Chapter 471: The concessions made before, now all need to be repaid

Xu Qiu returned to 216 and went to Ctrip to check the status of the ticket home.
Because it is a temporary intention, the time to go home is relatively short, and the factor of the New Year is superimposed, so the price of air tickets is generally more expensive. Looking at it, the price is not lower than four digits.
However, the ticket price for returning to the magic city from home is much cheaper.
In the end, Xu Qiu made an appointment to buy a ticket to go home on January 25 and return on February 18. The single flight time is about three hours.
Among them, the former costs about 1,500, and the latter only costs about 800. In addition to the fuel surcharge for machine construction, the total round-trip cost is about 2,500 soft sister coins.
Now, the domestic basic transportation construction is already very strong.
Before, when Xu Qiu entered the magic city in his freshman year, because the hometown airport was not built, he chose to take a train to the provincial capital first, and then take a plane to the magic city, with a stop of one hour on the way, plus The total time to get up is half a day, not much better than taking a train.
Therefore, Xu Qiu chose to train for 20 hours later. The main reason was that it was more trouble-free. There was no need to change trains back and forth. He bought a sleeper and lay down for a day and went back.
In fact, this is also a common choice of the people. When it comes to domestic long-distance travel, people are still more inclined to choose trains rather than planes.
On the one hand, the train is cheap. If it is the price of a hard seat, Xu Qiu will only spend less than 100 yuan to return home. After all, the country is still a developing country, with "over 600 million people with an average monthly income of about 1,000."
On the other hand, there are a lot of people in the country. Because of the high passenger capacity of trains, the construction of domestic railways is very developed. Most cities can be reached by railway.
If you are in a beautiful country, the main long-distance travel method is airplane, and the railway construction is lagging behind our country.
After Xu Qiu booked the plane ticket, he went to 218 to report to Wei Xingsi, in other words, to ask for money.
Wei Xingsi was very refreshed and did not procrastinate. He directly transferred 2500 soft sister coins to Xu Qiu, and asked: "Before you board the plane, remember to go to the airport counter and ask if you can print the itinerary."
"Itinerary?" Xu Qiu had only made a flight before, so he didn't understand this aspect, only the ticket and boarding pass.
"Yes, itinerary." Wei Xingsi briefly explained: "Itinerary is the only reimbursement certificate recognized by the school, and it will be used for reimbursement later."
"Okay." Xu Qiu nodded and didn't ask much. He went back to 216, and searched for relevant information about the "ticket itinerary".
This can be regarded as an occupational disease for scientific research. Xu Qiu always wants to find out when he encounters something unfamiliar.
Knowledge is never too much, maybe when you will use it later.
After searching, Xu Qiu learned that air tickets are indeed different from ordinary train tickets.
The train ticket itself can be used for direct reimbursement, but the ticket is different. The passenger gets a boarding pass and cannot be used for reimbursement. If you want to reimburse, you need to print the itinerary.
If the ticket is booked directly on the airline's official website, you can find the corresponding airline counter before boarding and request to print the itinerary.
However, if you purchase tickets from a third-party ticketing company, such as Ctrip, you may not be able to print the itinerary at the corresponding airline at the airport, because the itinerary can only be printed once in theory.
The third-party ticketing company usually prints it out for passengers in advance. If necessary, the third-party ticketing company can send it by mail.
In addition to the itinerary, the third-party ticketing company sometimes provides an electronic invoice, claiming that it is a valid reimbursement voucher just like the itinerary.
But in fact, only the itinerary is recognized when reimbursement is made by the Magic University.
However, the electronic invoice has one advantage, that is, it does not need to be mailed, it can be printed directly through PDF files, and the itinerary must be mailed, and the passenger usually needs to bear the postage.
Therefore, some people do not understand the rules, and want to save the postage in order to save money, so they choose electronic invoices.
As a result, after receiving the invoice, I was dumbfounded, and found that it could not be reimbursed, and then asked for the itinerary, but the other party refused to give it...
As for the difference between electronic invoice and itinerary for third-party ticketing companies, it is said that the two types of invoices are different in nature. The former third-party ticketing company needs to pay a tax rate of about 6%, while the latter's tax rate is about 9%.
In other words, if an electronic invoice is issued, a third-party ticket purchase idea may be able to earn a 3% difference.
