It's reasonable for me to have a two-way foil for a second-level civilization, right?

"Professor Lu, I'm afraid this is a bit..." Wei Rong showed a bit of embarrassment on his face.

It's not that he poured cold water on it. As a material academician who specializes in carbon nanotubes, he is very familiar with the properties of carbon nanotubes.

1000Gpa, it cannot be said that it is absolutely impossible, but the possibility of achieving this intensity...

Wei Rong shook his head helplessly, trying to persuade Lu Yongchang.

Chapter 145 Single Wall Carbon Nanotubes vs Multiwall Carbon Nanotubes

"Professor Lu, I think our requirements can be lowered."

"1000Gpa, this tensile strength is too difficult to achieve."

"If you feel that the small space elevators can't meet the transportation needs, we can build a few more, can't we?"

Wei Rong persuaded with "painful words".

Lu Yongchang stared blankly at the carbon nanotubes in front of him.

After a long silence, he suddenly said, "It makes sense."

Before Wei Rong's face showed joy, Lu Yongchang continued: "You're right, single-walled carbon nanotubes won't work!"

Wei Rong: "???"

He looked at Lu Yongchang suspiciously.

Is this what he just said?

As for Lu Yongchang, he seemed to have misunderstood the puzzled look on Wei Rong's face: "Don't you understand?"

"It's very simple. Even with the most ideal structure, the tensile strength of single-walled carbon nanotubes can only reach 800Gpa, which is definitely not enough!"

"We have to start with multiple walls!"

"Considering the preparation process, purity, and the decrease in tensile strength caused by the spinning method..."

"To be on the safe side, we need to increase the tensile strength of a single carbon nanotube to above 1500Gpa!!"

Carbon nanotube

Wei Rong stared blankly at Lu Yongchang, stretched out his hand and slapped his smooth forehead.

Dare to say that Professor Lu didn't listen to a word he said just now, did he? !

There was a bit of anxiety in his eyes: "But, professor, the theoretical calculation of carbon nanotubes with multi-layer walls is too complicated, and we don't even know its upper limit in Gpa!"

Lu Yongchang chuckled lightly.

"Doesn't this just explain the great plasticity of multi-walled carbon nanotubes?"

Wei Rong: "..."

Can you still understand this? !

After some rebuttals, Lu Yongchang unilaterally declared Wei Rong's rebuttal invalid.

Therefore, Wei Rong "happily" fought for Lu Yongchang.

……

"Wei Rong, how about showing me sample No. 56?"

Lu Yongchang said without raising his head: "I remember that they are all in a zigzag arrangement."

At the microscopic level, the atoms of single-walled carbon nanotubes have different arrangements.

Zigzag, Hand and Armchair.

The carbon nanotubes produced by these three arrangements also have different tensile strengths.

As for multi-walled carbon nanotubes...

There are more ways to arrange it.

After all, two-walled carbon nanotubes are multilayered, and so are two-hundred-walled carbon nanotubes.

And what Lu Yongchang and the others are doing now... is also the simplest and most basic method.

Exhaustive method.

To put it simply, just try one by one.

Continuously experiment with permutations and combinations, and then let Zero analyze and calculate these data to find out the rules, and then accurately locate the most suitable multi-layer wall arrangement.

Easier said than done.

Even with the help of zero or one whole lab of researchers, the progress of the experiment is still relatively slow.

"coming!"

Wei Rong's voice approached from far away, accompanied by the sound of hurried footsteps.

After a few minutes.

"Oh, what a pity."

"The tensile strength is only 50Gpa, unqualified."

Lu Yongchang nodded calmly, and then said softly: "Remember to record the data for me. Zero needs a lot of samples to analyze."

Wei Rong nodded silently, standing next to Lu Yongchang, hesitant to speak.

"what happened?"

The moment Wei Rong was spotted out of the corner of his eye, Lu Yongchang asked in a low voice, but the movements of his hands did not stop at all.

Hearing Lu Yongchang's question, Wei Rong sighed softly, with a bit of bitterness in his eyes.

"Professor Lu, we have made more than 80 samples now, but..."

"As of now, we have not found a carbon nanotube with a tensile strength exceeding 100Gpa. I wonder if we have chosen the wrong direction?"

Lu Yongchang shook his head slightly without any pause in his movements, and said firmly, "No, my intuition tells me that the direction is definitely not wrong!"

