From noon to evening, from the setting sun to the bright lights, in the dormitory, Xu Chuan stretched his waist.

After eight or nine hours of busyness, he finally finished sorting out the experimental data in his hand.

Glancing at the programming and modeling software such as MATLAB, Lingo, Cplex, and python that were being downloaded on the computer, Xu Chuan only felt pain when he saw the 68.3Kb/s and 72.1Kb/s traffic beating on it and the progress of less than tenths of the progress.

Can this campus network be broken a little more?

It's been almost ten hours, and the progress has only come so far.

Glancing at the time in the lower right corner, it was more than nine o'clock in the evening, and after touching his stomach, he got up and went to eat.

It's another day of irregular work and rest, and if it goes on like this, sooner or later he will get stomach problems, and then eat soft rice.

Shaking his head, Xu Chuan went straight to the second canteen of Nanda University, this point, and the second canteen that is still open.

Ordering two dishes casually, Xu Chuan sat in the corner and ate, and suddenly, a figure came into his eyes.

The part-time girl I met at the last meal really came out of the back door of the cafeteria, holding a rag in her hand and carrying a bucket of water

Xu Chuan didn't care at first, and after pulling two bites of food, he felt as if something was wrong.

Suddenly raised his head and stared at the girl who was wiping the dinner table, and a sense of familiarity came up from his heart.

"Isn't this Professor Zhou Hai's student, the senior sister who gave him medicine?"

Xu Chuan was stunned for a moment and reflected, no wonder he always felt a little familiar when the senior sister gave him medicine before, it turned out that she was working part-time here.

"Hi, Senpai."

Xu Chuan said hello.

On the other side, Liu Jiaxin, who was wiping the table, couldn't help but tremble when she heard the voice, she had been working part-time here for a year, and this was the second time someone had greeted her.

The first time was her teacher, Professor Zhou Hai.

Cautiously looking up at the source of the voice, a smiling face caught her eye.

Seeing that it was a familiar person, Liu Jiaxin's heart relaxed slightly.

"Yes, it's you."

After whispering hello, her face turned a little red, and she was a little embarrassed to be bumped into by someone familiar who was working part-time here.

"Do you have to work here part-time every night? Senpai. Xu Chuan asked casually after taking a bite of food.

He didn't think about it that much, it was just a part-time job, and he didn't do it before.

In his previous life, his family was far less wealthy than in this life, his parents were farmers, and he had to provide for a son and a daughter to go to school, and they both went to prestigious schools in the provincial capital, and his family did not improve until he entered graduate school and made his own achievements and received a large amount of bonuses.

In the past, in order to subsidize his life, he also worked part-time in college, distributing leaflets, tutoring and so on.

Liu Jiaxin nodded, and continued to bow her head to wipe the dining table and tidy up the tables and chairs.

Xu Chuan didn't care, and after he finished eating, the second canteen was almost closed.

......

The next day, Xu Chuan took the data calculated yesterday afternoon to find Chen Zhengping, a mentor who was working in the materials research and development building.

"Are you saying that the concentration of the hydrogen reducing agent has no effect on the synthesis and collapse of tungsten diselenide nanosheets?"

Chen Zhengping replied in surprise, took the manuscript paper in disbelief, and flipped through it.

Xu Chuan nodded, and said: "Judging from the data calculation, it really doesn't have much impact, I calculated three sample data yesterday, and the deviation of the synthesis and collapse of tungsten selenide nanosheets is about 0.03% to 0.05%, which can be said to be very small." ”

On the other side, Fan Pengyue, the master Xiong who came to listen, quickly retorted: "How is this possible, the concentration of the reducing agent cannot have no effect on the synthesis and collapse of tungsten diselenide nanosheets. ”

"After dissolving sodium borohydride in an organic solvent, selenium powder and sodium tungstate are added successively to prepare a mixed solution, and then the generation rate of tungsten dielenide can be effectively increased through a hydrogen reducing agent."

"If there is no impact or even very little impact, what is it called a reducing agent, and we don't need to add a hydrogen reducing agent."

Xu Chuan shrugged his shoulders, not minding Fan Pengyue's rebuttal, he knew that this master Xiong had always had such a straightforward character.

"But that's what I calculated, maybe it's against common sense, but math doesn't lie."

"That could be the problem with your calculations......"

"No, there is no problem with Xu Chuan's calculation data, the problem may really be with the hydrogen reducing agent."

On the side, Chen Zhengping suddenly interrupted Fan Pengyue's words, and continued: "Maybe the concentration of hydrogen reducing agent is too high?" And then it is saturated in the hot solvent, which will also lead to the fact that no matter how we change the concentration of the hydrogen reducing agent, we cannot effectively increase the generation rate of tungsten diselenide. ”

Fan Pengyue frowned and said: "But the concentration of the hydrogen reducing agent is what we obtained through experiments before, this can't be a problem, if there is a problem, we should have found it in the previous experiments." ”

"Moreover, in the past, other laboratories, including the hydrogen reduction papers of tungsten diselenide in various countries such as the United States and Germania, as well as experimental data, show that hydrogen reducing agent is the most suitable for tungsten diselenide generation."

Hearing this, Chen Zhengping smiled and said: "Maybe it is these things and our experience that hurt us, we only experimentally confirmed the effect of hydrogen reducing agent on selenium powder and sodium tungstate, and did not conduct a new test on the entire experimental process." ”

"And this time, we used new means and methods to synthesize tungsten diselenide nanosheets by hot solvent method, and the previous experience and data may not be applicable, so it is possible that there will be problems."

"Xu Chuan, what do you think?"

As soon as the conversation changed, Chen Zhengping suddenly asked Xu Chuan.

Caught off guard, Xu Chuan almost said his previous experimental theory, but fortunately he endured it halfway.

After slowing down his thoughts, he spoke: "I don't know about this, after all, I'm not familiar with the material. ”

"However, I think it is possible to build a mathematical model to simulate the effects of temperature, pressure, reducing agent concentration, time and other parameters on the collapse and rollup of tungsten diselenide nanosheets."

"Do you also know how to model? Learned? ”

Hearing this, Chen Zhengping looked at Xu Chuan with some surprise.

Xu Chuan was about to nod, but he thought of something again, shook his head and said, "I'm not very familiar with this piece, but I can recommend someone." ”

"Who?" Chen Zhengping asked.

.......