Material manufacturing requires professionals.
The manufacturing of granular materials involves metal precision processing technology, so Wang Hao found the top precision machining expert in the country, Academician Yang Yunhe.
Yang Yunhe is an academician of the Academy of Engineering.
He graduated from Harvard University with a major in materials engineering. He has dual doctorates in mechanical and materials engineering. He has won the Alfred Sloan Award, the Science Foundation Waterman Award and other honors, and was appointed as a tenured professor at the University of California, Berkeley.
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Later, Yang Yunhe decided to return to China for development and served as the dean of the School of Physical Science and Technology of Donggang University. During his term, he was elected as an academician of the Academy of Engineering.
After leaving Donggang University, Yang Yunhe joined the country's top precision manufacturing company, Donggong Precision, focusing on research on improving metal-related manufacturing technologies.
Wang Hao's itinerary is still very secretive.
He did not go to the R&D department of Donggong Precision Company, but went to an academic conference venue related to metal manufacturing. In a small room on the side, he waited for Yang Yunhe, who was attending the conference.
Yang Yunhe was very enthusiastic when he saw Wang Hao. He came over to shake hands and said, "Teacher Xu called me. I never expected that, Academician Wang, you would come here in person."
"You're welcome."
Wang Hao exchanged pleasantries and said, "I have no choice but to do research. I am too anxious about research. In the field of domestic precision engineering, Donggong Precision is the most cutting-edge. Academician Yang, you are the top expert."
Yang Yunhe stopped being modest and asked directly, "What are the specific needs?"
Wang Hao took out the drawing and pointed to the grainy image drawn on it, "I would like to ask, with TOG Precision's technical capabilities, how small can a metal material of this shape be made?"
Yang Yunhe took the drawing and looked at it, frowned and asked, "Are the accuracy requirements high?"
Wang Hao thought for a while and said, "It does not require high precision, but the overall deviation cannot be too large. We want to create such metal particles."
"...just a millimeter."
Yang Yunhe hesitated for a moment and continued, "The difficulty in making this shape lies in the semicircular depressions on the lower three sides and the semicircular bulges on the upper side."
"First of all, we need to carry out model design, but because it is too small, errors will definitely occur."
"If it's any lower, we need to research a solution, which may not just be purely physical cutting and manufacturing of metals."
He paused for a moment, then thought about it and continued, "Academician Wang, you should know about chips, right? I'm not talking about making nanometer-sized particles, but because of the complex shape, as long as you make particles smaller than millimeter-sized particles, you can
A similar technology is needed."
"This cannot be done directly. A systematic system needs to be improved."
Yang Yunhe continued to explain everything.
Wang Hao thought about it and said, "In other words, if you are making particles larger than a millimeter, you can design them and produce them directly, but if they are smaller, it will be difficult, right?"
Yang Yunhe nodded, "No matter how small it is, it can't be solved by simply cutting and plasticizing it."
"Of course, if you do specialized research regardless of cost, you can also find ways to produce finer particles, but it will only require a lot of investment and time."
Wang Hao had something in his mind.
…
The answer given by Yang Yunhe was better than expected.
Wang Hao thought that millimeter-sized particles were difficult to produce because the shape of the particles on the drawing was too complex.
For now, millimeters are enough for the time being.
He chatted with Yang Yunhe again, and knowing that the other party was still attending the meeting, he did not continue to disturb him and returned to Xihai University.
Originally, I wanted to go directly to the Annihilation Force Field Experimental Base, but after thinking about it, I simply went to the Nanomaterials Laboratory and found Xia Guobin who was busy.
Xia Guobin is still doing research on the microproperties of superconducting alloys.
When Wang Hao arrived at the laboratory operation room, Xia Guobin was busy in a white coat. He turned his head and saw Wang Hao, said a few words to the others and came out.
"Academician Wang, you are here!"
Xia Guobin greeted him and immediately said, "Our research has not found anything recently."
There was a hint of sadness in his voice.
When Wang Hao came to talk about research issues before, he thought the asking price of five million was too high, so he automatically lowered it to four million.
Later I found out that the other party had prepared 20 million.
Twenty million turned into four million, and it felt like a sharp stab in the heart.
Wang Hao didn't care about Xia Guobin's tone, but said, "It's not about the project. I came here to ask a question."
"What?"
Xia Guobin's expectation suddenly turned into confusion. He couldn't think of any questions that Wang Hao would ask him.
Wang Hao took out the drawings of the particle plan, laid them out on the table and said, "Professor Xia, look at this three-dimensional figure. It is a trihedron. One of the upper faces is semicircularly protruding, and the lower three small faces are semicircularly concave."
"Uh-huh."
Xia Guobin nodded while watching.
"You are an expert in nanomaterials. Is there any way to create micron-sized metal particles with shapes like this?"
"——?"
Xia Guobin was stunned with his mouth half open.
He reacted for a long time before he seemed to come to his senses and asked with an exaggerated expression, "Micrometer level? Such a complex structure?"
"yes?"
Xia Guobin pursed his lips hard.
He was silent for more than ten seconds and then said, "Academician Wang, when you came to Xihai University, do you remember what research we were doing?"
"...Microsphere separation?"
"right!"
Xia Guobin nodded vigorously, "At that time, we cooperated with the Micron Group to study the separation of micron-level conductive microspheres. To simply understand, the manufacturing of those conductive microspheres involves heating, stirring, and separation..."
"Micron-level metal balls can only be made through such a simple method. The pattern you came up with is so complicated that it needs to be finely cut at the centimeter level..."
Needless to say further.
Xia Guobin had a look of despair on his face, and his expression seemed to say, 'Are you kidding me?'
Wang Hao also became silent.
He pursed his lips and frowned, thinking. After more than a minute, he suddenly said, "Microsphere manufacturing...come and talk to me in detail."
This chapter is not over, please click on the next page to continue reading! "You ask this?"
"yes."
"Academician Wang, are you kidding me?"
"certainly!"
"……All right."
…
The manufacturing process of conductive microspheres, just like Xia Guobin’s description, can be simply understood as ‘heating, stirring, and separation’.
When a certain material is placed in molten metal liquid and dispersed by physical means, it will naturally separate into fine balls.
The surface of the ball is contaminated with metal, which makes it conductive.
This process takes advantage of material properties.
On the way to the annihilation force field experimental base, Wang Hao kept thinking about the process mentioned by Xia Guobin. He felt that there was something in common between the manufacturing of microspheres and granular materials.
Microsphere manufacturing takes advantage of material physical properties;
During the conduction process, a semi-topological structure is formed inside the material, which is also a microscopic physical property.
If a strong voltage environment can be created and molten metal material is placed in it, as long as a current of sufficient intensity passes through, semi-topological structures will be formed inside the molten metal material.
In this state, can metal particles similar to the semi-topological structure be separated by some physical means?
"The granular design is designed according to the material layout that stimulates anti-gravity, but in essence, it is infinitely close to the semi-topological structure inside the conductor."
"The semi-topological structure is a physical property that is related to the ion lattice, but it is not exactly the same. It can be considered as a bond structure that can be squeezed..."
To be continued...