In March of this year, there was a wave of room-temperature superconductors. At that time, physicist Langa Dias and his team at the University of Rochester announced at the meeting of the American Physical Society that they had created a superconductor that can operate at room temperature. A new material that realizes superconductivity.

This revolutionary topic has caused a sensation in the scientific and technological circles. Since the team’s paper has been questioned and withdrawn, the industry has disputes over its research and development and continues to wait and see.

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In July this year, a South Korean scientific team published a paper stating that they synthesized the world’s first room-temperature and atmospheric-pressure superconductor LK-99 (a lead apatite doped with copper), with a critical temperature of 127°C. If it is verified to be true, it will bring a breakthrough in the commercial use of superconductors. In the opinion of many people in the industry, the synthesis method of the Korean team is quite simple, and whether the same result can be reproduced needs to be verified, so it is also in controversy.

Hong Zhiyong, director of the Shanghai Superconducting Materials and Systems Engineering Research Center and an expert in superconducting application research, said in an internal conference call held by Soochow Electronics that the superconductor announced by the Korean research team recently has a high probability of not being room temperature superconducting. In an interview with the media, he said that the synthesis method of the material reported by the South Korean team is very clear and simple, but the test method and data presentation form and the rigor of the data are very rough, which is more in line with some internationally recognized methods for verifying superconducting properties. Testing methods vary widely.

Judging from the data presented so far, they found that they have a certain degree of conductivity and weak diamagnetism at room temperature in the lead apatite compound that should not have obvious electromagnetic properties through synthesis and doping, but this The electrical conductivity is weaker than metal conductors such as copper and silver. This is an interesting physical phenomenon, but the experimental results are far from proving that the sample is a superconductor or that the sample contains superconducting components.

A few days ago, Hyun-Tak Kim, a research professor at the Department of Physics of the College of William and Mary in the United States, a member of the South Korean research team, said in a reply to the domestic media that the LK-99 room temperature superconducting material manufactured by his team may be replicated within a month.

Immediately afterwards, the research institute of the Lawrence Berkeley National Laboratory (LBNL), the top laboratory in the United States, published a paper stating that it used density functional theory (DFT) and GGA+U methods to calculate the so-called “room temperature Atmospheric pressure superconducting materials” provides a theoretical basis. At the same time, on August 1, the research team of Huazhong University of Science and Technology released a video, claiming to reproduce Korean room temperature superconducting materials and prove diamagnetism. Professor Chang Haixin confirmed that the video was released by the research team led by him.

However, the Lawrence Berkeley National Laboratory did not directly prove the success of the Korean research, but only theoretically explained that the Korean team’s method is not impossible, and the video of Huazhong University of Science and Technology proved that some of the characteristics of the LK-99 material have not yet been fully replicated. The results of the Korean team still need to prove its zero-resistance characteristics.

Due to the simplicity of the South Korean team’s method, experts from various countries have begun to carry out repeated experiments, and some samples have successfully proved a characteristic, and some samples do not show the phenomenon of superconducting magnetic levitation. Of course, due to differences in equipment conditions, materials, etc., the experimental results are different. Whether there is a real breakthrough in room temperature superconductivity still needs more verification.

Table of Contents

What is the Superconductor?

Superconductor, also known as superconducting material, refers to a conductor with zero resistance at a certain temperature. In experiments, if the measured value of the conductor resistance is lower than 10-25Ω, the resistance can be considered as zero.

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Superconductors not only have the property of zero resistance, another important feature is complete diamagnetism.

Humans first discovered superconductors in 1911. In this year, Dutch scientist Heike Kamerlingh Onnes and others discovered that at extremely low temperatures, mercury’s resistance disappears and it becomes superconducting. Since then, the research on superconductors has become more and more in-depth. On the one hand, a variety of superconducting materials with practical potential have been discovered. On the other hand, the research on the superconducting mechanism has also made some progress.

Superconductors have carried out a series of experimental applications, and have carried out certain military and commercial applications, and can be used as defect materials for photonic crystals in the field of communication.

What kind of Breakthroughs can Superconductors bring to the Chip Industry?

The Netherlands Research Council (NWO) estimates that the efficiency advantage of superconductivity alone could reduce global Western energy consumption by 10% compared to conventional semiconductors. At the same time, chipmakers are jumping at opportunities to reduce heat and wasted power in their designs, as they always do when economically feasible.

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But another element of the research is the type of performance gains that superconductors could unlock compared to their traditional semiconductor counterparts. Researcher Mahzar Ali said the new scientific breakthrough could pave the way for a transformative development in chip manufacturing. Technologies that could only be achieved with semiconductors can now be fabricated with superconductors – offering up to 300 to 400 times the operating frequency of classical materials. Ultimately, he says, this possibility will come true for a variety of social and technological applications.

Summary and Outlook

Although the specific application of room temperature superconductor materials still needs to be considered in many ways, the chip industry will continue to pay attention to the future development. The chip-containing products produced by Newbega have always been at the forefront of the times. If you have an idea of buying a chip card, please feel free to contact us.

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