Scholar’s Advanced Technological System

Nanjing Institute of Advanced Studies.

Institute of Computational Materials.

With Lu Zhou coming to the lab, Yang Xu, who was sitting in front of the computer and called up the test data, said with a look of emotion.

“It is incredible…”

Lu Zhou didn’t ask where it was incredible, but went straight to the question: “What material is that thing?”

“Silver,” Yang Xu said, took a deep breath, “Accurately, it is silver and graphene!”

“Silver and graphene?” Looking at Yang Xu, Lu Zhou was surprised: “Just this?”

In the impression, he seems to have seen similar thesis.

It’s just because there is not much research on metal materials, and I can’t remember where I saw it.

To be honest, when he heard only these two materials, he was still a little disappointed. Although he also knows that even a higher civilization probably won’t build costs on a wire, he didn’t expect it to be so ordinary.

However, Yang Xu looked at him silently.

“Is it awesome to scream on these two?”

Saying, as if to prove this, he tapped a few buttons on the keyboard.

Soon, a TEM image is presented on the screen.

I saw that on the image, black and gray plaques were interlaced, and a neat and delicate texture was interwoven in the two-dimensional space of the plane, revealing the secret of the nanometer scale in the silver wire. come out.

Pointing at several key areas on the image, Yang Xu did not explain much. Continue to started talking. “Look at these places and you will know.”

Leaning closer to the computer screen, Lu Zhou looked in the direction of his index finger.

Only a silver atomic group of approximately spherical size between 1-5nm and a single layer of graphene similar in lateral dimension is attached.

Soon, Lu Zhou’s eyebrows wrinkled slightly.

Even if there is not much research on metal materials, he can see the unusual things.

This is not a problem that is not so good.

But do not do the problem…

The production of graphene alloys based on metal materials requires bonding between metal nanoparticles and graphene.

At present, only the cold metallurgy of powder metallurgy can be achieved. However, even with powder metallurgy, there is no way to bond graphene and silver nanoparticles to such a perfect degree.

It is no exaggeration to say that the slender silver wire is just a piece of art.

See Lu Zhou did not speak, Yang Xu continued with a feeling of emotion.

“Powder metallurgical comparison frontiers are also relatively unpopular. I don’t know much about this one. But with 3D printing technology as an example, the best metal powder is about 10,000 mesh, which is almost 13 micron. Some nanometers. The powder used for ceramic materials may be a bit thinner, but also on the micron level.”

“Although some laboratories can do ultra-fine grinding of 20nm and below…but this kind of powder is almost impossible to store under normal conditions, let alone to bond with graphene debris.”

Not only is it difficult to prepare, it is difficult to screen, and it is more difficult to save.

The higher the mesh of the metal powder, the smaller the particle size, the easier it is to oxidize, and the agglomeration is extremely prone to occur.

The only two problem-solving ideas that seem to work are either to disperse them in a special way while smelting, or to mix them directly with graphene crumbs while generating the powder. On the substrate.

Leaning on the chair, Yang Xu sighed.

“As you can see, it’s not in the technology itself, it’s difficult to achieve the production process. In fact, thesis of Ag/GF, Ag/GO, AgFe/rGO, etc., because of electronics The rapid development of the industry can be said to be endless a few years ago.”

“For example, indium tin oxide for making mobile phone screens has fragile properties, and many Scholars have proposed combining nanowires with graphene to develop a new generation of flexible flexible screens. According to limited experimental data, this The mechanical properties of the materials are quite excellent, and the electrical resistivity is much lower than that of the general metal… When I was a postdoctoral fellow at MIT, there was a laboratory there to do this research.”

Moving away from the screen, Lu Zhou asked, “What later?”

Yang Xu shrugged: “I don’t know, but I guess most of the projects can’t go on. Indium tin oxide is not cheap, but silver is better. Even if this technology is made, most people will not use it.”

Thinking of this, Lu Zhou’s expression is a bit weird.

If using silver as a mobile phone screen is considered extravagant, then what is the use of silver as a wire?

But thinking that if space travel can do it, space mining is probably not a difficult thing, Lu Zhou is relieved.

For a civilization with this technology, the value of silver may be a little more expensive than copper.

Looking at the data on the computer screen, Yang Xu’s eyes are filled with curious expression.

After hesitating, he finally couldn’t help but ask, “Where did you get this thing?”

It feels the same as Lu Zhou.

In his opinion, the silver wire of the length of the thumb is like a piece of art!

It is no exaggeration to say that its existence has subverted the industry’s perception of metallurgical technology.

However, Lu Zhou did not answer his confusion. He simply replied: “National secrets, you can only help me to do the reverse. Other things know that it is not good for you.”

Lu Zhou didn’t explain this question too much because there was no such necessity at all.

Even before the Lingyun Medal, he does not need to explain anything to anyone.

Or to retreat 10,000 steps, even if he needs to explain anything, it is enough to explain to one person.

And this kind of thing will only happen in one situation.

That is his behavior, which seriously jeopardizes national security.

In addition, it is no exaggeration to say that even those responsible for his security work, those responsible for keeping him secret, have no right to investigate the “secret” itself.

However, when she saw the surprise of Yang Xu, Lu Zhou was also secretly glad.

Fortunately, he only cut a small sample down.

If you let this guy know that he still has a bunch of things, I don’t know if he will be shocked to doubt life.

“Ok……”

Reluctantly shrugged, Yang Xu reluctantly accepted this perfunctory statement.

If it involves confidentiality, knowing too much is really not good for him.

Paused, Yang Xu continued.

“But it’s not easy to reverse this stuff. At least I can’t think of it for a while, how can I make this thing?”

Lu Zhou: “If you relax silver nanoparticles to the micron level?”

Yang Xu hesitated and said: “The difficulty still exists, but if you are interested, we can try it. But…”

Lu Zhou: “But?”

“But does this make sense?” Yang Xu asked. “Although I admit that the resistivity of this Ag/GF material is excellent, considering its silver price, its industrial application prospects are almost zero.”

It took a lot of effort to understand the mystery, and at most it can only produce a “beautiful” thesis.

This kind of thing may be of interest to general researchers, but for Lu Zhou and Yang Xu, the meaning is not significant.

After all, unlike mathematics physics, Material Science itself is an application-based subject…

Lu Zhou also thought about this issue for Yang Xu for a long time.

To be honest, his heart is also hesitant, whether there is any value in recycling this technology.

However, in the end, Lu Zhou made up his mind in his heart and said.

“I can’t answer your question, at least I can’t answer it now.”

“But intuition tells me that it is worth it.”