"Believe me!"

While speaking, an imperceptible greenness flashed in the eyes of Lu Yongchang, who had his back to Wei Rong.

The direction is certainly not wrong.

Long before the official start of the experiment, Lu Yongchang verified his chosen research direction through the "hint" of the technology tree system.

It turns out that multi-walled carbon nanotubes are definitely the way to go.

At least, as a cable material for space elevators, its potential is enormous!

Lu Yongchang's confident words relieved Wei Rong's worries a little.

As a former academician of the Xia National Academy of Sciences, Wei Rong has long heard the "legends" that some scientific research experts rely on scientific research intuition to complete scientific research tasks.

Originally, he didn't really believe in this kind of "story".

But he never expected that this scene would be staged before his eyes.

Although Wei Rong still didn't really believe in this so-called scientific intuition, but thinking of Lu Yongchang's previous achievements, he could only swallow the words that came to his lips with a wry smile.

"Fuck!"

A shout full of surprise came from a distance.

Wei Rong frowned slightly, and shouted in a deep voice: "Xiao Wang, what's going on?!"

"In the laboratory, remember to pay attention to order!"

The face of the researcher named Xiao Wang was full of shock, he pointed to the laboratory table in front of him, and stammered, "Wei, academician Wei, you, come here and have a look, take a look at this sample !"

Wei Rong's heart moved, and a guess emerged from the bottom of his heart.

No way……

The slap in the face won't come so fast, will it? !

His expression tightened, he took a step forward, and hurried towards the researcher!

Lu Yongchang on the side naturally stopped what he was doing, stood up unhurriedly, and walked slowly behind Wei Rong.

……

"incredible……"

Unlike Lu Yongchang, Wei Rong, who was trotting all the way, had already arrived at the test bench.

After some observation, Wei Rong blushed slightly, and shouted in disbelief: "The tensile strength has reached 200Gpa!"

At this time, the experimental platform was already surrounded by researchers.

Every scientific researcher wants to see this miraculous carbon nanotube with his own eyes!

"Oh?"

Lu Yongchang also slowly walked to the periphery of the crowd at this time. Hearing the shouts of Wei Rong in the crowd, the corners of his mouth were raised, and a faint smile appeared on both sides of his cheeks.

"Let me look at the data."

Lu Yongchang's voice fell, and the crowd in front of him seemed to have been pressed the pause button.

"Hurry up, make way, Professor Lu is here!"

"Don't squeeze me..."

After a brief commotion, the crowd gave way.

With a faint smile on his face, Lu Yongchang nodded to the researchers on both sides and then walked towards the experimental platform.

"Not bad!" Lu Yongchang frowned suddenly when he saw the data.

"Keep the current number of layers, try to change the arrangement, and continue to experiment!"

Chapter 146 People's Union Academy of Sciences and Chief Scientist

This sign of success undoubtedly greatly boosted the morale of everyone in the laboratory.

For a while, almost everyone believed what Lu Yongchang said about the 1500Gpa tensile strength multi-walled carbon nanotubes!

In the next few days, good news came one after another from the laboratory.

"Professor Lu, we changed the order of arrangement, and the tensile strength has reached 260Gpa!"

"290Gpa!"

"350Gpa!"

"..."

Day by day, the maximum tensile strength of multilayer-walled carbon nanotubes is also increasing.

Just when everyone was full of confidence, reality gave everyone a big hole.

The data started to fall back.

After the highest tensile strength reached 500Gpa, the data of each subsequent sample did not exceed this record.

Lu Yongchang frowned and looked at the data in the computer.

After pondering for a moment, he slowly shook his head.

"No, it's not right."

"This number of layers of multi-walled carbon nanotubes is definitely not what we need."

Speaking, Lu Yongchang said in a deep voice: "Zero, is the data accumulated enough?"

Zero's voice sounded quickly: "Professor, 5670 sample data have been accumulated so far, do you need me to calculate and analyze it?"

Lu Yongchang's eyes showed a bit of tangled color.

5670 data samples may seem like a lot, but it is obviously not enough for this kind of extremely variable material.

But almost a month has passed since the beginning of the experiment.

If you continue to blindly try and make mistakes, the time cost will be incalculable!

"Zero, try it."

"If possible, it's best to calculate a general direction."

As Lu Yongchang's voice fell, the humming of the cooling system suddenly sounded in the quantum supercomputing center in the distance.