Scholar’s Advanced Technological System

"A lot of things are not clear in the mail, and it is not convenient to put them in the mail. I will show you the scene once, and you will understand how amazing this thing is."

Said, Lu Zhou nodded to Qian Zhongming and said that he could start.

After getting Lu Zhou’s instructions, Qian Zhongming tapped a few buttons on the computer next to him, and operated the device to introduce the liquid raft to the top of the glass cover.

Almost at the moment when the ultra-low temperature liquid helium contacts the wire, the heat of the wire passes at an incredible speed, and then the transition temperature is reached quickly, and the resistivity curve on the computer screen also slides down to the bottom.

Professor Kreb's pupil narrowed slightly.

From his face, you can clearly see the surprise.

"It’s too early to be surprised," smiled faintly. Lu Zhou looked at Qian Zhongming and continued, "Improve the voltage."

"Ok."

Skillfully operating the equipment, Qian Zhongming increased the voltage applied across the wire in accordance with Lu Zhou's instructions.

The superconductor has three critical parameters, namely a critical transition temperature tc, a critical magnetic field strength hc, and a 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 also the same. When the voltage on both sides of the conductor reaches a certain value, the current inside the superconductor exceeds the critical value, and the conductor will exit the superconducting state.

According to the data of the reaction in the experiment, the sg-1 materials showed quite excellent performance on these three critical parameters.

At least, it has far surpassed copper oxide superconducting materials.

Looking at the resistivity versus current curve, Professor Kreb's face finally showed a shocking look.

From an engineer's point of view, it can be clearly seen that maintaining this "sg-1" superconducting material at the superconducting transition temperature is far more difficult than maintaining the copper oxide material in superconductivity. It is much easier to change the temperature.

After looking at Kreiber, 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 plotted the simulated image of the carbon atom distribution."

Professor Kreb asked cautiously: "Is it convenient for me to show it?"

Lu Zhou smiled and said softly, "Of course."

After all, he continued to signal Qian Zhongming and took the analog image.

In the simulated image, the carbon atoms labeled as green are closely packed.

In the lateral structure, the dense carbon atoms are arranged in a hexagonal shape in a space of only a thousand nanometers in width, just like a net woven from a six-grid pattern.

In the longitudinal structure, the layers are stacked at a slight angle between the layers, and an elongated columnar structure is pulled in the vertical direction.

It's like a craft, it's not easy to feel it.

Marveling at the molecular processing techniques involved in this, watching the analog images on the computer screen, Professor Kreb 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 to do it, please forgive me for the time being. I hope you can understand it."

In fact, the synthesis technology of a single graphene nanobelt was born in 2012, which is not magical.

A more classical method is to etch a groove on the surface of the silicon carbide and use it as a substrate on which a graphene nanoribbon of only a few nanometers wide can be formed.

Even in the latest research results, the graphene nanoribbon synthesis technology jointly completed by the Italian cnr nanoscience institute and the University of Strasbourg, France, cut the nanoribbon to a width of seven atoms.

However, even if existing research results are available for reference, the difficulties still exist.

For example, how to make longitudinally stacked graphene nanoribbons and how to adjust the overlap angle between layers is a problem that must be solved.

In the idea of ​​design experiment, Lu Zhou refers to the method of cnr nanoscientific research institute, but it does not use silicon carbide, but the monocrystalline layer thickness of metal bismuth thin film obtained by reduction of weak ligand polyvinylpyrrolidone and formaldehyde. After stacking, punch it and then adjust its overlap angle.

It turns out that it is obviously much easier to operate a micron-sized substrate than a hexagon with a few atomic widths.

Moreover, as long as the substrate is successfully obtained, it is equivalent to obtaining a mold for synthesizing such a wire, which can be repeatedly used in a laboratory or a production line.

Of course, although it seems simple to say it, it is not so simple to do.

This involves a lot of complicated methods, as well as the hard work of countless research dogs.

Fortunately, this work is still finished.

Kreb couldn't help but ask: "What about the cost?"

Lu Zhou said with ease: "The main cost is concentrated on the production of substrates. A small amount of production costs are really high, but according to our research, as long as the scale of production is expanded, its cost is not as difficult as we think. accept."

Upon hearing this, the smile on Kreiber's face was bitter: "But when the industry began to interest it, how long do you think it will take?"

The industry will not decide to produce it because a technology is interesting enough, and it will not rush to update its production line because iter needs to add an experimental reactor, unless their country has secured enough orders for them through the iter organization.

or……

When high-tech companies like Microsoft suddenly discovered that sg-1 materials could be used for circuit board characterization, or other places like super-chips, the demand generated by downstream industries pushed upstream companies to expand this field. Capacity.

At that time, the price of this material would not be lowered.

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

If you don't see enough profit, the industry may never be interested or uncertain.

Lu Zhou smiled a little, but he did not care too much: "This is not a market economy in the full sense. The laws you said are not entirely applicable here. The industry is not necessarily completely market, but also It's something else."

Professor Kreb’s eyebrows picked and picked, and seemed to understand what Lu Zhou meant.

Although in his opinion, it is simply a slap in the face...

"You don't have to worry about mass production of sg-1 wires. In fact, we have already contacted the relevant companies, and the design of the production line has entered the final stage. At the latest one year, we can implement sg-1 materials. produce."

After a moment of pause, Lu Zhou looked at Professor Kreiber and said.

"Let's make a deal."

Https:

Genius one second to remember the address of this station: . :m.