Table 4:
Properties of the testing system.
Viscosity
𝜂
(mPa s)
Density
𝜌
(kg/m³)
Surface tension
𝜎
(mN/m)
Contact angle
𝜃
(
°
)
Water
1
997
72.7
76.6
Water-glycerol (45 Wt%)
4.6
1113
70
69
Silicon-oil (DC5)
4.6
915
18.5
≈
7