Civilization Template

Chapter 90 MEMS
West Germany, Brunswick, Wolfsburg Airport.

The 30th World Olympiad gold medalist, Wei Chunyu, walked out of the luggage hall.

Looking at the colorful flags of "Technische Universitt Braunschweig" (Braunschweig University of Technology) standing in the reception hall, he let out a long breath.

"I, Hu Hansan, finally came back!"

In order to go through the formalities for studying abroad, Wei Chunyu's legs were running thin in the past month or so.

It stands to reason that at this point in time, one month is definitely not enough for him to complete all the procedures from passport to visa, but since the popularity of the International Mathematical Olympiad gold medal has not faded, many parties have given him the green light.

Among other things, it was just that his business passport was not handed in according to the regulations after returning to China, which saved him more than three months.

If the passport is handed in in Beijing, Wei Chunyu needs to re-apply for the passport in Zhejiang.In addition to the passport, he has to re-apply for the exit card.It took half a year to go through all the procedures.

In terms of visas, since there is already a West German visa in the passport, as well as entry and exit records, the new visa application went very smoothly.Within two weeks, the student visa came down.

If there is anything that makes Wei Chunyu dissatisfied, it is the plane ticket.

The last time he came with the group, he didn't realize it, but this time he spent money by himself, and he really felt the pain.A one-way air ticket worth thousands of marks almost bankrupted the Wei family.

If it weren't for his expectation of having a scholarship and not needing to worry about living expenses, the Wei family simply couldn't afford this kind of study abroad.

"Little Wei?"

Wei Chunyu was patted on the shoulder from behind.

"Brother Xing? You came early?"

Wei Chunyu had a good impression of Brother Xing who helped him a lot. "I'll trouble you to pick me up again, I don't even know what to say."

"Come, come, give me your luggage and put it in the back of my car. Let's go to eat first."

Xing Xiaogang was as enthusiastic as ever.

"It's not good, I'll let you pay when you come."

"It's okay. A few friends just want to see you. When they heard that you are here, they all want to welcome you."

"Want to see me? Meet me? Friends?"

Wei Chunyu was very surprised.

"Yes, these friends will be of great help to your green card application."

"They help with my green card application?"

Wei Chunyu didn't even know what to say.

"Yes. They are very interested in what happened in China. Just like you, the person who won the international gold medal is here."

"Participants? What parties?"
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Bingcheng, University of Technology, library.

Although the history of blue light LED provided by Huang Laoxie has some inspiration for Chen Quan, it does not directly help the project itself.Because Chen Quan didn't have enough effective information, and his knowledge structure determined that he couldn't start from scratch.

But the help of the MEMS clue is too great.

MEMS, the full name is Micro Electromechanical System (Micro Electromechanical System).

The basic principle of MEMS is to use the semiconductor technology developed from the photographic technology to process micro-electromechanical devices or instruments with moving parts.

When most people talk about processing, the first thing that comes to mind is machining processes such as vise washing, planing and grinding. Expanding it, it can also include casting, forging, stamping, etc.

But with the PCB process, and the semiconductor processing technology extended from it, a new method has emerged.

The basis of the semiconductor process is the steps of depositing, covering the protective layer, illuminating, and rinsing.Through these steps, the surface of the object is repeatedly covered with layers of different pattern materials.

MEMS, on the basis of semiconductor technology, is improved to process tiny three-dimensional structures.

Give a simple example to explain the realization principle of MEMS.

Build a house on the ice. After the house is built, melt the ice and the house will be built in the air.

Of course, the actual situation is more complicated than the example, such as providing support for the house and preventing it from falling.But this example is a good illustration of how to use superposition to make hollow components.

These components can perform a small amount of movement in a small space.

This movement, if used as actuation, is called a microactuator, and if it is used as a measurement, it is called a microsensor.

In Chen Quan's plan, no matter what he does, the ultimate goal is to win "Perfect Race".In a few years, publish some high-quality papers and win the war against an imaginary enemy like Ivan.

MEMS has been a popular fried chicken in the technology industry for the past two years.Its cause is the world's first rotatable MEMS motor developed by the University of California, Berkeley in 1988.

This micro-motor processed by semiconductor technology caused a sensation in the world as soon as it came out, and ignited the world's attention to the MEMS field.Its status and fame have directly caught up with the field of superconductivity, which has been hot news all year round.A large number of scientific research institutions have invested their strength in researching other types of micro-motors.

As soon as this kind of micro-motor-related papers appeared, it was a hit, not only with a burst of citations, but also going out of the circle and being widely publicized by the press.Its citation factor is estimated to directly exceed one thousand.

Although the project in Chen Quan's "memory" is not the most popular motor actuator project, but a sensor, it should not be too difficult to publish a paper in a journal with an SCI factor of more than 3.

This kind of journal paper with an SCI coefficient of 3 can basically be used as a hard condition for evaluating professors in the late 80s.

Chen Quan and Qu Yanqiu estimated that the other contestants in "Perfect Race" should not exceed the level of undergraduates, otherwise it would be too foul.

For undergraduates, this kind of paper is enough, regardless of its influence or level.

The MEMS sensor project in "his" memory can fully meet Chen Quan's promotion needs.

With clues, there is immediate action guidance.

Chen Quan and Qu Yanqiu, two people, divided into two groups.Chen Quan went to check the information, because the information is all in English.

And Qu Yanqiu began to build a corresponding technical reserve.

Since MEMS is called microelectromechanical, then machinery, and electronics, are still the basis of everything.So, a lot of textbooks were dug out.

In front of Qu Yanqiu, a large table was filled with textbooks such as theoretical mechanics and material mechanics.

"Now I finally understand why they recalled the AI ​​and put me back."

The subject of Qu Yanqiu's speech switches back and forth with the AI ​​at any time.She sometimes calls herself Qu Yanqiu, but when needed, she calls herself AI.Chen Quan has long been used to her way of speaking.

"Oh why?"

Chen Quan became interested.The two have revisited the matter several times. The purpose of "they", as well as the style of behavior, are always the things that Chen Quan and his wife care about most.

"You see, after college, there are so many things to read."

Qu Yanqiu pointed to the various textbooks on the table.

"Even if they don't recall the AI, they need to release me at least 7 hours a day and study for about [-] hours. Go to sleep, most of the time, I am actually in control. Even if it takes time, I will slowly regain my body dominance."

"Oh? Do you have such a hard time reading?"

Chen Quan was a little surprised.

In his impression, no matter AI or Qu Yanqiu, they only lost to him in competitions, and at other times, they were like crushing existence to him.

"Nonsense! Is there anyone who can read a book like you, with ten lines at a glance?"

The reason why Qu Yanqiu found it difficult to read was also stimulated by Chen Quan's speed.

"Actually, I just scratched the surface."

Chen Quan quickly put down the materials in his hand. "The memory left by [him] is also leap-forward, so I can roughly understand many things. If I want to fully grasp it, I need to put in a lot of practice and energy just like you."

"By the way, how is your progress?"

"There has been some progress, but it's far from smooth."

Chen Quan shook his head.

(End of this chapter)