Chapter 205: The new era of superconductivity has arrived!
In previous laboratory tests of superconducting materials, the superconducting temperatures were not much different from the temperatures predicted by the software.
This proves that Xu You's software simulation is indeed very accurate.
If nothing unexpected happens, there shouldn’t be too big a prediction error for the 200K superconducting material this time.
Xu You and Qiao Sen began measuring the material resistance as before.
This time, they didn't even use liquid nitrogen, but directly used dry ice as the coolant.
This is not simply to conform to the concept of "dry ice superconductor".
It's just that in this way, it is easier to control the temperature above 195K.
Of course, Xu You and Qiao Sen both knew that the predicted value of the superconducting critical temperature this time might be quite different from the actual value .
Because Xu You’s simulation model does not have much data on materials with very high superconducting critical temperatures.
In previous superconductors with superconducting critical temperatures of 160K, 170K, 180K, etc., there were slightly larger errors between the predicted values and the actual values.
Therefore, if the temperature after dry ice refrigeration is not enough this time, it is necessary to continue to switch to liquid nitrogen for refrigeration.
As the temperature dropped little by little, everyone focused their attention on the screen.
They all knew that when the resistance curve of the material showed a sharp drop.
The material enters a superconducting state.
When the temperature is about to approach 200K.
Xu You controlled the temperature reduction rate to be relatively slow in order to better determine the superconducting critical temperature of the material.
If the temperature drops too quickly, the critical temperature may be missed all of a sudden.
"Um?"
At this time, Xu You, who was cooling down, suddenly discovered.
When the system temperature drops to 202K.
The resistance of the material suddenly dropped sharply.
Other people in the laboratory also noticed this situation.
"202K!" said a professor.
He looked very excited, but in this situation, he was also trying hard to control the volume of his voice.
No one can celebrate the result before the experiment is over.
Xu You and Qiao Sen also maintained a serious look and continued to complete the resistance measurement experiment.
But they were also very excited because the superconducting critical temperature was 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 exact superconducting critical temperature of this material is 202.26K.
Now that the experiment to measure the superconducting critical temperature has been completed, we can finally celebrate a little.
"202.26K! It's 2K higher than the predicted value. In this case, using dry ice as a coolant is definitely enough. Superconductivity is really about to usher in a new era!"
"Xu You's theory and algorithm are really amazing! This is not just a Nobel Prize-level achievement, it is a groundbreaking achievement!"
"These achievements will definitely make great contributions to the entire human race in the future! However, the core technology must be in our own hands, so that they can also have a taste of the feeling of being strangled!"
After some discussion, Xing Shuping said:
"This is indeed a very celebratory achievement, and it can be said to be the biggest breakthrough since the project was established. However, we still have to 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, future material forming technology, including the cost of material synthesis, will also be a big problem.
Given the current huge cost of synthesizing this material, it will certainly be difficult to apply it to a large number of industries.
"The accuracy of my simulation system is still questionable."
After the excitement, Xu You began to reflect on his own simulation system.
As the superconducting critical temperature of a material gets higher and higher, the gap between the predicted value and the actual measured value will become larger and larger.
Although at the moment, this doesn't seem to be a big problem.
But Xu You vaguely felt that this would have a very big impact on the subsequent search for superconductors with higher superconducting critical temperatures, or even room-temperature superconductors.
Because a large number of superconductor samples that Xu You had previously referred to were superconductors with superconducting critical temperatures below 138K.
This may explain that when the superconducting critical temperature of a material is high enough, some new changes will occur in certain properties.
This may even be the part that Xu You's high-temperature superconductivity mechanism has not explained.
Xu You still needs to further summarize the various properties of these newly discovered superconductors and find some new rules from them.
In the days that followed, Xu You further measured the complete diamagnetism of these materials, as well as the flux quantization properties.
These are the three basic properties required of superconductors.
The results after measurement were very satisfactory, and these substances all met these three basic properties.
Although due to the confidentiality of the project, these results cannot be published publicly.
But it is of great significance for a more comprehensive understanding of the properties of these substances.
Now, whether scientific research results can be published publicly is no longer a big deal to Xu You.
Xu You just wants to discover as much truth as possible to satisfy his own heart.
The project's material experts continued to study the preparation and molding of this material.
On the one hand, we must 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 material molding technology that can be made into wire strips and other molding materials that are more convenient for application.
So far, Xu You has not come up with any better new directions for these technologies.
After all, in terms of materials science, Xu You still cannot compare with China's top materials experts.
…
On this day, Xu You was doing experiments on high-temperature superconductivity in the condensed matter physics laboratory as usual .
Xu You believes that the theory of high-temperature superconductivity mechanism needs further supplementation and revision.
At this moment, someone opened the door of the laboratory.
Xu You subconsciously looked over and found that it was Qiao Sen.
And behind Qiao Sen.
There were also two people standing there that Xu You was more familiar with.
It turned out to be Han Shubin and Liu Jiao.
"Academician Han, Teacher Liu!"
Xu You never thought that Han Shubin would come suddenly.
When he saw the two of them, Xu You greeted them subconsciously.
Han Shubin smiled and said, "Xu You, my sudden visit won't disturb your experiment, right?"
"No, it's not an urgent experiment. We can do it anytime."
These experiments were just a few sets of experiments added by Xu You himself, in an attempt to further improve the previous high-temperature superconductivity mechanism.
