Chapter 338: Industry specializing in surgery

【Book Friends Welfare~EbookFREE.me~ you can get cash or points, and iPhone12, Switch are waiting for you! Follow the vx public account [Book Friends Base Camp] to get it!
On Tuesday morning, Wei Xingsi went to Pudong Airport to pick up Lao, and then placed him in the Crowne Plaza Hotel next to the school.
Generally, the reimbursement standard for meals and accommodation expenses for foreign guests in universities is higher than that of domestic scholars. For example, if the domestic meal standard is 100 yuan per person per day, foreigners are almost 150-200 per person per day, and accommodation may be 300 domestically. Yuan per day, foreigners are 500 Yuan per day.
Like the last time Xu Qiu and Wei Xingsi went to Gong Yuanjiang for a meeting, it was a domestic exchange visit. They lived in a hotel, while the foreigner Bazan lived in a star-rated hotel.
As for the reason, Xu Qiu is not very clear. Anyway, he feels that, apart from the political disadvantages, the average treatment of domestic crooked nuts is basically higher than that of the Chinese.
In the afternoon, Wei Xingsi took Ronald from the hotel to the office, mainly to introduce him to the members of the research team, and took him to visit the laboratory on the Handan campus.
Xu Qiu had seen Ronald's photo in the literature before, but it was a headshot, his head occupies 80% of the photo, and it was still black and white. This is the first time I have seen a real person.
Ronald came alone, unlike before, Bazan brought a young and beautiful female translator. He is 50+ years old, wearing a shirt and slacks, and is tall. He is estimated to be 185+. The complexion is very white and the skin is not very good. Good, but the complexion is still good, the characteristics of crooked nuts are very obvious, and they belong to the kind that can confirm the identity of the other side's crooked nuts at a glance.
"Ronald, this is a member of my research team." Wei Xingsi first said in English, then switched to Chinese and said: "Everyone, please introduce yourself in turn."
"I am Xu Qiu, and my main research direction is organic solar cells." Xu Qiu first spoke, gave a brief introduction, and finally added: "Nicetomeetyou." (I am glad to meet you)
Ronald smiled back and said, "Youtoo." (The same for me)
Others also introduced themselves in turn. Wu Feifei, Han Jiaying, and Tian Qing are relatively fluent in English, while Chen Wanqing, Duan Yun, and Mo Wenlin are hard-handed in English listening and speaking, and they don’t speak very neatly, but they use everyday language to greet them. You can still understand it when you click.
After that, Wei Xingsi took Ronald to visit the laboratory, introduced various instruments and equipment, and finally led the foreigner to the machine testing CELIV and TOF.
When he saw a familiar instrument, Ronald's eyes brightened. After a few glances, he gushed: "Oh, this is an old-fashioned CELIV test device, using a signal generator and an oscilloscope... Now we have developed There is a new device that can be connected to a computer and export data in real time...If possible, I want to test it now..."
Xu Qiu was amazed by the side. The foreigner had just got off the plane and was so energetic that he didn’t suffer from jet lag, so he rushed to do experiments... If you are in the country, you can’t have a meal first, and then go out for activities at night. That's how it was arranged last time I went to Gong Yuanjiang to communicate.
"Some foreign scholars are like this. They really love the scientific research industry." Seeing the surprise of others, Wei Xingsi explained in Chinese, and then He Tian Qing said: "You should prepare a few samples, test them, and let them Ronald helps to see if there are any problems with the way we test and process data."
"Okay." Tian Qing took the order, put on the lab coat, and began to prepare samples, while Wei Xingsi took Ronald to his office and took a break.
Speaking of which, Xu Qiu met Bazan, a beautiful country, when he went to Gong Yuanjiang to attend a meeting. Although his English pronunciation has an accent, it is still easy to understand. Ronald’s English accent is heavier, of that kind. The big tongue sound will make the "l" sound "a", drag the sound.
The most important thing is that Ronald was born in a country where English is his mother tongue. His English is very fluent and his speaking speed is very fast. As a result, his words seem to surround three-dimensional sounds with lingering reverberations.
Wei Xingsi had lived in a beautiful country all year round, and there was no pressure to communicate. Xu Qiu needed to be very focused on listening to be able to understand, while Chen Wanqing, Mo Wenlin and others next to him were always in a daze. What foreigners are saying, I can't understand a word.
After the CELIV test, Tian Qing was mainly in charge, and Xu Qiu was watching.
