain stable structural properties for at least 3 hours at a high temperature of 1500 degrees Celsius...... You must have guessed its usefulness, but it's not a secret now, not long ago, our new generation of fighters flew test, you should know, right?"

"The new generation of fighters, you mean the J-20?" Liu Feng said in surprise.

Although he had speculated about the purpose of Professor Jiang Yang's research on absorbing materials, stealth weapons were definitely the most likely possibility, but Liu Feng never expected that it would be used on J-20?

It stands to reason that the J-20 has already been test-flown and the stealth materials used in it should be determined, but I didn't expect it......

"That's right, it's the J-20," Professor Jiang said very proudly, but also very helplessly, "Now the whole world has known the news of the test flight of our new generation of Chinese stealth fighters, but they don't know which stealth method our fighters use! Because even our own country is still in a quarrel about this......

"What do you say?" Liu Feng stretched his neck, not realizing that he was spying on military secrets, very curious.

Professor Jiang glanced at Liu Feng and teased: "If it weren't for the fact that this matter is no longer a secret in the circle, Professor Liu, maybe you have been invited to tea by the people of the Security Bureau!"

Subsequently, regardless of Liu Feng's embarrassment, the old man smiled and continued: "The most important stealth method for fighters in the world today is nothing more than plasma stealth technology and anti-passive detection coating technology. ”

"For example, the F-117, B-2, F-22 and the latest F-35 of country M mainly use anti-passive detection coating technology, because they are very mature in this technology, and the principle is to paint the aircraft as a whole with a layer of stealth material to absorb electromagnetic waves and reduce radar reflection. ”

"But we are different in China, the technical accumulation of stealth material coating is not as good as that of M people, the effect of the developed invisible coating is unsatisfactory, and there are limitations in all aspects such as resistance and service life, plus the price of this coating is even more unbearable, therefore, there is a call in China to make more efforts in plasma stealth technology. ”

"Compared with the B-2, F-117, F-22 and other widely used shape and material stealth technology in country M, plasma stealth technology has a wide absorption frequency bandwidth, high absorption rate, good stealth effect, extremely simple to use and maintain, plus it has the advantages of long use time and low price, and there is no need to change the aerodynamic shape design of aircraft and other equipment, which will not only not affect the flight performance of the aircraft, but also reduce the flight resistance by more than 30%, so the call for this technology is very high!"

"Moreover, the most important thing is that the use of plasma stealth can reduce the probability of the weapon being discovered by 99%, and it can truly achieve 'full stealth'!"

Liu Feng was dumbfounded: "Doesn't that mean that this technology has the advantage of crushing compared to invisible materials?"

Professor Jiang smiled slightly, and said: "I can't say that, because the shortcomings of this technology are also very obvious! For example, the part where the plasma generator is installed on the weapon cannot be stealth, the power supply required is very high, the equipment is huge, and it is difficult to control, etc. In order to meet the requirements for the thickness of the plasma cladding, the power supply power of the plasma generator must be reduced and the volume of the equipment must be reduced, which makes the difficulty of this technology hundreds of times more difficult than that of stealth coatings!"

"Therefore, in a short period of time, if we want to overcome all these problems, I am afraid that it will not be possible, but in the case that our stealth materials are not very useful, the prospects of this technology are naturally very good......"

"Alas, it's also our side that doesn't give up, otherwise the final stealth method of the plane would have been determined a long time ago!Although, the other guys who study stealth materials are not much better......"

Regarding Professor Jiang's exclamation, Liu Feng was thoughtful.

It seems that the pressure on Professor Jiang's side is also very high!

Not only is it facing competition from other technical routes, but even its own internal competition is not small.

There is not only one kind of research on invisible materials, and whoever has a breakthrough first will have a greater say in the future!

This kind of healthy competition, no matter where it is placed, exists.

However, Liu Feng guessed that the final result of this matter is likely to be a combination of the two methods, after all, the J-20 also has its own time requirements, and it is impossible to completely wait until the plasma stealth technology is fully mature to equip it.

"Do you have any new ideas lately?"

"Recently, we got a method from the people of M, adding a lithium-cadmium ferrite coating with a thickness of 2.5mm~5mm to the coating of composite materials, and I heard that it can attenuate 8.5dB in the centimeter band, and can withstand high temperatures above 1500 degrees Celsius, so we plan to give it a try. As for the more specific technical details, I can't say more, signed a confidentiality agreement. If you are interested, you are welcome to join our team. Professor Jiang said with a smile.

"Forget it, if Academician Cui sees me go fishing, he will definitely not be happy. Liu Feng also smiled, hesitated for a moment, and said, "And, although I don't know how you got this method from the people of country M, to be honest, I don't think it's a good idea." ”

After considering the rhetoric in his mind, Liu Feng continued: "Besides, if this method is really that feasible, I'm afraid that it won't be so easy for us to get it!"

Although he has a lot of respect for those comrades who are in the shadows, and even the things of the M country guys can get their hands on it, it cannot be ruled out that this is a special means used by the people of M country to trap the Chinese country, and for those guys, Liu Feng has always used the most vicious thoughts to guess - there must be cowboys' ulterior secrets!

It was so easily obtained by the 'enemy country', which is very likely to be unreliable, and similar things have not happened before, such as the Star Wars program of country M, the manned moon landing program, etc., are all good things in spies.

Liu Feng doesn't know whether this method is feasible for the time being, but he knows that starting from his own calculation program, he can definitely develop high-end absorbing materials that far exceed the absorption performance of this material!

In other words, this kind of material of the people of country M has fallen behind, and there is absolutely no future for development.

