Table 1.

Physical properties of gallium‐based liquid metals and common fluids and conductors

	Melting point [°C]	Density [g cm−3]	Electrical resistivity [µΩ cm]	Thermal conductivity [W m−1⋅K−1]
Gallium	29.8	5.91	27.2	30.54
EGaIn	15.5	6.25	29.4	26.43
Galinstan	10.7	6.44	30.3	25.41
DI Water	0	1	1.82 × 1013	0.6
Copper	1084.6	8.96	1.678	401
Silver	961.8	10.49	1.587	429
Imidazolium‐based ionic liquids (room‐temperature)	N/A (below room temperature)	1–1.4	9.524 × 105–6.826 × 106 (ref. [57])	N/A
PEDOT:PSS	>300 a)	1.011	≈1 × 106 (Pristine film[ 58 ]) as low as 217.4 (upon treatment[ 59 ])	0.1–2.2 (ref. [60])

^a)There is a reference indicating the melting point might be 146 °C.^{[ 61 ]}