Materials
Gallium-indium-tin (Galinstan, Ga ∼68.5 wt%, In ∼21.5 wt%, Sn ∼10
wt%, density: 6.44 kg/L) alloy and Gallium were purchased from Wochang
(P. R. China). Carbonyl iron (iron pentacarbonyl, size
~2 μm) powder was purchased from BASF. Tween 80 was
purchased from Aladdin. As water source deionized water (DI water) was
used. The experimental materials were used as received without any
further purification and treatment.