The high probability of this price difference is gray, but this is not necessarily the same as the invigilator cheating on an exam.
There are many things that the country sees and will not take care of it. It may wait until a certain moment before unifying the final accounts, and collectively carry out rectification and liquidation.
Xu Qiu didn't know or didn't know before. After understanding, he found a small itinerary with so many doorways in it.
As the holiday approached, Xu Qiu, Wu Feifei and the others dealt with the chores in the laboratory together in the next few days.
First of all, it is to connect with the Magic City glove box manufacturer to discuss how to plan the glove box.
Because the needs of different research groups and the space of the laboratory are not different, the glove box manufacturer will not only provide standard style glove boxes, but also open up customized functions for customers.
Wei Xingsi’s research team is no exception here. According to the previous plan, the original two glove boxes need to be spliced ​​with the new one.
That is to buy a new spin-coated glove box, the original function of the spin-coating and evaporation glove box remains unchanged, and the splicing is carried out according to the "spin coating-evaporation-spin coating" mode.
In this way, the left hand is organic, the right hand is perovskite, and then the evaporation is stuck in the middle.
However, when they asked Duan Yun to design the specific processing drawings, Xu Qiu and the others found that there were still many problems that needed to be solved.
Not to mention which of the new spin-coated glove box and the old spin-coated glove box is used for organic and which is used for perovskite, this involves the interests of their respective teams.
One of the biggest problems is that there is an evaporation cabin in the middle evaporation glove box.
The vapor deposition cabin is opened sideways, that is to say, a lot of space needs to be reserved on the left side of the vapor deposition glove box.
If the evaporation glove box is stuck in the middle, the connection between the evaporation glove box and the spin coating glove box located on its left hand side needs to be very long, which is not conducive to the usual transfer of substrates, materials, Reagents.
It is easy to imagine that the length of the transfer compartment of a normal glove box is 40 cm. With this length, it is difficult to take out the contents of the transfer compartment when operating from the glove box. It is usually necessary to manually place the items before transferring the items. Go to the inside of the transfer compartment near the side of the glove box.
Now because of the vapor deposition cabin, it is necessary to reserve about 80 cm of space. If such a long transmission cabin is really designed, it is estimated that only the gibbons can take things out of it.
However, it is possible to install a pallet with a slide rail in the transfer cabin.
But if there is a tray, the originally cylindrical transport cabin will become a cylinder that has been chopped off. Not to mention the significant shrinkage of the internal space. The space pulled out by the tray must also be reserved, which will also occupy The space inside the glove box is also not very convenient.
If you want to modify the vapor deposition chamber, it is also quite troublesome.
Because the evaporation equipment is from a vacuum company in Shencheng, not from the Magic Glovebox Company, if you want to transform it, you need to call someone from Shencheng Vacuum.
In order to solve this problem, there is a high probability that the structure of the glove box needs to be redesigned.
Therefore, Xu Qiu, Wu Feifei, and Duan Yun gathered together to discuss.
Because Duan Yun is about to graduate, he also has no intention of participating in too much laboratory construction. The main reason is that Feifei Wu was brought over and is responsible for issuing CAD drawings. Although it is docked with the Magic Glovebox Company, it is not a PPT drawing. No, but if you use CAD, you will look professional.
Xu Qiu first proposed: "One solution is to add another evaporation glove box, that is, to create two "spin coating-evaporation" two-link modes."
Afterwards, Xu Qiu changed his words: "However, the budget is tight, and it needs more than 40W. Now the budget given by Teacher Wei is 20W."
"Well, the budget can't be too much, otherwise the pressure on Teacher Wei will be too great. Now several funds in our group are about to expire." Wu Feifei thought for a while and proposed:
"I think we should separate the evaporation and spin coating, and then we will buy a spin coating glove box of the same size. The only problem is that the device may be exposed to oxygen for a short time during the transfer process, but it should not be a problem. Big, now the two-dimensional perovskites are quite stable..."
In fact, oxygen leakage during the transfer of the device is also an old problem in Wei Xingsi's research group.
However, Xu Qiu tested in a simulation laboratory and found that this problem has little effect on relatively stable devices such as ITIC, and the efficiency degradation may be around 0.1%-0.3%.
Therefore, Xu Qiu did not deliberately consider this issue before.
After all, it is impossible to have a perfect experimental environment in reality. When optimizing conditions, one can only focus on the big and let go of the small.
