Fig. 9From: Superhydrophobic micro-nanofibers from PHBV-SiO2 biopolymer composites produced by electrospinninga Comparison of the WCAs and sliding angle of a 4 μL water droplet for four different sample designs; b micro-nanofibrous (MNS) bilayers before SA treatment; c SA modified beadless microfibers; d SA modified beaded nanofibers e SA modified MNS bilayers f PHBV/SiO2 film cast on a glass slideBack to article page