I Have a Research Support System

Chen Wanqing put on disposable PE gloves, picked up a random substrate with tweezers, and shone it on the fluorescent lamp on the ceiling.

Not bad, it's very clean, she first admired, then changed the subject:

However, the substrate was placed upside down. It was my negligence. I just forgot to teach you how to identify the front and back.

Fortunately, this petri dish is relatively clean, so it's not a big problem, as long as each piece is checked again.

She signaled Xu Qiu to come to her side to observe, and continued:

Take the substrate to a place with good light, look at the substrate from the side, and then rotate the angle slightly up and down.

At this time, when viewed from the side with ITO coating, you can see a continuous light blue or purple pattern, which is the front side; while viewed from the reverse side, the pattern is intermittent.

Okay, let me try. Xu Qiu also picked up a piece with tweezers and observed it under the light.

Under the light, the ITO coating has a faint blue-purple color.

According to the method given by his senior sister, he quickly identified the front and back of the substrate, put it face up, and put it back into the petri dish.

Then he picked up another piece, held it up to the light, put it back, and picked up the next piece...

In less than a minute, all 11 pieces were put back together.

Xu Qiu, you're learning too fast. Chen Wanqing randomly checked a few pieces, and praised: You have a good talent for scientific research.

Isn't it easy to learn this at a glance? Is it that difficult? Xu Qiu was puzzled, but said calmly on the surface:

It's all taught by senior sister.

Don't flatter me, Chen Wanqing sighed softly, When Mr. Wei taught me before, it took me almost half an hour to learn, and he always beat me up.

Xu Qiu thought of the scene when Mr. Wei entered the laboratory, so he asked curiously:

By the way, Teacher Wei looks very kind, but can he be fierce?

Um……

Chen Wanqing replied perfunctorily, obviously unwilling to talk more.

Seeing this, Xu Qiu had no choice but to change the subject:

I continued to clean the substrate, and just installed a few more brackets, this time I can wash many pieces at once.

Okay, thank you for your hard work, junior. Chen Wanqing put on a smile again.

…………

Two hours later, Xu Qiu installed the last clean substrate.

Then he took off his mask and gloves and threw them into a special trash can. After exercising in situ for a while, he took off his lab coat and hung it on a hook beside the wall.

Although the air conditioner in the laboratory was adequate, Xu Qiu was still sweating all over, and even the back of the lab coat could be seen with obvious water stains.

Doing scientific research is also physical work.

Looking at the system interface, the proficiency has risen a lot again.

Privilege Level: 1

Points: 200

Tasks in progress: 1

Proficiency:

【Experimental operation class】

Clean the substrate (third stage 30%/fourth stage 50%)

【Instrument Equipment Tools】

Ultrasonic cleaner (fourth stage 50%/fifth stage 0%)

Tweezers (third order 60%/fourth order 50%)

Nitrogen Gun (30% Tier 3/50% Tier 4)

[The task has been completed, and 100 points have been obtained. 】

[Obtain Novice Mission III. Raise the proficiency of any experimental operation to level 4 or above, and reward 300 points for completing the task. 】

The new task is similar to the previous one, you just need to continue to improve your proficiency.

It's a pity that he didn't have a chance to complete the task today, because he invited his roommates to have dinner together in the evening.

Xu Qiu found that with the improvement of proficiency, his understanding of the experimental operation has been improved.

He is no longer bound by the standard process, and can improve it according to the actual situation:

For substrates with a lot of residue on the surface, prolong the cleaning time in soapy water to 40 minutes, which can be cleaned more easily.

For cleaner substrates, the soapy water cleaning process can be omitted and start directly with deionized water.

Moreover, through observation and analysis, the purpose of each cleaning operation is roughly understood:

Soapy water is a rough wash, which can wash off most of the electrode material or coating remaining on the substrate;

Deionized water can wash away inorganic impurities;

Acetone can wash away organic impurities;

Isopropanol has a low boiling point and is easily volatile, allowing the substrate to dry quickly under a nitrogen stream.

In addition, Xu Qiu arranged the time reasonably and dried the substrate at the same time while waiting for the ultrasonic cleaning, which greatly improved the work efficiency.

Of course, there are also disadvantages, that is, continuous rotation, which consumes a lot of energy.

In the end, Xu Qiu got a total of 60 clean substrates, which were fully loaded into five petri dishes.

He lays it out in the form of arhats, protecting the ends with both hands, like holding a giant hamburger.

When Chen Wanqing saw the one, two, three, four, five boxes of substrates that Xu Qiu had washed, she said in surprise:

This... this is too much.

After finishing speaking, she patted her forehead and said:

Oh, I forgot to remind you just now.

Generally, there is no need to blow dry so many, two boxes are enough, and the rest of the cleaned substrates can be soaked in isopropanol directly, and then blow dry when needed.

Xu Qiu spread his hands helplessly, why is this senior sister so cute and cute, it seems unreliable.

Sorry, Chen Wanqing said with an apologetic face:

Leave the substrate for me to deal with at night, thank you for your hard work today.

It's okay, it should be. Xu Qiu said.

Chen Wanqing added: By the way, if you come to the laboratory in the future, you'd better choose some fixed time, so that it is convenient to arrange work.

The working hours of our group are from 9:30 to 11:30 in the morning, from 1:30 to 5:30 in the afternoon, and from 7:30 to 10 in the evening. Monday to Thursday all day, Friday morning and afternoon, Saturday off, Sunday afternoon and evening.

There is no class on Sunday, and everyone is usually there, so it is best to come.

Of course, since you are an undergraduate student, Mr. Wei probably won't take care of you.

Scientific research also has 996 blessings. Xu Qiu complained silently in his heart, and then looked at the class schedule.

There are 14 credits of courses in this semester. One credit roughly corresponds to one class, and the amount of courses is not too much.

Seeing that there are fewer classes on Tuesday (today), Thursday, and Friday, Xu Qiu replied: How about the afternoons of Tuesday, Thursday, and Friday, plus Sunday.

Okay, Chen Wanqing took a note and said:

If you have something to do, just tell me in advance, and you can come over at other times if you want to. Come, add WeChat first.

drop.

Xu Qiu looked at the senior sister's WeChat, her nickname was her real name, and her profile picture was a travel photo.

Finally, Chen Wanqing handed over three more bound paper documents and said:

These are three documents on organic solar cells. You can take a look at them first. If you have any questions that you don't understand, you can mark them down and ask me next time.

Xu Qiu took the document and weighed it, the weight was not light, stuffed it into the bag, and bid farewell to the senior sister.