Top Student

For the previous superconducting materials, the superconducting temperature tested in the laboratory is almost the same as the temperature predicted by the software.

This proves that Xu You's software simulation is indeed very accurate.

If nothing else, this time the 200K superconducting material should not have too many prediction errors.

Xu You and Qiao Sen started to measure the material resistance as before.

This time, they didn't even use liquid nitrogen, and directly used dry ice as a coolant.

This is not simply to conform to the concept of "dry ice superconductor".

It's just that in this case, it is easier to control the temperature above 195K.

Of course, both Xu You and Qiao Sen knew that the predicted value of the superconducting critical temperature this time might be quite different from the reality.

Because of Xu You's simulation model, there are not so many data on substances with very high superconducting critical temperatures.

In the previous superconductors with superconducting critical temperatures of 160K, 170K, 180K, etc., there was a slightly larger error between the predicted value and the actual value.

Therefore, if the temperature after dry ice refrigeration is not enough this time, it is still necessary to continue to replace it with liquid nitrogen for refrigeration.

As the temperature dropped bit by bit, everyone focused on the screen.

They all know that when the resistance curve of the substance drops sharply.

The matter enters the superconducting state.

When the temperature will be close to 200K.

Xu You controlled the rate of temperature drop to be relatively slow in order to better determine the superconducting critical temperature of the material.

If the temperature is lowered too quickly, the critical temperature may be missed all at once.

"Um?"

At this time, Xu You, who was cooling down, suddenly found out.

When the system temperature drops to 202K.

The resistance of the substance suddenly and sharply decreased.

Others in the lab also noticed such a situation.

"202K!" said a professor.

His expression was very excited, but on this occasion, he was also working hard to restrain his volume.

Before the end of the experiment, no one can celebrate this result in advance.

Xu You and Qiao Sen also kept a serious look and continued to complete the resistance measurement experiment.

But they are also very excited in their hearts, because the critical temperature of such superconductivity is even 2K higher than the predicted value.

This means that this new type of material can be cooled with dry ice to achieve a superconducting state.

Finally, after repeated careful measurements.

Xu You determined that the accurate superconducting critical temperature of this substance is 202.26K.

The measurement experiment of the superconducting critical temperature is over, and everyone can finally celebrate a little bit.

"202.26K! It's more than 2K higher than the predicted value. In this case, using dry ice as a coolant must be enough. Superconductivity is really about to usher in a new era!"

"Xu You's theory, and this algorithm... are really amazing! This is not just a Nobel Prize-level achievement, it is completely a cross-generational achievement!"

"These achievements will definitely make great contributions to the entire human race in the future! But the core technology must be in our own hands, so that they can also experience the feeling of being stuck!"

After some discussion, Xing Shuping said:

"This is indeed an achievement worth celebrating. It can be said that it is the biggest breakthrough since the establishment of the project. However, everyone should remember that there is still a long way to go, and the application value of this substance is still uncertain. .”

Although the material has been synthesized, its superconducting properties and very high superconducting critical temperature have also been verified.

However, the future material forming technology, including the cost of material synthesis, is also a big problem.

According to the huge cost of synthesizing this material, it must be difficult to apply it to a large number of industries.

"The accuracy of my simulation system is still problematic."

After the excitement, Xu You also began to reflect on his own simulation system.

When the superconducting critical temperature of the material is getting higher and higher, the gap between the predicted value and the actual measured value will become larger and larger.

Although at present, this does not seem to be a big problem.

But Xu You vaguely feels that this will have a great impact on the search for superconductors with a higher superconducting critical temperature, and even room-temperature superconductors.

Because a large number of superconductor samples that Xu You referred to before are all superconductors with a superconducting critical temperature below 138K.

This is likely to explain, but when the superconducting critical temperature of the material is high enough, some new changes will appear in some properties.

This will even be the part that Xu You's high-temperature superconducting mechanism has not explained.

Xu You still needs to further summarize the various properties of these newly discovered superconductors, and find out some new laws.

In the following days, Xu You further measured the complete diamagnetism of these substances and the properties of flux quantization.

These are the three basic properties necessary for superconductors.

The results after measurement are very satisfactory, and these substances all satisfy these three basic properties.

Although due to the confidentiality of the project, these results must not be published publicly.

But for a more comprehensive understanding of the properties of these substances, it is of great significance.

Now, whether scientific research results can be published publicly is already a matter of indifference to Xu You.

Xu You just wanted to discover as many truths as possible to satisfy his heart.

The material experts of the project continued to study the preparation and molding of this material.

On the one hand, it is necessary to reduce the preparation cost as much as possible, and strive to make it popular in the future.

On the other hand, it is necessary to develop the molding technology of the material, which can be made into a strip shape, etc., which is more conducive to the application of molding materials.

So far, Xu You has no better new directions for these technologies.

After all, in terms of material science, Xu You still can't compare with those top material experts in China.

...

On this day, Xu You was still doing experiments on high-temperature superconductivity in the condensed matter physics laboratory as usual.

Regarding the theory of high-temperature superconducting mechanism, Xu You felt that further supplements and revisions were needed.

At this time, someone opened the door of the laboratory.

Xu You subconsciously looked over and found that it was Qiao Sen.

And behind Johnson.

There were also two people Xu You was familiar with standing.

It turned out to be Han Shubin and Liu Jiao.

"Academician Han, Teacher Liu!"

Xu You never thought that Han Shubin would come suddenly.

Seeing the two of them, Xu You still subconsciously greeted them.

Han Shubin smiled and said, "Xu You, the sudden visit won't disturb your experiment, will it?"

"No, it's not an urgent experiment, you can do it anytime."

These experiments are just a few sets of experiments added by Xu You himself, and he wants to further improve the previous high-temperature superconducting mechanism.