Great Country Academician

Finding out a small problem does not mean that the data analysis of tungsten diselenide is complete.

The purpose of Xu Chuan's coming to help this time is to analyze and find out where the complete crystallization of tungsten diselenide is hindered during the process of laying the tungsten diselenide, rather than the problem of material loss at the beginning.

Of course, the latter is also very important, after all, a small peak directly affects the yield of ten percent.

So in the next time, his mentor and brothers are busy.

If you want to go down the synthetic path of the solvothermal method, then what is the reason for this small peak must be found.

As for Xu Chuan, after understanding the significance of these experimental data, he returned to his dormitory with some experimental data and information.

He is still more used to solving problems in the dormitory or in the library. The former is quiet and undisturbed and easy to think, while the latter swims in the ocean of knowledge. When encountering any problems, he can go to the bookshelf to find information.

In the dormitory, Xu Chuan spread the materials he brought back on the desk and began to read them carefully.

Although he already knew the reason for the failure of tungsten diselenide tiling, it would take some time to describe it in mathematical language.

"From the experimental data, the problem of the reducing agent interfering with the tungsten diselenide material only appeared in the solvothermal method, and other synthetic methods did not have similar problems."

"That is, the problem is either with the reducing agent, hydrogen, or with the hot solvent."

"However, let this point be put aside for the time being. This needs to be demonstrated experimentally, and the next step is the collapse or rolling of tungsten diselenide nanosheets due to van der Waals force in the later stage of tiling."

"This problem is the core, but it is not so easy to solve"

"In the case of eliminating the influence of the reducing agent and the substrate, from the experimental data, different concentrations of tungsten diselenide raw materials also have an impact on the tiling process."

Crouching in front of the desk, Xu Chuan stared at the data he brought back while writing and drawing on the manuscript paper.

"Assume that the concentration is R, the time is T, the temperature is C, the pressure is P, the current density is A, and the reducing agent concentration is H. The collapse phenomenon of tungsten diselenide nanosheets in a fixed TCPR increases with the increase of H. constant?"

"Huh? What the hell is going on?"

After calculating the data in his hand, Xu Chuan looked at the data on the manuscript paper in astonishment.

He even wondered if he had made a mistake.

How is it possible that the collapsed coil problem is not affected by reducing agent concentration?

Shaking his head, Xu Chuan took the data from another experiment and recalculated it again, but the result was still not too different.

I calculated it twice more, and the result is still the same. Although the results are slightly different each time, overall, from the data point of view, the collapsed coil is indeed not affected by the H concentration.

This situation made him frown. He has been studying materials for so many years, and this is the first time he has encountered such a strange situation.

"This is really interesting."

Xu Chuan put down the pen in his hand, leaned back, and fell on the back of the chair, staring at the gray ceiling and meditating.

For the R\u0026D and preparation of a material, slight changes in various details such as temperature, pressure, raw material concentration, time, and reducing agent concentration will cause changes in the finished product.

But now the tutor's experimental data tells him that the concentration of the reducing agent has almost no effect on the production of the finished product.

That is to say, the reducing agent hydrogen used by the tutor hardly plays any role in the formation of tungsten diselenide nanosheets. Is this possible?

This was more absurd than being told that God was a dog.

But the data he calculated told him that this was the case.

There is nothing more absurd than this.

"No, no, there is another possibility, that is, the concentration of the hydrogen reducing agent at the lowest value is completely saturated."

"It's like adding salt to a brine, no matter how much you add, it won't melt."

"If that's the case, it does have a small impact."

Staring at the ceiling, Xu Chuan skillfully thought about the various situations encountered in the previous study of materials in his mind, and applied them to this experimental data.

"Maybe I should build a mathematical model? To determine the influence of various parameters such as the concentration of hydrogen reducing agent on the collapse and rolling of tungsten diselenide nanosheets?"

Suddenly, an idea popped up in Xu Chuan's mind.

It is not uncommon to apply mathematical models to material development experiments.

Research on practical problems by establishing appropriate mathematical models has become an important means of material science research and application, but not every laboratory has such capabilities.

After all, most material experiments involve quite a lot of variables, and the experimental process is also dynamic. To establish an accurate dynamic model, even university mathematics professors have to spend a lot of energy.

"Let's make one, just two days ago, I had a little communication with my senior sister, so I can practice it."

After thinking about it, Xu Chuan picked up the pen and paper again, and began to list the variables and conditions on the manuscript paper.

"Assuming that the collapse and roll rate of tungsten diselenide nanosheets is E, then E=∫pgh/Am·sh(2C°*pD)."

Mathematical modeling is indeed not his strong point. In the past, other mathematics professors from Princeton were invited to model for him when doing material experiments. However, he simply analyzed the experimental data of tungsten diselenide, and carried out data mining and utilization. He can still integrate mathematical tools.

After all, he doesn't need this model to be very accurate, he just needs to roughly determine whether the hydrogen reducing agent has enough influence in the experiment.

Time passed little by little, and soon, the sky outside became dark.

For the whole afternoon, Xu Chuan was sorting out the experimental data, and analyzed the useful data and listed them in the execl table to facilitate subsequent processing.

This is a rather tedious task that requires patience and care. Once a certain data is recorded incorrectly, the resulting model will be useless immediately.

Just like checking the financial accounts, it is inexplicable to find that the company account has an extra 100,000 yuan, and I don't know where it came from.

In the end, you can only painstakingly re-check the data.