BECAUSE, HE HAS ALREADY FOUND SEVERAL COMBINATIONS OF MATERIALS THAT CAN ATTENUATE AT LEAST 10DB OR MORE!

It's only 8.5dB, anyway, Liu Feng is absolutely unsightly.

Professor Jiang shook his head and said, "Whether it is feasible or not, we will use experiments to test, and it is not so easy for the people of country M to deceive us." ”

Hearing Professor Jiang say this, Liu Feng could only sigh softly.

It's better to let them hit the wall, otherwise how will they show his 'correctness' next?

After all, there are more things he can't reveal anymore, because these fixed programs he has developed are, in a way, far more important than these absorbing materials!

Moreover, even if you continue to talk about it, no one will believe it, but it will be easy to offend people.

What's more, there are many things that he can't explain clearly, and he still needs to do a lot of experimental verification, so he can only dilute them for the time being.

Out of the past, the reminders he can make can only go so far.

However, he didn't have to worry, when he later announced his own programs within a certain range, this kind of 'low-level' absorbing material would probably not be even eye-catching to Professor Jiang himself at that time!

At that time, the old man will naturally understand his good intentions.

……

Speaking of which, Liu Feng didn't have a very deep understanding of how profoundly influential these calculation programs he discovered and summarized in the study of materials science at first.

But he knew at least one thing was that these calculations would definitely change the way materials science was studied, such as ambient superconducting materials.

At the very least, once the bottleneck of the technical route limiting room temperature superconducting materials is broken, the entire related industry will benefit.

Whether it is antimatter engineering or controllable nuclear fusion tokamak devices, with the solution of the problem of room temperature superconductivity, many problems will be solved, and what was originally impossible can also be realized.

In particular, the use of renewable energy will greatly affect the existing energy utilization pattern of the world.

After all, one of the biggest challenges in the transition to green energy is how to deliver electricity from remote places to cities over distances of hundreds of kilometers.

The most advanced room temperature superconducting cable can transport electrical energy for thousands of kilometers with almost no energy loss.

There is no doubt that ambient superconducting materials will make the dream of a global power supply come true, and the sun in the Sahara Desert in Africa can power Western Europe through superconducting cables that cross the bottom of the Mediterranean.

It's just that after some communication with Professor Jiang, Liu Feng suddenly discovered that his new technology and new procedures can actually affect the research of the country's heavy equipment J-20, and further, other major heavy weapons such as spacecraft, aircraft carriers, and nuclear submarines can also benefit from this?

Although this is bound to touch the interests of some people.

For example, in the laboratory where these topics are done.

After all, the research of a room temperature superconducting material that can be applied in practice may only kill the most promising material research in related fields, but directly in the technical field of materials research has a guiding theoretical rule, and it may not only be the related research of several materials that has been killed, but the research projects that have invested hundreds of millions or even hundreds of billions of dollars, as well as the researchers who originally served this bowl of rice.

Especially for a country like Huaguo, which has lagged behind in the field of materials for decades, with these procedures, it can catch up with the leading edge accumulated by others for decades in a short period of time!

Doesn't this mean that those countries in Europe and the United States, who have invested their blood and sweat in these areas for decades, have suddenly become fool-like coolies?

When that really happens, those people will have to vomit blood!

Of course, Liu Feng could not hesitate because of this little matter, and even he was absolutely gloating - the registered material patent was still registered, and the published procedural theory was still correct.

If you have the ability, you will bite me?

And from another point of view, Huaguo has his own program theories, and those social resources that were originally wasted on basic research on materials can also be moved to other more potential scientific research projects with the further development of computational materials science.

For example, precision machining, for example, material application.

Social resources here can refer to scientific research funds or researchers.

It is definitely not just the research of materials science that benefits the whole body!

At that time, even if the final result of the antimatter project was not satisfactory, the improvement of some of the basic industries of Huaguo that he promised to the Great Elder and others had been perfectly realized.

Therefore, after returning to the dormitory, Liu Feng began to summarize and summarize these procedures, and wrote them in the form of a paper so that others could verify them; of course, by the way, he filled in the patent application for several materials - briefly explain what the patent he wanted to register was, and report it to the person above for review.

However, out of prudence, he did not brag too hard about these calculation programs, but only used "several small programs that may calculate the superconducting properties of materials", "several small programs that may calculate the optical properties of materials", "several small programs that may calculate the compressive properties of materials" and so on as the title of the paper.

However, Liu Feng, who was writing this kind of internal confidential paper alone for the first time, did not know that his caution was completely overly careful.

Computational materials science has several papers submitted almost every once in a while, and there are countless that blow cowhides into the sky.

Having studied a basic material, some people dare to claim to have summed up the calculation problems of this type of material.

Just as external journals can be flooded, internal journals are flooded with papers that are no less absurd than external journals.

As for the reasons for this, on the one hand, there are problems caused by management regulations.

Some internal institutions, in order to evaluate the qualifications of experts and professors, enforce the number of papers published by a certain level of people each year, but the fact is that in the first place, many aspects of research in such an internal organization are thankless, and it is very normal that they cannot produce anything in a year or two......

The other is the academic climate.

There are people who mess around everywhere, and there will naturally be no shortage of internal institutions like military-industrial units, and it is nothing to make a fuss about it with just a few papers.

As for patent applications, Liu Feng attaches much more importance to them.

After all, no matter whether these patents can be applied to the outside world, as long as the patent inventor is him Liu Feng, no one can ignore his merits and interests!

What's more, the actual research results can hit some people's eyes more than a theory!

You must know that during this time, Liu Feng has heard a lot of rumors, saying that he has exhausted his talents, and he has not been able to develop something that can be used for a long time - he, he wants to shut up these people!