That is to give priority to those conditions that have the greatest impact on the performance of the device-the material of the effective layer and the processing technology.
For example, if vapor deposition is usually required, first cover the petri dish containing the spin-coated substrate with a lid so that there is a nitrogen atmosphere remaining in the glove box inside the petri dish.
Then transfer the petri dish to the transfer compartment of the spin-coating glove box;
Then, quickly take out the petri dish containing the substrate from the transfer compartment of the spin coating glove box, transfer the petri dish to the transfer compartment of the evaporation glove box within ten seconds, and immediately vacuumize.
In this way, as long as the speed is fast enough, it is possible to prevent the device from contacting the air as much as possible.
"I don't think there is any problem with your proposal, but it always feels like you are back to the starting point after a circle." Xu Qiu said:
"With this design, it seems that there is no need to line up the glove boxes, just three separate glove boxes."
Wu Feifei nodded: "Yes, three glove boxes, one is responsible for perovskite spin coating, one is responsible for organic spin coating, and the other is responsible for vapor deposition. It is similar to the laboratory in Handan, except that there is one more glove box. ."
Although Wu Feifei's proposal is not unacceptable, Xu Qiu still wants to stick to the original idea of ​​platooning to see if there is any alternative.
Xu Qiu's brain was swiftly running, and suddenly he had an idea, and said: "I have an idea, we can add two glove boxes."
"Two glove boxes?" Wu Feifei wondered: "But our budget is only 20W, so we can't buy two."
Xu Qiu explained: "The standard glove box is indeed 18W-20W, but if they let their glove box company make the smallest box... I checked, the price can be as low as 12W, so that two boxes can be added. It’s 24W, which doesn’t exceed the budget too much.

Wu Feifei nodded: "Specifically."
Xu Qiu continued: "My idea is to use the original spin-coated glove box as a place to store solvents and medicines, without spin-coating, and then buy two new glove boxes separately, one for spin-coating organic systems, and the other One for the spin-coated perovskite system."
"Um..." Wu Feifei looked thoughtful: "This is indeed a good plan, which can avoid the influence of solvent atmosphere on the spin coating operation to the greatest extent."
"It is not only the direct cross-influence between organic and perovskite, but also the influence between organic and organic, and between perovskite and perovskite. After all, even if the same organic or the same perovskite, different systems The solvent used will also vary."
"Moreover, now that the old spin-coating glove box has been used for many years, the self-processing ability of organic solvents has also been reduced. At the same time, there are a lot of solvents stored in it. Glove box."
"If we follow my method, we will still face the problem of who uses the new one and who uses the old spin-coated glove box. If we use the new glove box now, this problem will not exist."
After finishing the analysis, Feifei Wu nodded and said: "I agree, Xu Qiu, your method is indeed better."
"So... the result of your discussion is the'spin coating-solvent storage-spin coating' triple glove box, and the vapor deposition glove box is placed separately." Duan Yun asked in a voice: "Are you sure? If you are sure, I CAD drawing is about to be drawn."
Xu Qiu waved his hand and said, "Senior Brother Duan Yun, don't worry, we have to calculate whether the laboratory space on the Jiangwan side is enough and whether it can be put down."
Duan Yun let out a "um" and began to calculate: "The placement of the glove box is mainly based on the length. The standard glove box is 1.6 meters. If the small box is 1.2 meters, the two transmission compartments in the middle are Counting 40 cm, there are two more large cabins on the side, each of which is 60 cm, and the total is 6 meters.
Looking at the drawings, Duan Yun quickly concluded:
You can put it down, that is, the vapor deposition glove box on this side can’t be lined up in a row. It can only form a shape of a broken line, just like this, similar to a Capital'τ'."
Xu Qiu also leaned over and took a look: "Fortunately, some space was reserved before to deal with emergencies. Otherwise, if the location was stuck before, now you can’t change it if you want to... By the way, Feifei Wu, you have What should I add?"
"There is still a matter of gas path." Wu Feifei said.
"Well, this is indeed a problem. I almost forgot that our laboratory at Jiangwan now uses centralized gas supply," Xu Qiu nodded and analyzed:
"Fortunately, we reserved two air connections before. Now the glove box that stores medicines in the middle does not require a nitrogen gun, and the air circuit is sufficient. Are there any other questions?"
