Table 1. Spreading Coefficient: Interfacial Tension Measured Using the Pendant Drop Method (All Units in dyn/cm).

oil type	γwa	γoa	γow	Sow	wrapping layer?
silicone oil	72.18	18.57	35.99	17.62	yes
mineral oil (Sigma-Aldrich)	72.18	27.87	51.07	–6.76	no
mineral oil (Hydrobrite 380)	72.18	31.47	53.09	–12.38	no
mineral oil (Hydrobrite 550)	72.18	31.50	54.04	–13.36	no