The boss starts with brushing achievements

Chapter 269 The first experience was not good
Compared with ordinary microscopes, the STM in this laboratory is a giant.

This behemoth makes it difficult for people to associate the word microscope with it.

It can be said that this kind of observation tool is not for people to see with the naked eye, but to present the atomic image on the screen through scanning.

After all, it is something at the nanometer level. If the naked eye wants to see it, human beings have to evolve in the direction of the eyes for several generations.

Moreover, myopia is rampant at present. Most of them can see clearly even one centimeter without eyes, and it is impossible to see nanometer level in vain.

Xue Mo walked up to STM in a hurry, and several teachers followed immediately. What they did was to ensure Xue Mo's safety.

"Student Xue, are you going to observe atoms?" a teacher asked.

Xue Mo nodded, but he felt that he was talking nonsense in his heart. If he didn't look at the atom, who would be free to watch STM?

"Can you cooperate with me, I need to activate the device." Xue Mo asked.

The teachers looked at each other.

"We are not professional in this field, we don't know how to use it!"

Xue Mo frowned: "What about your teachers in related majors?"

"Not here yet."

Xue Mo: "..."

He looked at this big guy again, and it would be a bit strenuous if he operated it independently.

"Please help me prepare some materials, and connect the power supply of this laboratory." Xue Mo ordered.

He wrote some words and handed them to a teacher who seemed more reliable, and asked him to prepare some samples for himself. These things should not be difficult to find in the university. After all, there are scanning tunneling microscopes, so there is no reason not to order samples.

Xue Mo took a closer look at the STM while they were preparing materials. It consists of three major departments: the scanning tunneling microscope, the control circuit and the control computer, which are measurement software and data processing software.

The main body contacts the atoms to be observed, and the control circuit releases the voltage and transmits the signals, and then the terminal computer processes it, so that the image of the atoms can be presented in front of Xue Mo.

A teacher at the side looked at Xue Mo's somewhat unfamiliar appearance, and couldn't help asking: "Student, have you used it before?"

Xue Mo was silent for a while, and replied: "I have used it."

But not in reality, but in a dream.

After all, it is an observation instrument at the atomic level, and what the biological side observes is at the cellular level, so Xue Mo has not touched the real thing of this thing. He also searched the method of use on the Internet first, and then practiced the operation in his dream.

I thought that if there is a teacher who can use it in the university, it will be enough to play the assistant by myself, but there is no such thing at all.

If he says he has never used it now, it is estimated that these people will not be able to let themselves use STM.

The students who were acting as spectators not far away were a little shocked.

This thing is not easy to operate at first glance, they have never seen it, or even heard of it, but the student who came today can still use it.

Sure enough, the gap between people can sometimes be too large to imagine.

While the audience was sighing, Xue Mo was controlling the STM nervously and cautiously.

After all, this is the first time I have come into contact with a real object. Although I have practiced countless times in my mind before, I can't be too careful now.

The main body of the microscope is composed of a plane scanning mechanism including the needle tip, a control and adjustment mechanism for the distance between the sample and the needle tip, and an isolation device for vibration between the system and the outside world. Although it looks complicated together, it is not as difficult as imagined in operation. Only follow the standard steps Come, there will be no major problems.

The commonly used STM needle tip will be placed on a piezoelectric ceramic support capable of three-dimensional movement, and Xue Mo can control the voltage applied on the x and y axes to obtain the desired new signal.

STM has two working modes, one is constant current mode and the other is constant height mode.

"The sample is here!"

The materials are in place.

Because the sample surface was not flat, Xue Mo could only choose the constant current mode.

Such a mode uses an electronic feedback circuit to control the tunnel current so that it remains constant.Then the computer system controls the needle tip to scan on the surface of the sample, so that the needle tip can move two-dimensionally along the x and y directions.

Since the tunnel current needs to be controlled to be constant, the local height between the needle tip and the sample surface will also remain constant, so the needle tip will perform the same ups and downs with the ups and downs of the sample surface, and the height information will be reflected accordingly. come out.

