1991 Starting from the core

Finding an "employment" path for tablet computers was a direction set half a year ago. Even in Yuanxin's private middle schools, the strategy has already begun, with no troops or troops moving, but food and grass first - an education system development team has been set up. A learning system called "Smart Classroom" has been developed.

But after all, the influence of middle schools is still a bit low. To achieve dissemination influence and cultivate usage habits, it must rely on the current main force of Internet users, college students.

After listening to his son's ideas, Academician Su Xinghe nodded slightly, recognizing the advanced nature of this model. But then he asked the most important question - where did the tablet come from?

Let Electronic Technology Co., Ltd. buy it centrally? Don't be kidding...even if everyone knows about the relationship between Yuanxin and Dianke, the affairs of Guatian Lixia must be avoided.

Let students buy it? That's even more impossible.

"It's okay, we just need to donate a batch, and it's not just about the electrical department, we also need to donate a circle."

"How much to donate?"

"Each school will depend on the situation, but it will probably be a few hundred units - but let's make it clear first that this is used for teaching, not as a benefit for teachers."

Su Xinghe calculated silently and then laughed: "You are really rich. Donating this round should be at least a million, right?"

"More than that, just think of it as advertising."

"If this is really to be used as an advertisement, why not visit schools all over the world..."

Su Yuanshan laughed loudly: "They may not be willing to cooperate with us, and the United States is not short of money. The Federal Reserve has cut interest rates and loosened monetary policy. Who can't afford to spend a few hundred dollars on a tablet computer in advance? Let alone tablet computers. , even the house can be spent at will.”

"Consumption of houses casually?" Academician Su Xinghe was slightly startled after hearing this. He is not engaged in economics and hardly pays attention to relevant policies, but this does not mean that he does not have the most basic sensitivity - when a country talks about consumption of houses casually, That obviously means that either the bubble is being inflated or the bubble is bursting and houses become bargain prices.

"Well, housing prices in the United States have already been rising, and Wall Street has also invented a new way of playing it, using a Gaussian copula model to price and rate CDOs - oh, CDO is a financial term, referring to secured debt obligations. Then package this thing and sell it to investors..."

Seeing that his father was listening attentively, Su Yuanshan briefly introduced to his father the vigorous "Real Estate Transfer Movement" currently taking place in the United States.

In fact, this is also the essence of the subprime mortgage crisis.

——The house buyer selects a house, then finds a mortgage company, the mortgage company evaluates and gives money, and the house buyer repays the loan—this is a standard process.

But since the Federal Reserve has aggressively cut interest rates and pushed capital into the market, more people want to make money. For example, investment banks find mortgage companies, directly buy the debts from the mortgage companies, then rate the debts based on the credit status of the home buyers, and sell the debts to investors at different prices.

Frankly, if everything goes according to the good vision, everyone will profit from the complete transaction and the risk will be shared equally.

But the beautiful vision of capital has always been to do the biggest business with the least money - so a large number of houses were sold, even if the buyers had extremely poor credit.

"What should we do if the landlord cuts off the payment?" Academician Su Xinghe immediately asked the key.

"As long as housing prices are rising, even if you take back the house, you will still make money, because the rising housing prices themselves include a hedge against the cessation of supply." Su Yuanshan shrugged and chuckled: "Now those people on Wall Street are having a great time. Almost everyone thinks that this set can be played for at least ten or twenty years."

"What do you think?" Su Xinghe asked immediately knowing that his son was also quite talented in financial investment.

"I think? They think it's a drumbeat to spread flowers, I think it's a drumbeat to spread thunder - as long as housing prices fall, they will explode immediately." Su Yuanshan chuckled: "If you don't believe it, just wait and see, now they have foreign wars to stimulate them and they are not very good at it. It can be seen that when the battle is over and you look back, you will know how dangerous this thing is."

In fact, Su Yuanshan still had nothing to say - compared with the previous life, a lot of capital from the United States and the United States poured into the post-recovery Internet. In this life, due to the existence and changes of Yuanxin, the Internet is a big pool with many more people from China, HK , Southeast Asia, Japan, and even the capital of Europe.

As we all know, money in the United States is printed - Su Yuanshan even believes that the quantitative easing policy has actually begun - so when there is not much room for them to burn on the Internet, it will flow into the seemingly booming subprime mortgage market. Take it for granted.

