A large part of the reason why many people are confused when they go to university is that the evaluation criteria have changed from one-dimensional to multi-dimensional.

In the past, when I was in high school, I often organized exams from the city to the school and then to the class, which allowed you to have a precise positioning of your grades in the whole school and even the city.

The one-dimensional evaluation criteria coupled with repeated tests make it easy for people to improve themselves.

At the university level, the evaluation system has become multidimensional, and the requirements for students are no longer just about test-taking ability. In high school, teachers never taught students what they could do and what they needed to do in college.

At this time, most people will fall into confusion.

Like Cao Yongluo, his family arranged it for him early on, and he only needed to follow the route planned for him by his family.

Zhou Xin came back from the era of information explosion and knew exactly what he was going to do.

As for Wang Wei and Li Li, after entering Yan University, they found that the papers were not as good as those of this group of volume kings, and they only had mid-term exams and final exams a year, and they didn't know what they had to learn to rank high.

Pure and pure blind box.

When they first entered the freshman year, the two of them also studied hard for a period of time, but the problem was that it had no effect, and their grades were only in the middle of the class.

Zhou Xin has a certain understanding of these, but he doesn't care.

For him, he plans to contact his previous mentor, Professor Hu Zhengming, as soon as possible.

After this period of data and information collection, Zhou Xin made it clear that this time and space was exactly the same as the time and space before he came.

He also searched for Hu Zhengming's information on the Internet, and if his speculation is correct, then Hu Zhengming's email address is still the same as before.

Because he has been studying for a doctorate with Hu Zhengming for four years, most of the other party's papers have either been read or learned through other paper citations.

This is not an easy thing to do, you must know that Hu Zhengming has more than 900 papers.

The reason why I want to find Hu Zhengming is that in addition to valuing the other party's status in the academic world, what is more important is the other party's connections in the industry.

"Dear Professor Hu Zhengming,

I read your paper on improving the degradation model of the thermal-electron-induced MOSFET and I have some new ideas that I can use to improve your optimized mathematical model......"

Zhou Xin's plan is very simple, he still has to find Hu Zhengming, go to Berkeley to get a doctorate, and then use the leading edge of technology to start a business in Silicon Valley.

After the success of the business, he returned to China.

Now it is too difficult for this identity to start a business in China.

In other words, it is too difficult to engage in semiconductors.

After a little preparation, Zhou Xin sent a paper to Hu Zhengming's email address about the further optimization of the MOSFET model.

Hu Zhengming has been teaching at Berkeley since 1976, and his email address has not changed.

Starting from the actual MOSFET transistor, the mathematical model in the field of complex physics is Hu Zhengming's proud work.

The paper, published in 1985, has been cited nearly 2,000 times, making it the second most cited by him after the FinFETch architecture.

In this era, the mathematical model was selected as the first and only international standard for designing chips by the Transistor Model Council, which is attended by 38 major companies internationally.

Since the publication of the paper in 1985, various studies have been conducting attempts to improve the model.

In '94 there was an attempt to optimize the model with thin nitride oxides, and in '95 there was an attempt to optimize the model by thermal re-emission of electrons.

But these studies are all about optimizing MOSFET transistors at the material level, by changing the transistor material.

It has not been possible to start from the mathematical model level and optimize the results of Hu Zhengming's MOSFET model.

You must know that thirteen years have passed since 1985.

Professor Hu Zhengming, who is far away in the San Francisco Bay Area, checks his mailbox every morning as usual.

E-mail has been around for more than a decade, and in the past decade, scientists from all over the world have communicated more frequently thanks to e-mail.

For Hu Zhengming, the first thing he does when he arrives at the office every day has changed from checking paper emails to checking emails.

An email titled MOSFET Model Optimization quickly caught his attention.

After all, as the creator of the model, Hu Zhengming himself hopes to be able to further optimize it.

Unfortunately, neither he nor any other scientist has been able to optimize MOSFETs from the perspective of mathematical models.

“...... This critical energy and observed time dependence can be explained by a physical model involving the breakage of the = Sis H bond. The device lifetime is proportional to the I-2sub 9 I1d9ΔV15t. If the isub becomes larger due to reasons such as L is small or Vd is large, then τ will become smaller. Therefore, Isub (and possibly light emission) is a strong predictor of τ.

It has been found that the proportionality constants vary by a factor of 100 for different technologies, which holds the promise of a significant increase in reliability in the future through improvements in dielectric/interface techniques. A simple physical model can correlate the channel field EM with all device parameters and bias voltages. Its use in interpreting and guiding thermoelectron scaling is described. ”

Because the mathematical model constructed by Hu Zhengming is very simple, it simply depicts the essence of MOSFET degradation.

The simpler the model, the harder it is to optimize.

But the email provided Hu Zhengming with a new perspective to think about the issue.

The optimized mathematical model is able to explain more phenomena and thus better monitor the phenomenon of thermoelectron scaling.

In order to read this email, Hu Zhengming completely forgot that there was such a thing as coffee.

After he finished reading the core part, he looked back and looked at who sent him the email, zhouxin@, the email from Yan University.

"Zhou Xin? I haven't heard of such a number one person in the field of Yanda semiconductor? And it stands to reason that papers shouldn't be posted? Hu Zhengming was very puzzled in his heart.

Generally speaking, people who can make this level of innovation will not be unknown.

Hu Zhengming read the last part of the email, and the last part of the email expressed his hope to come to his staff to study for a doctorate.

Hu Zhengming only now understood why the other party sent him this email.

It turned out to be this way to attract his attention.

He had received similar emails from Chinese students before, trying to get a letter of recommendation from him by expressing his views on scientific research and his thoughts after reading some papers.

Twenty years later, it's called magnetism.

It's just that the cross-border mail of these Chinese students is an idea at best.

And what Zhou Xin sent over, adding a little summary, can be called a complete paper, but a paper that can be published in the top journal.

Hu Zhengming plans to reply to the other party by email, make a phone call, and talk in detail.

It is rare for such a high-quality paper to be written by a college student.

Hu Zhengming hopes to further confirm the other party's level through a direct call.