Fig. 1From: Studies on the electrostatic effects of stretched PVDF films and nanofibersa Schematic diagram of the experimental setup for stretching of PVDF film; b The PLM images of PVDF films during the stretching with different tensile ratios, λ = 1 (i), λ = 1.02 (ii), λ = 1.04 (iii), λ = 1.06 (iv), λ = 1.08 (v), λ = 1.1 (vi), λ = 1.2 (vii), λ = 1.3 (viii), λ = 1.4 (ix)Back to article page