Glass-to-metal seal absorb the stresses from thermal expansion mismatches. Due to its very low vapor pressure, indium finds use in glass-metal seals used in vacuum technology. Gallium is a soft metal with melting point at 30 °C. It readily wets glasses and most metals and can be used for seals that can be assembled/disassembled by just slight heating. It can be used as a liquid seal up to high temperatures or even at lower temperatures when alloyed with other metals (e.g. as galinstan). Mercury is a metal liquid at normal temperature. It was used as the earliest glass-to-metal seal and is still
Liquid metal make a small flexible antenna. In Mathieu's paper, a method for implementing a 3D flexible antenna is proposed. The method uses a Fused Deposition Modeling (FDM) technique to fabricate a dielectric radome in a NinjaFlex flexible plastic. This technique can also be used to design fully flexible antennas. The main advantage of this method is that it can realize 3D structures with large thickness values. Antenna material and structural parameters like this: 1. the Galinstan liquid metal(68.5%Ga, 21.5%In, 10%Sn, conductivity3.46×106S/m), which is used to realize the radiating element; 2. the NinjaFlex flexible plastic used to realize, through a 3D FDM