In other words, the subprime mortgage crisis may be detonated in advance.

Of course, just like the original judgment of the Internet bubble, everyone knew it would explode, but no one knew when.

…

After talking about housing prices in Laos and the United States, the father and son then talked about domestic housing prices.

Due to the impact of economic growth, domestic housing prices are generally on the rise, but overall, the increase is not large, and they are concentrated in economically developed areas - after all, the unfinished buildings left behind ten years ago are still It stands there, always reminding people to be vigilant.

And with a series of technology companies such as BOE, Soxin, and Kingsoft listed in the country, domestic veterans have also found new investment directions. In a sense, the prosperity of the stock market is also conducive to suppressing housing prices. Money If you go to the stock market, there will naturally be fewer real estate speculators - it's all speculation.

Therefore, overall domestic housing prices are still relatively healthy.

After all, people have a strong balance in their minds - Hong Kong's economy is so developed and its per capita income is so high, but it is still a small place, and the average housing price is less than 41,000 square meters.

If the ratio of per capita income to housing prices in any of your domestic cities dares to exceed that of HK, then you will be criticized by the people.

After chatting about domestic housing prices, Su Yuanshan took a look at the time, stood up and said, "Dad, is there anything else? If nothing else, I'll take a step forward and go to the laboratory to check."

"You want to go to the laboratory? Then I'll go over and take a look. It's time to get off work anyway." Su Xinghe stood up as he spoke, patted his son on the shoulder, and said cheerfully: "This is what you call talking, you are a Director of a national laboratory.”

"Um... I just don't have enough time to go to the lab, so that doesn't mean I don't pay attention. I see the progress of each topic in the lab every week, and I also get any equipment needed as soon as possible. Bar……"

The father and son walked towards the car as they talked.

Since the conversation came about the laboratory, Su Xinghe naturally asked about the status and project progress of Su Yuanshan's graduate students.

Su Yuanshan told his father in detail that three of his doctors and two masters were trying their luck in the field of graphene.

Then when he talked about graphene, Su Xinghe inevitably asked his son if there was any hope for this year.

——It has been ten years since the advent of graphene, and related research has become hot in recent years. Related journals have published article after article. It is not an exaggeration to say that his son has found a way out for a large number of scientific researchers. .

Let's put it this way, there are already rumors in China that they hope to send Su Yuanshan to the Academy of Sciences - anyway, Xi Xiaoding has made it clear that he will push Su Yuanshan this year.

Regarding his father's expectations, Su Yuanshan really didn't dare to boast. He could only vaguely express that maybe graphene still needs a relatively major breakthrough - whether it is a theoretical breakthrough or an application breakthrough, before there is hope.

The father and son chatted all the way from the car to outside the laboratory.

The Condensed Matter National Laboratory is located in the middle of the Yuanxin Electrical Engineering Department. It is a newly built independent research institute. It currently has superconducting physics, advanced materials and structural analysis, extreme condition physics, optical physics, soft matter physics, condensed matter theory and There are more than ten research departments including materials calculation, etc., with more than 200 permanent researchers. In addition, there are "cooperation" teams from different units and schools - it is said to be cooperation, but in fact they come to do experiments.

After all, the foundation of the laboratory is Yuanxin's physics laboratory, and as we all know, Yuanxin's physics laboratory is also called the "Su Yuanshan Laboratory" and is a top-notch laboratory built by Su Yuanshan at no expense.

The father and son did not alarm anyone else, nor did they engage in any formalism. They simply stayed in the office for a while and then went to the laboratory building.

After all, Su Yuanshan came to see his students.

As soon as he reached the door of the laboratory, he heard a fierce quarrel coming from inside. Su Yuanshan was about to stand at the door and eavesdrop for a while, but unexpectedly it was opened, and then he saw Jiang Chao standing at the door with an angry look on his face.

"Professor? Principal..." Jiang Chao bumped into Su Yuanshan. When he saw Su Yuanshan frowning slightly and saw Su Xinghe standing behind Su Yuanshan, he immediately held the door.

"What were you arguing about just now?" Su Yuanshan's tone was not serious, but his face was not so pretty - although he didn't hear clearly what the argument was about just now, he could tell who was arguing with whom.

