Using the quick search there are shown up to three reports about high-temperature superconducting materials:
While the phenomenon of superconductivity — in which some materials lose all resistance to electric currents at extremely low temperatures — has been known for more than a century, the temperature at ...
Materialwissenschaften |All known natural materials have a positive refractive index so that light that crosses from one medium to another gets slightly bent in the direction of propagation. In some artificial ‘metamaterial’...
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