"There are a lot of things that can't be explained clearly in the email, and it's not convenient to put them in the email, so I'll show you how amazing this thing is."

As he spoke, Lu Zhou nodded to Qian Zhongming, indicating that he could start.

After getting Lu Zhou's instructions, Qian Zhongming knocked down a few buttons on the computer next to him, and operated the equipment to import liquid helium to the top of the glass cover.

Almost as soon as the ultra-low temperature liquid helium comes into contact with the wire, the heat of the wire passes at an incredible rate, and then quickly reaches the transition temperature, and the resistivity curve in the computer screen slides to the bottom.

Professor Kreber's pupils narrowed slightly.

The surprise was evident on his face.

"It's too early to be surprised," with a faint smile, Lu Zhou looked at Qian Zhongming and continued, "Increase the voltage." ”

"Okay."

Skillfully operating the equipment, Qian Zhongming increased the voltage applied to both ends of the wire according to Lu Zhou's instructions.

Superconductors have three critical parameters, namely the critical transition temperature Tc, the critical magnetic field strength Hc, and the critical current density Jc.

The meaning of Hc is that when the magnetic field strength of the superconductor surface reaches a certain magnetic field strength Hc, it will exit the superconducting state.

The meaning of JC is the same: when the voltage on both sides of the conductor reaches a certain value, the current passing through the superconductor exceeds the critical value, and the conductor will exit the superconducting state.

According to the experimental reaction data, the SG-1 material showed quite excellent performance on these three critical parameters.

At the very least, it has far outperformed copper oxide superconducting materials.

Looking at the resistivity curve with the current, Professor Kreber's face finally appeared with a shocked look.

From an engineer's point of view, it is clear that it is far easier to maintain the "SG-1" superconducting material at the superconducting transition temperature than it is to maintain the copper oxide material at the superconducting transition temperature.

Glancing at Kreber, Lu Zhou continued: "In addition to these images, we observed its atomic distribution structure under a scanning tunneling microscope, and based on these data, we drew a simulated image of the distribution of carbon atoms. ”

Professor Kreber asked cautiously, "Can you show it to me?" ”

Lu Zhou smiled and said in a relaxed tone, "Of course you can." ”

With that, he continued to signal Qian Zhongming and retrieved the simulated image.

In the simulated image, carbon atoms marked green are tightly stacked.

In the transverse structure, dense carbon atoms are arranged in a hexagonal shape in a space of only 1,000 nanometers in width, like a web woven by a six-grid pattern.

In the longitudinal structure, the layers are stacked at slight angles, creating a slender columnar structure in the vertical direction.

It's like a handicraft, and it's not difficult to feel the difficulty just by looking at it.

Marveling at the molecular processing technology involved, and looking at the simulated images on the computer screen, Professor Kreber finally couldn't help but ask, "How did you do it?" ”

Lu Zhou smiled faintly and said, "We have been inspired by the vapor deposition method, as for how we did it, I can't disclose this for the time being, I hope you can understand." ”

In fact, the synthesis technology of a single graphene nanoribbon was born as early as 2012, which is not magical in itself.

One of the more classic methods is to etch grooves on the surface of silicon carbide and use them as substrates, on which graphene nanoribbons only a few nanometers wide can be formed.

Even in the latest research results, the graphene nanoribbon synthesis technology jointly completed by the CNR Institute of Nanoscience in Italy and the University of Strasbourg in France has cut the nanoribbon to a width of seven atoms.

However, even with the available research results, difficulties remain.

For example, how to make longitudinally stacked graphene nanoribbons and how to adjust the angle of overlap between their layers are all problems that must be solved.

Lu Zhou referred to the method of the CNR Institute of Nanoscience in the design of the experiment, but instead of silicon carbide, he used a metal rhodium sheet with a thickness of a single atomic layer prepared by reducing the weak ligand polyvinylpyrrolidone and formaldehyde, stacked and punched for it, and then adjusted its overlap angle.

It turns out that it is much easier to manipulate a micron-sized substrate than to fiddle with a hexagon with a few atoms in width.

In addition, if the substrate is successfully obtained, it is equivalent to obtaining a mold for synthesizing such wires, which can be reused in the laboratory or on the production line.

Of course, while this may seem simple to say, it's not so simple to do.

There are many complex methods involved, as well as the tireless efforts of countless scientific research dogs.

Thankfully, the job was done.

Kreber couldn't help but ask, "What about the cost?" ”

Lu Zhou said in a relaxed tone: "The main cost is focused on the production of substrates, and the production cost of a small amount is indeed very high, but according to our research, as long as the production scale is expanded, its cost is not as unacceptable as we imagined." ”

Hearing this, the smile on Kreber's face was a little bitter: "But when the industry starts to take interest in it, how long do you think it will take?" ”

Industries don't decide to produce a technology just because it's interesting enough, and they don't rush to update their production lines because ITER needs to add experimental reactors, unless their country secures a profitable order for them through ITER.

Or......

High-tech companies such as Microsoft suddenly discovered that SG-1 materials could be used for the characterization of circuit boards, or supercomputing chips and other places, and the demand generated by the downstream industry drove upstream companies to expand their production capacity in this field.

At that point, it is not certain that the price of this material will come down.

In fact, Kreber felt that this "hair" had exactly such potential, but he also did not know how long he would have to wait for this day.

If you don't see enough profits, industry may never be interested.

Lu Zhou smiled faintly, but said indifferently: "This is not a market economy in the full sense, and the laws you said are not fully applicable here. It doesn't have to be the market entirely, it can be something else. ”

Professor Kreber's eyebrows furrowed, as if he understood what Lu Zhou was referring to.

Although in his opinion, such a thing is simply nonsense......

"You don't have to worry about mass production of SG-1 wires, in fact, we have contacted the relevant companies, and the design of the production line has entered the final stage. Within a year at the latest, we will be able to produce SG-1 materials. ”

After a pause, Lu Zhou looked at Professor Kreber and spoke.

"Let's make a deal."

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