Wu Feifei shook her head and said, "There should be no other problems. The main thing is the budget."
Xu Qiu spread his hands: "That's what Teacher Wei will have a headache for. We only need to put forward the best plan, and we still need to rely on the tutor to make money."
"That's it." Wu Feifei began to direct: "Senior Brother Duan Yun, you come to draw the picture, Xu Qiu, you will be responsible later and go to Teacher Wei and say."
Xu Qiu and Duan Yun said in unison: "What about you, Feifei Wu?"
Wu Feifei stayed for a while: "Or, the little girl would sing a song for everyone?"
Xu Qiu and Duan Yun have a black line: "Excuse me..."
Feifei Wu is a famous "Laboratory Dead Song". It is estimated that even a million tuner will not be able to tune it back. They don't have the courage to listen to Feifei Wu sing a song.
Duan Yun worked very efficiently and quickly gave out CAD drawings.
Xu Qiu prepared the materials and went to 218 to find Wei Xingsi to report the results. He was quite satisfied with the plan.
Although limited by laboratory conditions, funding, and laboratory area, it cannot be compared with Gong Yuanjiang, but it is still one of the best solutions to the current conditions.
Xu Qiu chose "to report the good news first, then report the worries", and said to Wei Xingsi: "We have already discussed the design of the Jiangwan glove box."
"Considering that the glove box that was originally used for spin coating has been used for a long time, we now plan to use it exclusively for storing solvents. It is placed in the middle and two smaller glove boxes are placed on both sides for spin coating organic and calcium. Titanium ore devices."
"That is a three-row glove box and a separate vapor deposition glove box."
"In this way, the atmosphere inside the two spin-coating glove boxes can be maintained very well, and there is no contamination of the glove box atmosphere by the stored solvent."
"Secondly, because the standard glove box is purchased, it is available in stock, so you only need to pull the current glove box over and splice it. The construction period can be greatly shortened.
"However, if you buy two small glove boxes, the cost of each of them will cost 12W, which adds up to 24W, which is a bit over budget."
"The previous plan was to buy one big one, now are you going to buy two small ones?" Wei Xingsi looked at the drawing, raised his eyebrows, then gritted his teeth, and said, "It sounds reasonable... then buy it. In terms of prices, I’ll go to talk to Magic Glovebox Company again to see if I can get a discount."
Then, Wei Xingsi continued to order: "After I have negotiated the price, you will meet with the engineer over there to finalize the details on the spot. Don't make it at that time, but it turns out that we can't put it in. In addition, we must hurry up. , Because time is running out.
"Okay." Xu Qiu nodded.
Wei Xingsi did his job more swiftly. Not long after Xu Qiu left his office, he called Xu Qiu again, saying that he had already negotiated with the glove box company:
"A total of 2 small boxes, according to the current design drawings, the cost of the cabinet plus the cost of modification, the initial price is 22W, if appropriate, the technical details are finalized on the spot, and the contract is signed. The meeting time is set on January 21. It’s this Friday."
For the glove box company, the transformation is not very difficult, because the glove box is originally just a metal box with good airtightness. The functional modules are all independently detachable. The main modifications are cutting, welding, Assembly.
In addition to the glove box, Xu Qiu and the others are also simultaneously discussing the relocation of the laboratory.
The moving company provided by the department was the same one that helped Zhangjiang Lab last time. The relocation date was set on Sunday on the 23rd, and it was a bit rushed in terms of time.
There will be a holiday on the 24th ~EbookFREE.me~, which is considered a backlash. If the relocation work is not smooth, it will affect the holiday.
But there is no way, because Xu Qiu's "Science" article must be published before the laboratory relocation plan can be initiated.
Otherwise, in case Xu Qiu needs to add any data, and as a result, the instrument cannot be used because of the move, he will be dumbfounded.
In addition, the review cycle for articles of a grade like "Science" usually takes a long time.
Now we start to move, and when the reviewer's comments come back, if we want to add any experiments or the like, the laboratory at Jiangwan has probably already been established, and moving late may also delay things.
Everything in the previous group had to make concessions for Xu Qiu's "Science" article.
Now it is time to repay the price of the concession.
PS: This chapter is a few hundred words short of 6K, and I will fill it up tomorrow.
High-speed text hand typing I have a list of chapters of the scientific research assistance system