1991 Starting from the core

"How is your progress now?"

Su Yuanshan did not say much about the disagreement, but looked directly at the progress of Wenleyton's experiment - in order to prevent Wenleyton and others from taking detours, he directly superimposed a double-layer graphene lattice to obtain the rotation angle θ, and then Based on the satisfaction of translational symmetry, it is deduced that when the angle of θ is less than 2 degrees, the electron speed will become 0.

In other words, double-layer graphene will appear in an insulating state at this time.

Of course, verifying the insulating state of double-layer graphene is not what Su Yuanshan is pursuing. What he is pursuing is the superconducting state.

"The teacher's guess has been confirmed. At a rotation angle of 2 degrees, double-layer graphene is in an insulating state."

Speaking of this, Bruneiton immediately became energetic: "But we don't have time to stop and prepare to continue trying in low-temperature environments."

Hearing this, Academician Su Xinghe was a little surprised. He coughed slightly and asked doubtfully: "Didn't you notify your instructor of the results of your experiments?"

"Oh, this is just a small achievement." Su Yuanshan smiled and explained for his father: "We hope more to obtain the superconducting state."

"Superconducting?"

"Yes. Due to technical limitations, international colleagues are still exploring the properties of single-layer graphene. We need to move faster here, and we can try more. Since we can obtain the insulating state, then according to the simple Bipolarity theory, maybe by changing the conditions and angles, we can have a superconducting state?"

Professor Su Xinghe was startled for a moment, then laughed dumbly: "Bipolar theory? What kind of bipolar theory is there in physics?"

"Haha, to put it bluntly, it's just luck!"

…

Time passes leisurely,

In two months, summer vacation will arrive.

As doctoral students, Wenleyton and Jiang Chao are still entitled to half a month's vacation during the summer vacation, especially Wenleyton. He didn't go home for Christmas last year. In total, he has been in China for half a year. , so he plans to go home for a few more days this summer vacation.

But before the vacation, he still needed to write a thesis and conduct experiments at the same time. After Jiang Chao obtained the first-stage results, he could no longer bear the "desire" in his heart, and he obtained the approval of his tutor, so he went alone Went to design experiments. He was left alone to continue the previous experimental mission with his two junior brothers.

…

"It should be okay now, right?"

Wenleyton carefully checked the paper again, took a long and deep breath, and then pressed the button to send the email.

——As a British person, if he wants to submit an article to Nature, of course he should be the main author. He was even a little proud when he was writing his thesis—English was his mother tongue, and his tutor would definitely not be able to find fault with it.

You know, the tutor doesn’t have any experience studying abroad!

However, after he sent the first draft to his tutor, within a day, the tutor sent him back a revised paper and guidance - and even corrected two grammatical errors.

This made Wenleyton admire his mentor even more - and because of this, he had always been a little bit resentful about Jiang Chao's withdrawal from the team halfway.

You know, their current experiment is a task assigned to them personally by a Nobel Prize-level boss! How dare you quit halfway?

Seeing that the email was sent, Wenleyton stretched his wrist and sent another email to his mother, saying that he would be home in a week at most. Then he stood up and walked out of the dormitory.

As soon as he opened the door, he saw Jiang Chao also opened the door at the same time.

"Chao." He greeted first.

"Brother Wen." Jiang Chao replied with a smile. Wen Leiton was nearly half a year older than him, so he called him Brother Wen from the beginning until now.

The two walked into the elevator side by side.

"Brother Wen, has the paper been revised?"

"Well, where are you?"

"I showed the experimental design to the teacher, and he thought it was very good." Jiang Chao maintained a shy joy on his face, but his tone was unabashedly excited: "When you come back from vacation, I will work overtime every day! "

"Then I wish you success. I'm going to the laboratory now, how about you?"

"I'm going to Senior Sister Xiaoyu's place to take a look and prepare some samples."

The two chatted and went their separate ways after going downstairs.

Wenleyton looked at Jiang Chao's retreating back and couldn't help but sigh slightly - he could understand Jiang Chao's mentality at this time. It was a great happiness for a graduate student that his idea could be recognized and supported by his tutor.

But Jiang Chao seems to not understand that the mentor is the real genius!

Shaking his head, he quickly entered the laboratory and called his two junior brothers.

