Figure 5
From: Contact Angle Measurement of Small Capillary Length Liquid in Super-repelled State
Contact angles of 13 different liquids measured on a superomniphobic SiO2 surface at different zooms with the accurate values shown as the horizontal dotted lines. (a) With no zoom, liquids with very small capillary lengths (fluorinated solvents) show deviations with their contact angles consistently underestimated. (b) Virtual zoom helps mitigating the deviation without readjusting the experiment setups. (c) With physical zoom and the proposed rule, the contact angles are obtained with a consistent accuracy regardless of the liquids. The dashed lines indicate the apparent contact angles measured with physical zoom and are drawn as visual guides for comparison with (a) and (b).
