Chapter 470 A Great Achievement for South Korea
In the office, Xu Chuan got the complete report of this electrochemical synthesis of graphene.
From the complete synthesis process to the various test reports and index parameters of the synthesized graphene, everything is complete.
After a simple review of the synthesis process, his eyes fell on the test report and index parameters of graphene.
[Graphene powder A (colloidally dispersible), number of layers: 1-5 layers (controllable), average thickness: 2nm, graphene sheet size: 5-50μm (controllable), purity (carbon content): about 97wt%]
[Graphene powder B (lower cost), number of layers: 2-10 layers (controllable), graphene sheet size: 20-200μm (controllable), specific surface area: about 50 m2/g, purity (carbon content): about 98wt%]
[Graphite film A]
The data and index parameters obtained from the test passed through Xu Chuan's eyes.
Graphene products are generally divided into two forms: graphene powder and graphene film.
Graphene powder is currently mainly used in new energy, anti-corrosion coatings, composite materials, biosensors and other fields, with a wide range of applications.
Graphene film is mainly used in flexible display, sensors, electronic devices and other fields, with a relatively small range of applications.
But his main attention is on graphene film.
Because compared with graphene powder, graphene film has a broader prospect.
Whether it is flexible display, sensor, or graphene electronic device, it is a more sophisticated and more expensive product.
Moreover, it is particularly difficult to produce large-scale high-quality graphene, and the market that can be created is also larger.
[Graphite film A: Density: 0.3–2.2 g/ml (adjustable), transmittance: 99.98-99.7% (number of layers): Thickness: 1– 50μm (adjustable), thermal conductivity: 4837.21 W/mK, electrical conductivity: 10^6, tensile strength: 1 - 50 MPa, internal carrier mobility: 2×10^5cm^2/Vs]
[Graphite film B:.]
Six groups of control test experiments, from the data, this graphene film prepared by electrochemical method is quite excellent in various parameters and indicators.
Whether it is transmittance, thermal conductivity, or electrical conductivity and tensile strength, it can be said to be top-level in graphene film.
This level of graphene film has a relatively wide range of applications.
For example, heat dissipation in mobile phones or computers.
Nowadays, after the great leap forward in mobile phone performance, performance is actually not lacking, but mobile phones need to generate heat to release performance, and the stronger the performance of SoC, the higher the heat generation.
However, the internal design of mobile phones is very expensive. "How to conduct heat" during the release of mobile phone performance is the key problem that smartphones need to solve now.
With a thermal conductivity of up to 4837.21 W/mK and nearly 5,000, its thermal conductivity exceeds all thermal conductive materials on the market.
For general mobile phones or computers, the heat dissipation materials used are thermal grease or thermal conductive silicone sheets for heat dissipation.
The thermal conductivity of these two materials is only about 10W/mK, and even the high thermal conductivity silicone is only about 15-45W/mK.
For better mobile phones, more advanced and expensive phase change thermal conductive sheets, thermal conductive graphite sheets, VC heat spreaders, and thermal conductive silicone gels are used to form a thermal conductive solution.
But even the graphite sheet with the best thermal conductivity has a thermal conductivity of only 1500-2000w/m.k.
This number is already exaggerated enough in conventional heat dissipation materials, but compared with graphene with a thermal conductivity of nearly 5,000, the performance is very poor.
It has to be said that the results of the Chuanhai Materials Research Laboratory this time, even without him, are enough to make this institute one of the world's top materials research institutes.
After all, this is a technology that can industrially mass-produce high-quality graphene materials.
Xu Chuan naturally attended the celebration party in the evening.
After all, for the Chuanhai Materials Research Institute, the ownership of the results developed by the researchers under its name belongs to the institute.
The graphene technology developed by Yan Liu and the researchers this time, whether patents or other things, basically belongs to the institute and the laboratory.
These are industry practices in the materials industry, and they will also be stipulated in the contract, and there is nothing to dispute.
As for the researchers who have made achievements, they generally receive project bonuses and one or more papers written during the research process.
Of course, in many cases, after the researchers have made achievements, considering the confidentiality of the project, patents, and other related projects, the papers may be held in their hands and postponed for a period of time before being published.
Or sometimes it may even be impossible to make it public, or even impossible to apply for a patent.
In this case, the institute or laboratory will naturally compensate the corresponding researchers for other things.
Just like this time, after considering the special nature of high-quality graphene, Xu Chuan talked to Yan Liu and decided that the paper might have to be postponed or not published at all.
But the compensation is generous.