Jiang Chao was arguing with Wenleyton.

These two people are already in their third year of study this year. The two of them have been getting along very well in the past few years - at least on the surface, and the two of them are extremely attentive to the topics given by Su Yuanshan and work closely together.

Now that the experimental conditions are in place and it's time to wait for the results to come out, what do they have to argue about?

Just after a while, Wen Leiden and several other graduate students came over, blocking the door and saying hello to Su Yuanshan and his son.

Seeing this, Su Xinghe smiled slightly: "Let's not talk about what you are arguing about, but let us enter the house first?"

…

After sitting down, Su Xinghe consciously sat behind his son and looked at his son with a smile - this was the first time he saw Su Yuanshan's "professor" side with his own eyes.

You know, I am not yet thirty years old!

"I'm warning you, if anything non-academic comes up in the lab, I'll get angry."

Su Yuanshan spoke first and then calmed down. After receiving a glass of mineral water from a master's student with a good eye, he said calmly: "Now you can tell what is going on."

Seeing that Su Yuanshan had been sullen since he entered the room, Wenlaiton and Jiang Chao looked at each other, both of them became a little nervous, and neither of them spoke.

Su Yuanshan frowned slightly: "Jiang Chao, you were about to rush out of the door just now. You were obviously very angry. Just tell me."

"Actually...it's nothing."

"Um?"

"Professor, let me tell you." Wenleyton, who was already very fluent in Chinese, took a step forward and said: "When we were doing experiments according to the experimental design today, Chao suddenly had an idea and wanted to change the experiment... "

Su Yuanshan was startled for a moment and immediately looked at Jiang Chao: "Why do we need to change the experiment? What do you think?"

"Yesterday when we were measuring the 30-degree twist angle state of double-layer graphene, I suddenly felt that it conformed to the structure of a quasicrystal."

"Huh?" Su Yuanshan was startled again! Then his eyes lit up.

"Tell me, how did you come up with the idea of ​​quasicrystals?"

In the 1980s, Israeli scientist Shechtman discovered an alloy image with five-fold rotational symmetry but no translational periodicity in the rapidly solidified Al Mn alloy, that is, an icosahedral quasicrystal. This quasicrystal is in the form of a puzzle. Composed of two different rhombus shapes.

At that time, this gentleman had already realized the significance of the discovery, so when he discovered it, he did not tell his mentor... but published the article himself.

Su Yuanshan knew that this gentleman would receive the Nobel Prize exclusively for the discovery of quasicrystals in a few years.

Well...same as him.

"It just suddenly occurred to me. When I was doing my thesis work in the past two years, I came across Shechtman's paper." Jiang Chao calmed down and immediately told Su Yuanshan what he thought.

The reason why he argued with Bruneiton was that he hoped to use the experimental opportunity to test the quasicrystalline properties of double-layer graphene. But Wenleyton saw no need to waste the opportunity to experiment just for his whimsical inspiration.

You know, this is the opportunity they have been waiting for three years, and it is also a task assigned by the instructor.

After listening, Su Yuanshan's expression softened.

"What kind of experiment do you want to do?" Su Yuanshan said, looked around, reached out and picked up the two graphene models on the desk and stacked them together.

The two models are made of acrylic material and can clearly show the overlapping state.

Su Yuanshan twisted the two graphene models to an angle of about thirty degrees, and then looked at them carefully. After a moment, he whispered: "Indeed, in this incommensurate structure, it is indeed similar to a quasicrystal. But generally We also believe that due to the loss of phase coherence due to interlayer interaction, the energy band structure between the two layers of graphene can be approximately regarded as the superposition of the energy band structures of two independent single-layer graphene."

"So, you want to observe their energy band structure?" Su Yuanshan looked at Jiang Chao again.

"Hmm..." Jiang Chao nodded: "I just want to treat it as a quasicrystal."

"Okay, come up with a design." Su Yuanshan smiled and nodded: "Graphene, as a two-dimensional material, has many possibilities. If you can think of it, just do it."

After a pause, Su Yuanshan looked at the other people and smiled gently: "You too, and ah, don't just focus on graphene, but also on the big field of two-dimensional materials, actively expand your ideas, and say Maybe someday I will be able to tear out what kind of vinyl? Even if other materials are unstable, they can still be mixed with tearing."