Scholar’s Advanced Technological System

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

Then, Lu Zhou nodded to Qian Zhongming, indicating that it was time to start.

After being instructed by Lu Zhou, Qian Zhongming hit a few buttons on the nearby computer, and operated the device to introduce liquid helium above the glass cover.

Almost as soon as the ultra-low temperature liquid helium was in contact with the wire, the heat of the wire passed at an incredible speed, and then quickly reached the transition temperature, and the resistivity curve in the computer screen slipped to the bottom.

Professor Kleber's pupils narrowed slightly.

It was clear from his face that surprise.

"It's too early to be surprised," smiled slightly, Lu Zhou looked at Qian Zhongming, and continued, "Increase the voltage."

"Ok."

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

The superconductor has 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 on the surface of the superconductor 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 through the superconductor exceeds the critical value, and the conductor will exit the superconducting state.

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

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

Looking at the curve of resistivity versus current, Professor Kreiber's face finally shook his face.

From the perspective of an engineer, he can clearly see that it is far more difficult to maintain this "sg-1" superconducting material at the superconducting transition temperature state than maintaining the copper oxide material at superconducting. Much easier at transition temperatures.

Taking a look 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, a simulated image of the carbon atom distribution was drawn."

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

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

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

In the simulation image, the carbon atoms marked green are closely packed.

In the horizontal structure, densely packed carbon atoms are arranged in a hexagonal shape in a space with a width of only a few thousand nanometers, just like a net woven with a hexagonal pattern.

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

It's almost like a handicraft. It's not hard to feel the difficulty just by looking at it.

Marveled at the molecular processing technology involved, looking at the simulated image on the computer screen, Professor Kreiber finally couldn't help asking: "How did you do it?"

Lu Zhou smiled lightly 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."

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

The more classic method is to etch grooves on the surface of silicon carbide and use this as a substrate, on which graphene nanoribbons that are 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 in France has cut the nanoribbon to a width of seven atoms.

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

For example, how to make graphene nanoribbons stacked vertically, and how to adjust the angle of overlap between layers, these must be solved.

In designing the experiment, Lu Zhou referred to the method of the CNR Institute of Nanoscience, but instead of using silicon carbide, he used a monoatomic layer of metal rhodium flakes made of the weak ligand polyvinylpyrrolidone and formaldehyde. After punching, stack them, and then adjust their overlap angle.

It turns out that it's much easier to manipulate a micron-sized substrate than to fiddle with a few atom-wide hexagons.

And 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 this may seem simple to say, it is not so simple in practice.

This involves a lot of complicated methods, and countless hard work of scientific dogs.

Fortunately, this work was finally completed.

Kreber couldn't help asking: "What about the cost?"

Lu Zhou said easily: "The main costs are concentrated on the production of substrates. A small amount of production costs is indeed high, but according to our research, as long as the production scale is expanded, its cost is not as difficult as we think. Accept ~ www.readwn.com ~ After hearing this, the smile on Kreber's face was a bitter: "How long do you think it will take until the industry is interested in it? "

The industry will not decide to produce a technology because it is interesting enough, nor will it rush to update its production line because iter needs to add an experimental reactor, unless their country wins sufficient profit orders for it through the iter organization.

or……

One day, high-tech companies such as Microsoft suddenly discovered that sg-1 materials can be used for circuit board characterization or other places such as supercomputing chips. Demand from downstream industries has pushed upstream companies to start expanding this field. Capacity.

At that time, maybe the price of this material will come down.

In fact, Kreiber felt that this "hair" had such potential, but he did not know how long to wait for the day.

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

Lu Zhou smiled slightly, but said not very much: "This is not a market economy in the full sense. The laws you said are not completely applicable here. The market that guides the industry is not necessarily the market, but it is OK. It's something else. "

Professor Kreiber raised his eyebrows and seemed to understand what Lu Zhou was referring to.

Although in his opinion, such a thing is just a blah ...

"You don't need 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. We can implement the sg-1 materials at the latest one year. produce."

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

"Let's make a deal."

Genius remember this site address in a second: Mobile version Read URL: