I was especially impressed with the extruded metal process to make wires and to connect circuits. I could see an application for rapid prototype PCB's being made in the future (without the use of the old 'green wire' technique).
TJ – good statement; this IS jaw-dropping. I wonder how well it might stand up to any prolonged use, as it appears to be pretty "fluid" (or, damageable). Also, I have no idea how stable ( or, safe & non-toxic?) Gallium is. I do know from my work with touch-screens and LCDs that Indium is pretty inert.
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