…

Three hours later.

Su Yuanshan read Wenleyton's paper sentence by sentence. After confirming that there were no problems and that the citations were extremely rigorous, he wrote his name in the corresponding author column.

Then Bruneiton, Jiang Chao tied for first place, and Li Xiaochuan, who has been providing them with data analysis and processing, was the second lead.

"It's a pity that we can't go back to back."

Su Yuanshan sighed slightly, and then prepared to click reply to send.

Just as he moved the mouse, the cell phone next to him suddenly rang.

He stopped the mouse, picked up the phone and took a look. The caller ID showed Wenleyton.

Su Yuanshan suddenly felt an extremely subtle feeling in his heart. He quickly grabbed his phone, took a deep breath and slid the answer icon.

——You know, your students always contact you by email and rarely call yourself.

"Eureka! Teacher!"

On the phone, Wenleyton was so excited that he began to speak incoherently: "Teacher, here you are!"

Su Yuanshan's heart beat rapidly: "What happened?"

"Superconducting! Superconducting appears! Superconducting state appears when the twist angle is 1.1 degrees and the temperature is 1.7 Kelvin!"

Su Yuanshan stood up instantly: "Get ready to repeat the experiment immediately. I'll be right over."

*

*

When the superconducting state appeared again in front of Su Yuanshan, the result was self-evident.

"Prepare the paper immediately. Fortunately, the first one has not been published." Su Yuanshan looked at the manuscript papers on the ground that had not yet been cleaned up. He knew that these people had obviously celebrated when they discovered superconductivity for the first time. He smiled slightly and said: "If nothing else happens, I should be able to publish back-to-back this time."

"Well!" Wenleyton also calmed down at this time, he moved a chair and sat in front of Su Yuanshan, his whole face was radiant, and even the pimples on his face were shining with wisdom: "Teacher, it is of great significance, isn't it? "

"Yes! It means a lot!"

Su Yuanshan looked at the two master's students and said softly: "It has been ten years since graphene was discovered. In the past ten years, because of its particularity in materials, to put it bluntly, it is easy to fill with water - so a large number of papers have been published All focus on the field of materials, while underestimating its own significance.”

"Of course, this is also related to experimental conditions and technological development."

Su Yuanshan silently added in his heart - it may have something to do with the fact that he was the discoverer.

When it comes to the discovery of graphene, there are many Western scholars with tinted glasses who think that Su Yuanshan, who has no overseas study experience at all and has an undergraduate degree from an engineering university that is not top-notch in the field of physics, is a "good luck". "Yun'er" is not very convinced.

In addition, because the discovery was made ten years earlier, and the semiconductor manufacturing process was still at the 1 micron node ten years ago, it is far from the end of silicon-based technology. Therefore, the scientific community is relatively less enthusiastic. Only the field of materials is a little more enthusiastic because it is indeed convenient for water papers.

"The completely opposite special effects shown by this double-layer graphene at a specific twist angle can affect the research direction of the entire condensed matter physics - you may know that superconducting materials have been around for twenty years There is no breakthrough. And even if superconducting materials made the fastest breakthrough twenty years ago, their essence was still to cool down the material, rather than lattice distortion like double-layer graphene. It can be said that it is the basis for future superconducting materials. Expansion provides a new research idea!”

After briefly analyzing the significance of the results for the students, Su Yuanshan encouraged Bruneiton to make persistent efforts and continue to think and experiment in this direction to strive to provide more ideas and results.

"Teacher... that's super..." Wenlaiton took advantage of Su Yuanshan's opportunity to drink water. After hesitating for a while, he still asked this question.

He and Jiang Chao had been designing the experiment, and after the experimental conditions were met, they took turns working overtime and staying up late in the early stages - only in the past two months, Jiang Chao turned to design another experiment because he had new ideas. , and this was accomplished by him alone.

Su Yuanshan smiled slightly: "The results at this stage are your joint results. From now on, the results of you and Jiang Chao will be separate."

Wenleyton was slightly startled, and immediately realized that his instructor had misunderstood what he meant. He quickly shook his head and said: "Teacher, what I mean is to surpass one's own experiments..."

