Fabrication and absorption properties based on ZnO nanocomposites adjusted by length–diameter ratio of ZnO nanorods

A series of ZnO nanorods (NR) with different length to diameters have been synthesized. The absorption properties of ZnO-NR/PVDF composites were investigated based on the same filler content. The results indicated that the ZnO-NR3/PVDF composites with a filler loading of 20 wt% showed the best absorption properties with two sharp peaks of −18.90 dB at 13.80 GHz and −6.8 dB at 7.2 GHz; the relationship between the ratio of length to diameter and the absorption properties were also studied.