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
Liquid metal solution slowly, producing gallates like [Ga(OH)], which makes the surface of gallium negatively charged and cations accumulated nearby, and thus the electrically charged interface forms into a uniform diffuse electrical double layer (EDL) . The electrons flowing internally from Al to the liquid metal preferentially deoxidate the oxidized gallium near the Al, which alters the distribution of the charges across the EDL, leading to the generation of a potential gradient along the liquid metal surface. According to Lippmann's equation, the alteration of the EDL induces an imbalance of the surface tension on the liquid metal. Following the Young-Laplace equation, the