Fig. 5: Results of the droplet impact tests.

a, b Droplet impact on the SHP PTFE foam with and without 1 Bar of N2 active plastron pressure control. (c) Droplet impact on hydrophobic nonporous PTFE sheets. d Droplet impact on a microscope glass slide. e Comparison of the contact time of the water droplets on the various test surfaces (n = 3). f CA of the test samples measured by sessile drop goniometry.