Lin Yu was discharged from the hospital and went back to school as soon as possible, although he was absent, Luo Bing would also share his notes with Lin Yu, so Lin Yu also studied what he did not learn in class during this time.

"Yushen, are you okay?" Before the class started, Xia Yunyun and Shang Hao came over to ask questions.

"It's okay, I'm recovering well."

"That's good, by the way, the project that Sister Xu applied for is down, and the big guy will take us!"

"Okay", Lin Yu readily agreed.

Today is the morning class, and the rest of the time will be arranged by yourself.

After class, a few students followed Xu Ying to the laboratory, and they needed to feel that they were doing research on two-dimensional semiconductor materials, which was very time-consuming.

You must know that Lin Yu tested and synthesized in the system research institute, and it took a whole year to find two good fourth-generation semiconductor materials.

Coming to the special research room, Xu Ying explained some manufacturing methods of two-dimensional semiconductor materials, of course, mainly for three people other than Lin Yu.

Lin Yu came to another experimental bench with some materials, this part of the materials was Xu Ying hurry up to come, and now he is about to start copying his experimental steps in the system research institute.

He first used the guide mold method to prepare a four-inch gallium oxide single crystal, and then determined his various properties, and by the way, used instruments to analyze his various properties.

It wasn't going to end in a while, but he had to keep an eye on the experiment.

Although a preparation experiment has been carried out in the system research institute, the actual operation is still somewhat different.

After the morning passed, Lin Yu had almost completed half of the process, which was faster than others who had no clue.

Xu Ying brought them lunch, and several people walked out of the laboratory, had lunch in the lounge, and after resting for a while, they stepped into the laboratory again.

Another afternoon passed, and several people were immersed in the world of scientific research and experimentation.

"Sister Xu, come and see, how about this material?"

When Xu Ying heard Lin Yu's words, she hurriedly walked over, only to see Lin Yu pick up a white crystal with tweezers, "This is ......" Xu Ying's pupils dilated.

"Gallium oxide?" Xu Ying recognized it, but this gallium oxide was originally in the form of crumbs or powders, and the largest single crystal was no more than two inches, but this was the first time I had seen this kind of four-inch long crystal.

"That's right, Sister Xu, I used a guide mode method, which can smoothly prepare a four-inch gallium oxide single crystal." Lin Yu also couldn't hide his excitement, and the method he used in the system research institute could be successfully replicated in reality.

"How did you do that?"

"The raw material used for crystal growth is gallium oxide powder, which is heated by medium frequency induction, and the iridium heating element, iridium mold, and zirconia is placed around the iridium crucible as a thermal insulation material."

Lin Yu pointed to his experimental equipment with some excitement.

"Using 010 direction seed crystal, the maximum main surface of the crystal is 001 surface, and the mold width is 105mm. After the gallium oxide powder is heated and melted, the melt will rise to the surface of the mold through capillary action, and it will be continuously lifted and grown through seed crystal induction. ”

Lin Yu took out an iron ruler and began to measure, and after recording the length, width and height, he carefully took the crystal to the front of the instrument.

"Let's measure her properties and performance later."

"Yu God deserves to be Yu God, this is a small breakthrough." Xia Yunyun whispered to Luo Bing and Shang Hao.

Lin Yu carefully sent the crystal to the scanning electron microscope room next door, observed the intensity of the electron beam, and quickly recorded its intensity and landing voltage.

After that, the ultraviolet spectrometer, atomic force microscope, high-resolution X-ray diffraction equipment, Leg diffractometer and other instruments are tested.

Finally, wet chemical etching technology was used to characterize the crystal quality.

"Sister Xu, yes, the four-inch gallium oxide single crystal prepared by this method has no twin crystals, there are no small-angle grain boundary defects in the crystal, and the crystallization quality is good."

"Okay, Xiao Yuzi, you are really my lucky star!" Xu Ying patted Lin Yu's shoulder with relief.

"A paper will be published tomorrow, and it should be on a core journal, and you will surprise me when you come back."

"But Sister Xu, this is the fourth generation of semiconductor materials......"

"Isn't this all the same!"

Although Lin Yu was going to put everyone's names together in the paper, what was going on with this inexplicable feeling?

"Sister Xu, you have changed, you have become thick-skinned." Lin Yu figured it out, because of Xu Ying, she began to be cheeky, and then looked at Xu Ying with resentment.

"Nonsense! I don't have a face anymore, can I have you a shame? Xu Ying snorted arrogantly.

Luo Bing chuckled, sure enough, only Sister Ying could restrain Brother Yu.

And Xia Yunyun and Shang Hao were excited to eat melons, and by the way, "Yu God is awesome!" ”

Because Lin Yu had a small result on the first day, Xu Ying was determined to pay out of her own pocket to celebrate the group.

Of course, another reason is that this time I was finally able to relax a little, I used to be tired of taking students to work on projects, but now that Lin Yu is here, I can relax.

After returning home, Lin Yu devoted himself to the writing of the paper, uploading the photos taken in the laboratory into the newly bought notebook, and then opening the document and starting the great business of paper editing.

It took a few hours to get the paper roughly done, and the rest was to repair it carefully, and do it again tomorrow, Lin Yu felt a little tired.

"System, view personal information."

I almost forgot about the system.,Recently, the sense of existence of this system is so low.,Except for the system research institute.。

【Lin Yu】

[Lifespan: 363 days]

[Ability: Increase the acquisition of mechanical engineering knowledge by 20%, increase the acquisition of philosophical knowledge by 20%]

[Mission: Research and development of fourth-generation semiconductor materials]

[Mission Reward: Data of the New Generation Space Urine Collection Device]

【Reward: Random Ability Boost】

[Hidden Mission: Develop Androids]

【Reward: Random Items】

【Reward: Random Ability Boost】

"System, to be honest, I feel that your task this time is rather pitiful, how many different materials need to be developed to develop the fourth generation of semiconductor materials to be completed?"

Lin Yu's soul asked.

The system hurriedly came out to explain the patching, "The host question is valid, change the task description." ”

"The description has changed."

[Mission: Research and development of fourth-generation semiconductor materials (1/3)]

[Mission Reward: Data of the New Generation Space Urine Collection Device]

【Reward: Random Ability Boost】

"Changed to three materials?" Lin Yu touched his chin, "It's okay." ”