Shulou(Shulou.com)11/24 Report--

Thank CTOnews.com netizens Rimi Ishihara for the delivery of the clue to happiness! CTOnews.com, July 30, according to the Financial Associated Press, Hong Zhiyong, director of the Shanghai Superconducting Materials and Systems Engineering Research Center and an expert in superconducting application research, said at an internal telephone conference held by Soochow Electronics this morning that the superconductor recently announced by the South Korean research team is not room temperature superconducting.

Hong Zhiyong said that according to the current situation, the testing methods and methods reported by his team are not very orthodox superconducting material verification experiments. Previously, the experimental conditions announced by Diaz's team were limited to 10,000 atmospheric pressure, because the presentation of the data was too "perfect" and the authenticity of the data was questioned. But this time the South Korean team is the other way around. they report that the synthesis method of the material is very clear and simple, but the test method and the presentation form of the data as well as the rigor of the data are very rough. What's more, it is far from some internationally recognized testing methods to verify superconducting properties. From the present data, they are only synthesized and mixed, and among the lead apatite compounds which should not have obvious electromagnetic properties, they are found to have certain electrical conductivity and weak diamagnetism at room temperature. however, this conductivity is also weaker than copper, silver and other metal conductors, which is an interesting physical phenomenon, but the experimental results are still far from proving that the sample is a superconductor or contains superconducting components.

According to thepaper.cn, Wen Haihu, a professor at the School of Physics at Nanjing University, said in an interview on July 28, "it's really lively, but it's not surprising, because this matter is very important." Most people don't make superconductors. "" We carefully analyzed their data and found that it is not a superconducting phenomenon from three aspects-resistance, magnetization and so-called magnetic levitation. "" Our judgment (what it calls superconductivity) is very likely to be an illusion. "

As for the repeated experiment, Wen Haihu said, "in fact, none of us wanted to do it, because we judged that it was not like superconductivity, and later we sent a classmate to do it." many international groups are repeating. in our experience, (the data released in the paper so far) is not enough to prove that it is superconducting. "

Is there really a material that can enter the superconducting state at room temperature and pressure? Wen Haihu said that existence is not ruled out. "but this is a very ambitious goal, as to whether we can see it in our lifetime, I don't know. So now that South Korea's result comes out, everyone is very excited. if it is true, everyone is very happy. but the current evidence is not enough to prove that it is a superconducting material."

CTOnews.com previously reported that a team of South Korean scientists said they had discovered the world's first room temperature superconductor, the crystal structure of modified lead apatite (hereinafter referred to as LK-99, a copper-doped lead apatite). The team excitedly pointed out, "all the evidence can prove that LK-99 is the world's first room temperature and atmospheric pressure superconductor. The birth of LK-99 means a major breakthrough in the field of room temperature superconductivity and opens a new historical era."

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