Liquid metal Liquid metal Liquid metal consists of alloys with very low melting points which form a eutectic that is liquid at room temperature. The standard metal used to be mercury, but gallium-based alloys, which are lower both in their vapor pressure at room temperature and toxicity, are being used as a replacement in various applications. A few elemental metals are liquid at or near room temperature. The most well known is mercury(Hg), which is molten above −38.8 °C (234.3 K, −37.9 °F). Others include caesium(Cs), which has a melting point of 28.5 °C (83.3 °F), rubidium (Rb)(39 °C [102 °F]), francium
Room-temperature superconductor explained as room-temperature superconductivity within a phase formed on the surface of oxygen-doped type IIa diamonds in a vacuum. In 2003, a group of researchers published results on high-temperature superconductivity in palladium hydride (PdH: x>1) and an explanation in 2004. In 2007 the same group published results suggesting a superconducting transition temperature of 260 K. The superconducting critical temperature increases as the density of hydrogen inside the palladium lattice increases. This work has not been corroborated by other groups. In 2012, an "Advanced Materials" article claimed superconducting behavior of graphite powder after treatment with pure water at temperatures as high