In this way, three-dimensional stereo information can be obtained.

Xue Mo only knows how to operate this thing, but he is still not very clear about its principle.

It seems that it involves the field of quantum mechanics. Xue Mozhen has never read so many extracurricular things.

Although none of the teachers know how to use them, they all have hands and feet and can help Xue Mo do some simple auxiliary tasks.

The teachers acted cautiously, and followed Xue Mo's instructions safely, without daring to overstep.

This high-tech thing is very valuable, if it is broken for your own reasons, it will be miserable.

They all regretted watching this excitement, wouldn't it be nice to just stay at home and take a vacation?
But the risks and opportunities are the same. If the people from the city are well received this time, they will be able to speak in front of the principal in the future.

Xue Mo didn't expect these people to have such extra thoughts when they were doing the experiment. He focused his demeanor and let the needle tip approach the sample slowly.

From the naked eye, the needle tip and the sample are already in contact, but at the microscopic level, there is still a large distance.

Xue Mo remembers that high school physics once taught that there are electrons orbiting outside the nucleus, which is similar to planets orbiting the sun, but there is a slight difference. The orbit of electrons is not elliptical. They are evenly distributed around the nucleus. The larger ones are on the outer layer, and the smaller ones are on the inner layer.

Speaking of layers, we have to talk about the electron layer, which is also the energy layer.

The energy of atoms is quantized, and the orbits of electrons outside the nucleus are discontinuous. They can be divided into several layers. Such layers are called electron layers.

At that time, he had also read the linear spectrum, and he studied it in depth during the competition.

According to the classical theory of electromagnetism, electrons revolving around the nucleus at high speed will continuously emit continuous electromagnetic waves from the atoms, while the spectral images of hydrogen atoms are observed to be discrete, which contradicts the calculation results of classical electromagnetism. Later, Bohr proposed the electron He successfully deduced the Rydberg formula describing the spectrum of the hydrogen atom, linking the Rydberg constant with Planck's constant, and the existence of electron shells has been recognized since then.

Of course, Xue Mo only knew the theory on paper, but hadn't actually touched it.

But he is also very yearning for this. If it is not for longevity, he will choose physics.

After all, there are too many interesting phenomena in the universe, whether it is microscopic or macroscopic.

Withdrawing his thoughts, Xue Mo continued to operate the instrument, which observed the xenon atoms on the surface of the metal nickel.

Xue Mo, who was in the experiment, was suddenly taken aback.

"What's wrong?" The assistants and teachers were quite frightened by his appearance, "Is there something wrong?"

Xue Mo shook his head: "No, everything is normal."

His first operation was very face-saving, without any problems, Xue Mo successfully obtained the atomic image.

But the moment he saw the image, he realized one thing, what he saw were atoms.

Although this was close to his goal, it was far from it.

In atoms there are nuclei, in nuclei there are neutrons and protons, and then there are even smaller quarks, which can only be detected but not observed.

I took it for granted, thinking that I can see atomic orbits when I see atoms.

He is also concerned about chaos, always thinking about creating atoms, but forgetting some basic knowledge.

Xue Mo sighed.

The assistant teachers are another thrill.

Xue Mo hurriedly said: "The experiment is completed, you don't have to be so nervous."

He turned off the STM, tidied up, and walked out.

The city leader came over and asked, "What's the matter, the experiment failed?"

"Not really." Xue Mo shook his head, "It just didn't achieve what I expected."

The city leader wisely didn't ask. After all, he didn't understand, so he could only apologize.

But he still said something beautiful: "Don't worry, there must be other ways."

Xue Mo nodded. What the leader said made sense. There was indeed another way.

He originally wanted to observe it intuitively, but it was definitely impossible, so Xue Mo could only study some literature to understand the structure of atoms and the way atomic orbits work.

It's just that it's hard to tell Xue Mo too much from pure literature, and there are no experts in this field in this city. Xue Mo still has to wait until the start of school to ask the teacher in the physics department.

Hey, the final result still has to wait until school starts.

