Also: EGaIn, gallium-indium, Galinstan
Some gallium alloys are liquid at room temperature yet conduct like metal, so they can make stretchy wires and soft electronics.
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Dickey reviewed stretchable and soft electronics built using liquid metals.
Built / tested: stretchable electronics
As reported in: Dickey (2017). Stretchable and Soft Electronics using Liquid Metals. Advanced Materials. doi:10.1002/adma.201606425
Abstract only
Dickey and colleagues showed eutectic gallium-indium forms a thin skin that lets the liquid hold shapes in tiny channels.
Built / tested: stretchable wires
As reported in: Dickey, Chiechi, Larsen et al. (2008). Eutectic Gallium‐Indium (EGaIn): A Liquid Metal Alloy for the Formation of Stable Structures in Microchannels at Room Temperature. Advanced Functional Materials. doi:10.1002/adfm.200701216
Abstract only