Simply put, in addition to a promotion, salary increase and an extra bonus, Yan Liu will get 2% of the net profit after the mass production of graphene.
Although the number of 2% is small, the market for high-quality graphene is quite vast, and it is almost several billion dollars every year.
Although it is impossible for the Chuanhai Materials Research Institute to monopolize all the markets, with the outflow of high-quality graphene, this market will gradually expand over the years.
In the future, the market for high-quality graphene may not be several billion, but may be tens of billions or even hundreds of billions.
Even if the Chuanhai Materials Research Institute can only occupy half or even one-third of the market, the dividends that Yan Liu can get are calculated in tens of millions or hundreds of millions.
In fact, for most research institutes, under normal circumstances, it is difficult for ordinary scientific researchers to get a share even if they accidentally develop a material or patent that can bring high profits to the institute.
After all, you use the institute's funds and equipment to do research, and the contract also stipulates the ownership of these things.
However, for Xu Chuan, he has always been generous in this regard.
And it is definitely worth it to use 2% of the profit to bind Yan Liu to the Chuanhai Materials Research Institute to prevent other research institutes from poaching him and leaking the synthesis process and method of graphene.
Of course, this also has the effect of buying a horse bone with a thousand gold.
When other researchers know about this, they will definitely work hard to do research.
And for every achievement, even if a part of the profit is distributed to researchers, the institute will still make a lot of money.
This is totally worth it.
And Yan Liu naturally accepted this compensation with joy.
Although the paper cannot be published, he has received promotion, salary increase, bonus and even dividends that he never thought of.
If he was not so shameless, he really wanted to shout: ‘Chuan Shen is awesome! Chuan Shen is generous! ’
After all, researchers work hard to do experiments and publish papers, isn’t it just to improve their reputation, get promotions and salary increases to earn more money?
Although there are ideals, before pursuing ideals, you have to make your own bread, right?
This time, he got it all in one step, and there were unexpected dividends. If he is still not satisfied, it would be unreasonable.
After simply dealing with the work brought about by the mass production of graphene, Xu Chuan found the master Xiong Fanpengyue and handed him a USB flash drive.
"This is a research result of a strongly correlated electron system, mainly for the strong anti-magnetic mechanism of the KL-66 material studied in South Korea before."
"Find a few modelers who are definitely 'clean', use it to build a targeted mathematical model, and apply it to the high-temperature copper-carbon-silver composite superconducting material system."
"This work is very important, and it must be kept confidential."
Xu Chuan handed over the USB flash drive in his hand, which contained his research results some time ago.
Although the problem of the strongly correlated electron system is still stuck in the last step, the research on the strong anti-magnetic mechanism of the KL-66 material has been completed.
The remaining work is to use this research to build a mathematical model, and then introduce high-temperature copper-carbon-silver composite superconducting materials to see if the critical magnetic field of the superconducting material can be improved on the original basis.
In the KL-66 material, its strong anti-magnetic mechanism comes from the copper replacing the ions in the lead phosphate insulation network, and the stress is transferred to the Pb of the cylinder at the same time, causing the deformation of the cylinder interface, thereby generating a magnetic well.
To explain it mathematically, the two branches of the Fermi arc state electrons connecting the c-axis break the inversion symmetry, which in turn causes the Dirac cone to split into two Weyl nodes with opposite chirality, resulting in a non-trivial quantum phenomenon.
If you can't understand this, in the simplest terms, it is to put a massive star into the solar system, replacing planets such as Jupiter or Saturn.
And because of the strong gravity of the star itself, the new star will stretch space-time, form another gravitational field, and change the orbit of other celestial bodies in the solar system.
The magnetic well in the KL-66 material has a similar effect. It forms its own unique additional magnetic moment. The direction of the magnetic moment is opposite to the direction of the external magnetic field, forming the Larmor precession phenomenon and having strong anti-magnetism.
This phenomenon is theoretically applicable to many materials, especially semi-metallic and semi-organic combined materials.
It's just that how to control the atomic-level unit to form a unique additional magnetic moment is a difficult problem.
This requires continuous experimental verification in the future.
But at least, before he conducts the experiment himself, the relevant mathematical calculation model must be made first.
I have to say that if they can make another breakthrough in the critical magnetic field of superconducting materials this time, and can make miniaturized controlled nuclear fusion and aerospace engines, South Korea will really deserve a great credit.
If it weren't for the KL-66 material they made, it would be as difficult as climbing to the sky to improve the critical magnetic field of superconducting materials.
Although the purpose of making this material may not exist, the value in it is real.
Even its own scientists have not discovered it.
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