Xue Mo's loss didn't last long. Looking at the bright side, he operated an STM this time and saw the atomic image formed on the screen with his own eyes. He will also go to the astronomical telescope later. It's a novel experience.

It's just that although Xue Mo really wanted to go to the astronomical telescope to look at the stars at night, it was really inconvenient at that time. He himself would rather stay on the observation deck alone, but others would not agree.

So in the end, Xue Mo could only look at the moon and Venus through the filter, which just slightly satisfied Xue Mo's astronomical dream.

At this point, the transaction was concluded, and both parties bid farewell happily.

It's just that Xue Mo's happiness is feigned, after all, he didn't get what he really wanted.

"Little Mo, why are you so sad?" Father Xue asked with concern when he came home.

Xue Mo glanced at his father and said dejectedly, "I didn't see the atomic structure and electron cloud."

Father Xue was taken aback: "What electric cloud? Is there thunder?"

Xue Mo: "..."

Xue's mother said from the side: "Don't get involved in things you don't understand, and do what you should do."

Father Xue rolled his eyes, was he wrong in caring about his son?

"It's not going well today?" Mother Xue also came over and asked with concern.

Xue Mo shook his head: "It went well, but the result was a little different from what I thought."

"Everything can't go your way, just work harder later." Xue mother said earnestly, "I know you have big things in your heart, but don't put too much pressure on yourself. Although you have been It's smart, but to put it bluntly, there's a lot of things that you can't do in one go."

Xue Mo's eyes moved slightly, and after a long time, he breathed a sigh of relief, and said with a smile, "Thank you mom, I understand."

Can a system man become a god?

No, at least not right now.

Except for the master in the dream, his other abilities are actually within the scope of human beings, but they are far from ordinary people, so some people praise him as not being human.

There is no need to focus on the creation of the atomic level for the time being. Xue Mo thinks that the most urgent task is to solve the problem of how to archive the master in the dream. If the archive problem is not solved, no matter how many things are created, it will be useless.

I just think so, but this matter is not so easy to solve, after all, this skill is illusory, and Xue Mo doesn't even know where to study it.

I can only see if I can think of something in a flash of inspiration in the future, or... use several other skills.

Years ago, many leaders came to see Xue Mo, from the province, the city, and the county, which made Xue Mo's family become mysterious in the villa area.

Villas in small cities are really cheap, especially townhouses. When Xue’s mother bought it for more than 300 square meters, it only cost more than 100 million. In the eyes of ordinary people, it is quite a large number, but at the level of villas It's really not expensive.

So anyone with a little money in this city can afford a villa, but there are not many people with backgrounds behind them, and even if there are, at most they are backgrounds in the city. How can there be several provincial leaders here like Xue Mo's house? .

The Xue family didn't care about this, but the other owners appreciated it, and they paid a lot of attention to their words and deeds, and some even thought about how to make friends.

"Our villa area is really hidden dragons and crouching tigers!" Father Xue said after slipping around outside, "I have met many big bosses of companies, who are much richer than us."

Part of the reason why rich people live in expensive communities is because the people they will come into contact with are all rich people, which is good for their further development.

But Mother Xue didn't think so much at the time.

"You didn't promise anything blindly, did you?" Xue's mother stared at Xue's father and asked.

"No way." Father Xue smiled, "I'm not as stupid as before."

It's all mixed up to this level, Father Xue is no longer the man who was just in charge of buying goods.

Mother Xue gave him a white look: "You still know you are stupid, see if there is a suitable one, we can talk about cooperation, now it is not easy to do offline, we should make appropriate changes."

In the past few years, the impact of online stores has become more and more violent. If Xue's small store hadn't used Xue Mo as its signboard and also operated online stores, its profits would have shrunk significantly.

The mall where Xue Mo went to shop was even in danger of going bankrupt. The cost was too high, and it was difficult to compete with online stores.

The world is changing all the time, and no one knows what will happen in the future. Maybe online stores will be able to try on clothes online in the future. If that happens, there should be no such thing as offline stores.

　Two chapters in one
　　
　
(End of this chapter)