Comprehension Against The Sky, Graduation Project Nantianmen Project!

Facing the crowd's expectant or doubtful eyes.

Luo Fei smiled, not prepared to do it himself, looked at Senior Brother Yang, smiled embarrassedly and said:

"Senior Brother Yang, I have an intuitive idea, can I trouble you to operate it for me?"

"It's been a long time since I did such a precise experiment by myself, my hands are a bit raw."

Intuitive thought?

Everyone was a little confused when they heard it.

But immediately some joy.

Materials science is different from other subjects, and sometimes it is really too metaphysical.

So intuition, really, is a good thing.

It's like a person standing in the middle of the wilderness, not knowing which direction to go.

At this time, the direction of intuition may be wrong in the end, but it must be a beginning!

It's better than standing still.

"good!"

Senior Brother Yang was very sure of Luo Fei's tone.

And it's just an operation, anyway, idle is idle, and it just happened to show off the operation.

So he stood in front of the test bench and asked:

"How do you want me to do it?"

Luo Fei asked:

"What's the temperature inside now? Can it drop to 1.7K?"

"1.7K? Characteristic research at extremely low temperature?"

Senior Brother Yang nodded, and then began to adjust the temperature.

After the temperature was adjusted to 1.7K, Luo Fei said again:

"The placement angles of the two-layer graphene sheets we have been trying before are 15, 30, 45, and 60. Can you try a smaller angle?"

"Like around 1?"

"Around 1?"

The angle Luo Fei spoke of was so small that many of them were taken aback for a moment.

Professor Cheng also touched his chin, he had never tried such a small angle.

However, it may be a new idea.

At this time, Senior Brother Yang had already started to operate.

When the deflection angle of the two layers of graphene reaches 1, a strange phenomenon appears!

see!

From what the instrument shows, the electrons are almost stopped by the usual condensed matter physics standards!

Under normal circumstances.

In conventional metals, high-speed electrons are responsible for electrical conductivity.

But after deflecting the bilayer graphene by 1, the movement of electrons becomes very slow.

Even the speed displayed on the dashboard is close to zero!

"Huh?"

When Professor Cheng saw this scene, he couldn't help but let out a little gasp.

This does not mean that he is calm, but very excited anyway.

The others couldn't help clenching their fists, watching Senior Brother Yang's operations and the numbers on the dashboard.

"1.08?"

At this time, Luo Fei said:

"Now, verify the conductivity of two-layer graphene!"

"good!"

Senior Brother Yang was very excited, but he was as steady as an old dog when he manipulated his hands.

next moment!

It conducts electricity!

The numbers on the dashboard indicate that the twisted 1.08 between the two layers of graphene is conductive!

This is completely unreasonable!

Under normal circumstances, under the traditional theory of superconductivity, electrons moving so slowly should not be able to conduct electricity!

However, between the two layers of graphene, where electrons move at a speed close to zero, conducts electricity!

why is that?

So everyone expressed their incomprehension, even Senior Brother Yang, who was operating the experiment, looked confused when he saw the results of the experiment.

But at the same time, he is also an element of inner excitement, setting off huge waves.

No matter what the specific reason is.

Senior brother Yang and everyone else know that this twisted 1.08 double-layer graphene must have properties that can be studied!

Looking at the experimental results, Professor Cheng gradually had a theoretical guess in his heart.

However, he didn't say it immediately, but looked at Luo Fei and asked:

"If you were asked to explain this phenomenon theoretically, from which direction would you try to explain it?"

In general.

If a special phenomenon is found in the experiment.

The first step is to document it.

The second step is to try to use the existing theory to explain its cause.

Luo Fei thought for a while and said:

"It has been said before that changing the angle at which two graphene sheets overlap can greatly reduce the speed of conduction electrons between the two-layer graphene sheets, thereby changing the electronic behavior."

"I've guessed before."

"Normally, if you have a lot of kinetic energy, if the electrons are moving extremely fast, they have very little time to interact."

"But what if the electrons in the twisted two-layer graphene sheet slowed down?"

"Could things be different?"

"Between the electrons of the bilayer graphene flakes, a strong interaction begins to appear, which means that the mutual motion of the electrons becomes more sensitive and more interdependent."

"In technical terms, I'd call it highly correlated!"

Highly correlated!

Professor Cheng couldn't help but nodded, and said gratifiedly:

"Increased correlation in the way electrons move can do wonders that would otherwise have been impossible."

After finishing speaking, he looked at the crowd and said excitedly:

"Everyone, we should have discovered a very valuable graphene research direction!"

"Wow!"

After Professor Cheng's words fell, there was a sudden commotion from the crowd.

at the same time.

All eyes were on Luo Fei.

They all knew that it was Junior Brother Luo who brought the magical angle of 1.08 to the laboratory!

At this moment, Luo Fei was simply radiant in their eyes!

...

...

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