Chapter 524

After determining the thickness of the nickel sheet, Gu Lu and Ke Bo began the next step.

"Next, we need to heat the graphite powder and apply a rated pressure."

The purpose of this step is to decompose graphite and allow the high diffusivity of carbon in nickel to quickly pass through the metal film.

"Then, we need to move the nickel..."

Gu Lu and Ke Bo followed the planned plan step by step.

Half an hour later...

After more than ten steps of operation, Gu Lu and Ke Bo finally obtained a multi-layer graphene covered on a nickel sheet.

After removing the nickel sheet through simple etching, a complete and standard interconnect structure of doped multi-layer graphene is achieved.

Ke Bo carefully picked up the etched multi-layer graphene with tweezers, a smile appeared on his face, "Professor Gu, are we...successful?"

Gu Lu took a closer look and nodded, "It seems to be a preliminary success. After all, this graphene structure doped with multi-layer interconnections is exactly what we need."

"However, the multilayer graphene we have now probably does not meet our actual needs."

Gu Lu was right.

Cobo put the multi-layer graphene on special equipment and observed it, and found that the multi-layer graphene just processed had only five layers of carbon atoms.

According to Ku's law and Copper's estimation, if you want to build a conductive zero-gap energy band on the vertical plane of multi-layer graphene, the number of graphene layers must reach at least twenty.

and……

In addition to the fact that the number of layers of carbon atoms in graphene does not meet the standard, the quality of such multi-layer graphene also cannot meet the requirements of semiconductor quantum chips.

"Hey!" Ke Bo sighed softly, disappointed, "I thought I could succeed in one go!"

Gu Lu didn't feel as disappointed as Ke Bo.

In Gu Lu's opinion, it was already very good to reach this level in the first experiment.

At the very least, it proves that their theory of 'pressure-assisted solid phase diffusion' is completely feasible.

Next, just by adjusting some process parameters, such as the thickness of the nickel sheet, it is entirely possible to process the actually required multi-layer graphene semiconductor quantum chip.

Gu Lu patted the somewhat dejected Ke Bo on the shoulder and smiled faintly, "How can it be so simple? It's just the first experiment. It's already very good to be able to achieve this effect. We only need to improve this pressure-assisted solid phase diffusion theory in the future.

, by determining the specific values ​​of some process parameters, we can process and produce the multi-layer graphene chips we need."

Ke Bo nodded and said firmly, "Well, Professor Gu, I will work hard with you!"

…………

The days go by like this day by day.

The research work on Gu Lu and Ke Bo's side is also progressing steadily.

Through multiple theoretical derivation and simulation experiments, Gu Lu and Ke Bo have determined the specific values ​​of some process parameters in the production process of multi-layer graphene.

For example, the thickness of the nickel sheet should be between 2.5mm and 2.7mm, the heating temperature of the graphite powder needs to be above 300 degrees Celsius, and the pressure should be controlled within the range of 1200~1250kpa.

But there are still some process parameters that require a certain amount of time to be experimentally calculated.

As for the team led by An Yu, the progress is slower than that of Gu Lu's team.

But not long ago, a practical theoretical solution was found, and just like Gu Lu, the results are being continuously revised through experiments.

Under such circumstances, the time came to June 23rd.

This was originally an ordinary day.

It's not a holiday, nor is it a weekend.

But today is a very important day for many people.

Because just this morning, the college entrance examination results of this year's college entrance examination will be officially released.

This report card, which determines the fate of many people, will be officially released!

…………

Yanjing, Pan Zuan's home.

Pan Zuan leaned on the sofa and stared blankly at the TV screen in front of him where the big boss from the Ministry of Education was speaking.

According to the practice of previous years, in less than half an hour, the boss of the Ministry of Education will announce this year's liberal arts and science scores.

Then, each college entrance examination score query channel will begin.

By then, it will be the day when Pan Zuan is sentenced.

From the way Pan Zuan looks sluggish and has lost a lot of weight, we know that Pan Zuan has not had an easy time in the half month after the college entrance examination.

But that's right.

I failed miserably in the math test, so it’s strange that I can live comfortably for the past half month.

In fact, it is not just Pan Zuan, there are many candidates this year who have not been as happy as they imagined in the half month between the end of the college entrance examination and now.

When I think about checking my scores and seeing my very wide scores, the Fat House Happy Water in my hand suddenly doesn’t taste good anymore, and the games on my computer suddenly don’t play anymore.

Everyone originally thought that after the college entrance examination, they could have sex and indulge.

But they found that before the results actually came out, they had no intention of playing at all.

Especially the difficulty level of this year's math paper basically made people have no intention of going out to play after the college entrance examination. Instead, they stayed at home honestly every day. The purpose was to create the image of a good baby in the eyes of their parents.

Avoid being subjected to a couple's mixed doubles after the college entrance examination results come out.

Take Pan Zuan, for example. Before the college entrance examination, Pan Zuan planned to go out and hang out as soon as the college entrance examination was over. He would stay up all night in Internet cafes and KTVs every day.

But now, except for going downstairs to help buy some oil, salt, sauce, vinegar and tea, Pan Zuan has not left home for half a month.

In addition, Pan Zuan got up on time every day and mainly cleaned housework. He didn't even go to the kitchen, but he also learned to cook a few simple dishes. This surprised Pan Zuan's parents, who wondered if their son had been taken away by someone else.

But in fact, this was just Pan Zuan leaving a way out for himself.

"Mom, I'll go to the kitchen and cut a watermelon."

There were still more than ten minutes before the college entrance examination results were released. Pan Zuan found an excuse to come to the study. After cutting the watermelon and placing it on the fruit plate, Pan Zuan took advantage of his parents in the living room not paying attention and hid all the knives in the kitchen tightly.

good.

Pan Zuan was thinking about his own life.

After the college entrance examination results are announced later, Pan Zuan feels that there will probably be a couple's doubles match. Pan Zuan needs to hide some dangerous 'weapons', otherwise his parents will get excited and kill him with a knife on impulse.

If the person he had practiced for eighteen years was destroyed by himself, who could he ask to reason with?
Chapter completed!