The incentive for this exchange visit was an article published by Tian Qing that attracted Ronald's attention, but the main reason was that Ronald was more interested in the non-fullerene system he developed and wanted to come over and get a share.
After testing several standard sample systems, Ronald put forward several opinions. One is that when drawing the picture, the starting point of the current density increase of the CELIV image needs to be manually marked as the zero point, and the other is that the time scale of the test should be within the RC constant. , Otherwise it will produce larger test errors. The third is that individual devices have breakdowns and short circuits. The transmission layer material can be made thicker. Fourth, they have updated the fitting calculation formula of carrier mobility...
In the evening, Wei Xingsi hosted a banquet for foreign guests. The location was chosen at Xiaonanguo next to the Pujiang River, where Xu Qiu and Han Jiaying had visited before. The fellows in the research group went to have a meal together.
On Wednesday afternoon, Wei Xingsi took Xu Qiu, Tian Qing and Ronald out for a stroll.
There are two projects in total, climbing Sheshan and visiting Chenshan Botanical Garden. The location was chosen by Teacher Wei, which is quite healthy...
Xu Qiu murmured silently in his heart. Last time I went to eat "Laosheng" pork belly chicken, yesterday I ate "Xiaonanguo" magic capital dishes. This time it was mountain climbing and botanical garden. Could it be that Teacher Wei...
Because of the long distance, Wei Xingsi did not drive himself this time. Instead, he called a special car for a day and was responsible for picking up and dropping off.
On the way, mainly Wei Xingsi and Ronald chatting, "How is the weather in Northern Europe?", "Have you been to China before, and which cities have you been to?" Sometimes the topic turns to specific experiments. Tian Qing and Xu Qiu will add a few words .
The driver was very professional and kept silent and drove the car intently.
After walking for more than an hour, I finally came to the foot of Sheshan Mountain. Here is the National Forest Park. There are gates that limit the flow of scenic spots, but you can enter directly.
Although Sheshan is a mountain, it’s actually only about 100 meters above sea level. It’s almost meaningless. Xu Qiu feels that he has already climbed to the top of the mountain before he warms up. Tian Qing also has no pressure. The foreigner is in good spirits. Only Wei Xingsi is panting. It seems that it is usually lack of exercise.
After climbing Sheshan, the four of them went to the Chenshan Botanical Garden not far away. There is a fee here, and the fare is 60 yuan.
In fact, Xu Qiu was not very interested in such things as zoos, botanical gardens, and museums before. According to his thoughts, the Internet is so developed now. If you want to see what you want, just click the pictures and you will have them.
However, in the botanical garden and smelling the fresh air, Xu Qiu felt that his previous ideas were still a bit narrow. Looking at the photos is really not as good as experiencing it in person. After all, one is a two-dimensional picture and the other is a three-dimensional reality.
There are many kinds of plants here. There are all kinds of chrysanthemums outdoors, and there are various cacti, prickly pears, and phalaenopsis that grow in the desert indoors. Well, these are more recognizable, most of the other plants. Can't name...
The reason for recognizing the Phalaenopsis was that Xu Qiu and the school girl had chatted with her before and learned that she was allergic to this flower, so he took a quick look at the picture.
Few young people come here to visit, most of them are old men who bring their own family or old ladies from other families.
Before Xu Qiu noticed that there are also annual cards here. It is estimated that these old men and old ladies have obtained a new year card, and then come to visit twice a day, just like visiting a park.
This made Xu Qiu feel that maybe this is his life after old age?
On Thursday, at nine o'clock in the morning, the exchange meeting officially began.
This time Ronald’s exchange visit was not very dynamic. After all, his field is relatively small, and basically only overlaps with researchers in the organic and perovskite fields.
However, when the poster was posted, it still attracted some passersby from other research groups to come over to watch. All eight members of the research group were naturally present to act as a facade.
Ronald is from Abo Akademi University, Finland, Department of Physics, Department of Natural Sciences and Center for Functional Materials.
This exchange visit was not mainly about his work, but a summary report on the mechanism research in the field of organic photovoltaics, which was also required by Wei Xingsi.
Ronald talked on stage: "Transportation... deep trap state... Gaussian disorder model... Gaussian state density distribution... Space limited charge... Fermi level pinning phenomenon... Interface recombination..."
The reporting time was close to one hour, very professional.
