Gallium Liquid Metal: The Devil's Elixir

Gallium is a metal that literally melts in your hand. It has low toxicity, near-zero vapor pressure, and viscosity similar to water. Despite possessing surface tension larger than any other liquid (near room temperature), gallium can form nonspherical shapes due the thin, solid native oxide skin forms rapidly oxygen. These properties enable new ways pattern metals (e.g., injection printing) create stretchable soft devices with an unmatched combination of mechanical electrical properties. The be transferred substrates manipulated electrochemically lower interfacial near zero. reactivity drive wide range reactions. state makes it easy break into particles for making colloids composites have unusual deformable nature filler. This review summarizes truly unique exciting metals.