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. Author manuscript; available in PMC: 2016 Feb 10.
Published in final edited form as: Polymer (Guildf). 2014 Dec 24;58:30–35. doi: 10.1016/j.polymer.2014.12.031

Figure 3.

Figure 3

Cross sectional SEM images of nano-PPX films under pressure of (a) 0 MPa (θ = 45°), (b) 0.044 MPa (θ = 32°), (c) 0.180 MPa (θ = 24°), and (d) 0.830 MPa (θ = 20°) respectively. Insets are top view SEM images of nano-PPX with roughness values of 0.29±0.1, 0.21±0.1, 0.16±0.1, 0.18±0.1 µm respectively. (e) Droplet speeds as a function of pressure on nano-PPX surfaces.