From noon to evening, from sunset to bright lights, Xu Chuan stretched himself in the dormitory.
After eight or nine hours of busy work, he finally finished sorting out the experimental data in his hands.
Glancing at the programming modeling software such as MATLAB, Lingo, Cplex, and python that was being downloaded on the computer, Xu Chuan saw the traffic of 68.3Kb/s, 72.1Kb/s and less than 10% of the progress.
I just feel my balls hurt.
Can this campus network be even more broken?
It has been almost ten hours, and the progress has only come so far.
He looked at the time in the lower right corner and saw that it was around nine o'clock in the evening. He touched his stomach and got up to eat.
It's another day with an irregular schedule. If this continues, sooner or later he will get stomach trouble and end up eating soft food.
Shaking his head, Xu Chuan went straight to the Second Canteen of Nanjing University. At this time, the only second canteen was still open.
After ordering two dishes at random, Xu Chuan sat in the corner and started eating. Suddenly, a figure came into his eyes.
"Hi, senior."
The part-time girl I met at dinner last time actually came out of the back door of the cafeteria, holding a rag and a bucket of water.
Xu Chuan didn't pay much attention at first, but after taking two bites of food, he felt like something was wrong.
On the other side, Fan Pengyue from Master Xiong who came over to listen quickly retorted: "How is this possible? The concentration of the reducing agent cannot have no effect on the synthesis and collapse curling of tungsten diselenide nanosheets."
"No, there is no problem with Xu Chuan's calculation data. The problem may really occur in the hydrogen reducing agent."
"That may be a problem with your calculations."
In his previous life, his family was far less wealthy than in this life. Both his parents were farmers, and they had to provide for a son and a daughter to go to school. Moreover, they both attended prestigious schools in the provincial capital. His family's financial situation was not until he entered graduate school and made his own achievements.
Things got better after a big bonus.
"After dissolving sodium borohydride in an organic solvent, selenium powder and sodium tungstate are added successively to prepare a mixed solution, and then the hydrogen reducing agent can effectively increase the production rate of tungsten diselenide."
After saying hello in a low voice, her face turned a little red. She was a little embarrassed when she was bumped into by a familiar person that she was working part-time here.
On the side, Chen Zhengping suddenly interrupted Fan Pengyue and continued: "Maybe the concentration of the hydrogen reducing agent is too high? It is saturated in the hot solvent, which will also cause it to be ineffective no matter how we change the concentration of the hydrogen reducing agent.
Increase the production rate of tungsten diselenide.”
Fan Pengyue frowned and said: "But the concentration of the hydrogen reducing agent was obtained through previous experiments. There cannot be a problem. If there is a problem, we should have discovered it in the previous experiments."
"If there is no effect or even a very small effect, what else is it called a reducing agent? There is no need for us to add a hydrogen reducing agent."
"Furthermore, judging from previous hydrogen reduction papers and experimental data on tungsten diselenide from other laboratories, including the United States, Germany, and other countries, the hydrogen reducing agent is the most suitable for the generation of tungsten diselenide."
Seeing that it was a familiar person, Liu Jiaxin felt slightly relieved.
Xu Chuan didn't care. After he finished eating, the second cafeteria was almost closed.
Caught off guard, Xu Chuan almost revealed his previous experimental theory, but luckily he held it back midway.
After calming down his thoughts, he said, "I don't know about this. After all, I'm not familiar with the material."
"But the result I calculated is this. Maybe it goes against common sense, but mathematics doesn't lie."
He didn't think too much about it, it was just a part-time job, and it wasn't like he had never done it before.
"Xu Chuan, what do you think?"
"Yes, it's you."
Xu Chuan shrugged and didn't mind Fan Pengyue's rebuttal. He knew that Master Xiong had always had this straightforward character.
"Do you have to work part-time here every night? Senior sister." Xu Chuan asked casually after taking a bite of the food.
The first time was her teacher Professor Zhou Hai.
"But I think it might be possible to establish a mathematical model to simulate the effects of temperature, pressure, reducing agent concentration, time and other parameters on the collapse and curling of tungsten diselenide nanosheets?"
"And this time we used brand-new means and methods to synthesize tungsten diselenide nanosheets through the hot solvent method. Previous experience and data may not be applicable, so problems are possible."
The next day, Xu Chuan took the data calculated yesterday afternoon to find his mentor Chen Zhengping who was in the materials research and development building.
Xu Chuan said hello.
Xu Chuan nodded and said: "From the data calculation point of view, it does not have much impact. I calculated three sample data yesterday. The synthesis and collapse curling deviation of tungsten diselenide nanosheets was 0.03%.
When it reaches about 0.05 percent, this deviation can be said to be very small."
He raised his head suddenly and glanced at the girl who was wiping the dining table, feeling a sense of familiarity welling up in his heart.
Carefully raising her head, she looked for the source of the sound, and a face with a bright smile came into her eyes.
"Are you saying that the concentration of the hydrogen reducing agent has no effect on the synthesis and collapse curling of tungsten diselenide nanosheets?"
Hearing this, Chen Zhengping smiled and said: "Perhaps it is these things and our experience that have harmed us. We have only experimentally confirmed the effect of hydrogen reducing agent on selenium powder and sodium tungstate before, and have not completely examined the entire
Experimental process for new testing.”
"Isn't this Professor Zhou Hai's student, the senior sister who gave him medicine?"
The conversation changed and Chen Zhengping suddenly asked Xu Chuan.
In order to supplement his living expenses, he worked part-time during college, distributed leaflets, and tutored.
Chen Zhengping asked again in surprise, took the manuscript paper hesitantly, and started to read it.
Across the way, Liu Jiaxin, who was wiping the table, heard the sound and couldn't help but tremble. She has been working part-time here for a year, and this is the second time someone has greeted her.
Xu Chuan was stunned for a moment to reflect. No wonder his senior sister always felt familiar when she delivered medicine to him. It turned out that she was working part-time here.
Liu Jiaxin nodded and continued to wipe the dining table and arrange the tables and chairs.
"Do you know how to model? Have you learned it?"
Hearing this, Chen Zhengping looked at Xu Chuan in surprise.
Xu Chuan was about to nod, but then he thought of something, shook his head and said, "I'm not very familiar with this area, but I can recommend someone."