US researchers have recently developed a new type of electroplated metal composite material that can achieve superconductivity at relatively high temperatures. It has a variety of advantages and is expected to meet the requirements of next-generation computers for circuit board materials. Researchers at the University of Colorado Boulder and other institutions published a report in the new issue of the American Journal of Applied Physics. The report said that this new material uses electroplating to sandwich an ultra-thin layer of gold between two layers of gold. The thickness of each layer of metal is only one thousandth of the diameter of the hair.

Germanium is a rare metal, it is hard, has a high melting point, and is commonly used in the manufacture of jet engines. The team found that the composites made of yttrium and gold exhibit superconductivity at a temperature of 6 Kelvin (minus 267.15 degrees Celsius).

Superconductivity refers to the phenomenon where the resistance of a material completely disappears under certain conditions. If you can apply superconductivity to your computer, you can reduce the current consumption and create a higher-speed computer. However, known superconducting phenomena occur at extremely low temperatures, and the scientific community has been searching for materials that can achieve superconductivity at relatively high temperatures.

The researchers said that the new material has a relatively high temperature for superconducting, and it has advantages such as high melting point, good mechanical properties, and non-toxicity. In contrast, some mercury- or lead-based superconducting materials have poor mechanical properties and welding properties and are not conducive to use in computers. Therefore, this new material may be the best superconducting material that can be used so far to manufacture computer circuit boards.

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