Fig. 3From: Superhydrophobic micro-nanofibers from PHBV-SiO2 biopolymer composites produced by electrospinningSEM images of bilayers of SiO2 incorporated beadless microfibers (3 wt.% SiO2) and beaded nanofibers (1.7 wt.% SiO2) at different magnifications showing micro-nano-fibers within the same sampleBack to article page