After mastering the preparation methods of gaseous, liquid, and solid, how to prepare "metallic hydrogen" is a difficult problem that the scientific community is working hard to solve. Recently, the team of professor Zhao Mingwen of Shandong University proposed to use the high mechanical strength of carbon nanotubes to prepare and protect quasi-one-dimensional "metallic hydrogen" in carbon nanotubes at a relatively "lower" pressure, and developed a corresponding Theoretical model. This theoretical result has been published by the international academic journal "Nano Express".
Professor Zhao Mingwen's team from Shandong University said that due to the high mechanical strength of carbon nanotubes, ultra-high density quasi-one-dimensional "metallic hydrogen" can be formed in it. As a container, carbon nanotubes can not only protect the fleeting "metal hydrogen", but also effectively reduce the critical pressure for hydrogen metallization, and realize the metallization and superconducting properties of hydrogen under relatively "lower" pressure. .
According to the scientific research team, molecular dynamics simulations based on the first principles of quantum mechanics show that quasi-one-dimensional hydrogen bound to carbon nanotubes can change to a metallic state at 1.635 million times atmospheric pressure, and its critical temperature for superconductivity is also close to room temperature. Researchers have developed a corresponding theoretical model based on the Elijah Siberian superconductivity theory and successfully explained the superconducting properties of quasi-one-dimensional "metallic hydrogen".
The physicists Eugene Wigner and Hillard Huntington predicted in 1935 that "metallic hydrogen" exists under ultra-high pressure and strong conditions. Subsequently, the preparation of "metallic hydrogen" has become the goal of scientists in various countries to compete, even called the "holy grail" of high-pressure physics. According to the theoretical model, at 4.5 million times atmospheric pressure, "metallic hydrogen" has superconducting properties close to room temperature.
The extremely high pressure conditions make the experimental argument difficult. Therefore, how to obtain "metal hydrogen" under relatively "lower" pressure has become an important research direction at present. This time, the theoretical achievements made by Chinese scientists will provide a new solution for the experimental preparation and research of "metal hydrogen" at room temperature superconductors. (Xiao Haichuan)
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