"Oh, don't worry, the discovery of his thoughts should also be wonderful." Su Yuanshan exhaled softly as he spoke, glanced at the two graduate students who just entered the school this year, and said in a slightly serious tone: "In In other laboratories, the influence and importance of the results may be important, because it may mean a good offer and a good social status.”

“But here, following your most intuitive academic instincts is most important.”

"What I want is that in the future you will be physicists who aim at the unknown, rather than physicists who aim at status."

"Understand?"

…

…

As the summer vacation is coming to an end, the SARS epidemic that caused a great deal of fuss in the first half of the year has quietly receded unknowingly - as if the virus has really been wiped out by the heat.

The receding of the epidemic also declares the bankruptcy of some people who stretched their necks to read domestic jokes and expected the country to turn into a black swan.

On the contrary, during the National Day after the epidemic, the country also ushered in a wave of consumption boom. Whether it was the tourism industry or the retail industry, there was a substantial increase compared with the same period last year.

Market and economic analysts have given this wave of market a name - retaliatory consumption.

To put it bluntly, the money in the bag was not spent due to the epidemic, so I felt uncomfortable and had to buy something.

This also proves that ordinary people now have real money in their bags.

In the "tide" of retaliatory consumption, Yuanxin's autumn press conference also ushered in.

…

Last year, Yuanxin's autumn conference was missing Yidoo 4S, or even the entire mobile phone product, and then released Yidoo 5 directly in May this year.

This year-long vacuum period has indeed affected the market share of Yuanxin mobile phones to a certain extent.

But if we look at the entire YOS camp, the market share retreat of Yuanxin Mobile has not affected the expansion of YOS, and has even increased slightly compared to expectations.

After all, Yuanxin mobile phones are still too expensive.

…

In the auditorium of Yuanxin's press conference, Duan Yongping held up a latest mobile phone and introduced it under the spotlight.

"Yidoo5S uses a new A6 architecture chip, integrates a high-speed Y3 GPU, and is equipped with 512MB of running memory and 8G of high-speed storage space."

"Compared with Yidoo5, the overall computing performance of the processor has been improved by 30%. The GPU performance has been improved by 40%!"

"But these are not important. What is important is..."

Duan Yongping said a joke and looked at the silent audience with a smile.

The online press conference in May attracted global attention and enthusiasm, so this time, it is no surprise that global synchronization was chosen.

Including ATV's live TV broadcast, including ivideo's online video live broadcast, including newbook and eso's graphic and text scrolling live broadcast - these many live broadcast methods allowed the conference to be announced to the world within five minutes.

…

"f*ck"

In a slightly cluttered rental house in Silicon Valley, two young people were standing in front of their laptops. They couldn't help but curse at the picture that was still lagging even at the lowest resolution.

"Is the screen stuck?"

"no."

Leonard touched his glasses and made sure he saw clearly whether the picture was a prohibited one. He was very unhappy: "It's too much to whet your appetite."

"Yes, that's too much!" Rajesh echoed.

——The two of them have opened a new computer review column on the SPC forum since Yuanxin launched its notebook. In the beginning, they just reviewed the products on the market from an unbiased perspective. However, with the increasing demand from forum users, especially after the release of Yuanxin's Yidoo4, a large number of people hope that they can review Yuanxin's Yidoo4.

This review is incredible.

The two of them completely became fans of Yuanxin.

It was midnight in Silicon Valley, and the two of them were still standing in front of the computer watching the live broadcast - while looking at the screen, listening to Duan Yongping's Chinese, and at the same time looking at eso's graphic explanation on the notebook next to him.

Duan Yongping did not keep people waiting for too long, but gave the answer directly.

he yelled into his phone.

"Hi, Siri."

Following his voice, a line of English appeared on the curtain behind him.

Speech Interpretation \u0026 Recognition Interface.

"Hello, I'm here."

In the video, there was a female voice that was not very emotional, but sounded quite pleasant.

Leonard and Rajesh looked at each other.

This is? Smart voice assistant?

Yuanxin has developed a voice assistant?

"Call Su Yuanshan"

"Please wait a moment, Su Yuanshan is being connected."

Along with Duan Yongping's "performance", there was an obvious beeping sound from the microphone. Immediately afterwards, the unique ringtone of Yidoo series mobile phones rang in the audience.