This is also the first time Xu Qiu listened to a report from a purely theoretical researcher, giving him the feeling of taking the course of "Mathematical Analysis" before...
If you lose your mind a little, you don't know where the teacher is going.
Xu Qiu has some basic knowledge. He has had a lot of exchanges with Feng Shengdong and Tang Yunkun before, and has read some documents. So although some of them sound a bit difficult, they are basically able to understand the sevens and eights and have some gains. such as:
"Low charge mobility is a major factor limiting the efficiency improvement in the organic photovoltaic field."
"Traditional CELIV and SCLC methods for testing charge mobility are because they are testing devices. The magnitude of the mobility is basically the same, mainly because it is affected by interface recombination. If you want to compare the charge transport performance of different materials, the method of fabricating field effect transistors More appropriate."
As for the others, Tian Qing’s performance was pretty good. Wu Feifei and Duan Yun didn’t listen very carefully because their fields were not related. They were busy doing their own things. Chen Wanqing, Mo Wenlin, Han Jiaying, and Wu Shengnan tried to listen carefully, but Basically, I can't understand it. I can understand almost three or five words in one sentence, but I can only try to understand it against the PPT.
Xu Qiu found that there is still a big difference between scholars who are really engaged in theoretical research and those who engage in materials. There are many knowledge points in theoretical research, and the differences between different theories in the same field will be relatively large. In different systems, except for the different molecular structures of the materials, other test and characterization methods are almost the same, and it is not difficult to understand.
This is probably the reason why people who engage in theory are much rarer than those who engage in materials, because the threshold is relatively high.
At the very beginning, Xu Qiu was thinking about "left-hand material, right-hand theory, and CNS". Gradually, he realized that the power of a single person is limited after all. Just like the current ITIC system, if only he does it alone, No matter how good he is, working 16 hours a day, he can't be comprehensive, specializing in one or two fields at most.
Therefore, Xu Qiu didn't plan to go too deeply into the mechanics for the time being. It was enough to learn a little bit first, so that he could understand the conclusions made by others.
There is a specialization in the technical industry. At this stage, instead of spending a lot of time and energy to learn theory-related knowledge, it is better for him to provide a research system so that researchers who specialize in theory can do the research for a win-win situation.
Moreover, the system can play a greater role in material optimization, but has a smaller effect on the deepening of theoretical research. Basically, this improvement can only be achieved by Xu Qiu reading documents and books for half the effort.
The exchanges continued in the afternoon, but this time it was a private exchange, so only members of Wei's research group participated.
Tian Qing reported his CELIV results. Xu Qiu's report included two aspects. One was the exchange PPT with Gong Yuanjiang before, and the other was the latest progress on ITIC.
This was the first time Xu Qiu gave a speech in English, and he was still a little nervous. Fortunately, the audience was mostly familiar teachers and classmates, and the work was also his own work, and it was not too obvious.
Ronald was more interested in Xu Qiu's report on the ITIC system and asked many questions:
"What is the difference between this ITIC system and the traditional PCBM system?"
"Have the ITIC system tested the bright CELIV? What are the results?"
Xu Qiu answered one by one.
Finally, Ronald offered to offer: "If possible, when I go back this time, I will bring a batch of samples and conduct preliminary research."
Wei Xingsi immediately nodded and agreed and let Xu Qiu be responsible for arranging sample preparation. Xu Qiu changed hands and asked Mo Wenlin to start preparing for academic exchanges with the two standard sample systems~EbookFREE.me~. The PPT report is only one aspect, but the main purpose is still different. The research team reached a cooperation intention.
Wei Xingsi's research group provides a research system like this, Ronald is responsible for the research, and Wei Xingsi can publish articles with the results. Although it is not a first article, it is also an article.
For example, some bigwigs who have been working in scientific research for 20 to 30 years have published hundreds or thousands of articles. Many of them are collaborative articles produced by cooperation everywhere. It is almost impossible to produce so many articles on my own team. possible.
The academic circle is also a place where everyone carries the sedan chair.
On Friday, Wei Xingsi sent Ronald to the airport. Ronald took a dozen of well-sealed devices made by Mo Wenlin and boarded the plane back to Finland, officially ending the exchange visit.
The overall itinerary for this foreigner's exchange visit was similar to that of Xu Qiu's last meeting, except that they were guests last time and the host this time.
PS: Ask for a recommendation ticket on Monday, the second consecutive update.