Surface transformation of carbon nanotube powder into super-hydrophobic and measurement of wettability

The Owens-Wendt plot using the contact angles of CNT powders with three liquids. The total surface free energies for CNTs before/after NF3-plasma were calculated to be 82.6 mJ/m2 and to 0.12 mJ/m2 for 10 min plasma-treated CNT powder. Dispersion-behaviours of CNT powders in water are shown in the inset of figure.