Figure 8.

Out-of-plane displacement measured across the diagonal of DEAs with (a) four fibers, 100 $\mathsf{\mu }$m dielectric thickness, operated at 8 kVs; (b) eight fibers, 200 $\mathsf{\mu }$m dielectric thickness, operated at 16 kVs; (c) eight fibers, 100 $\mathsf{\mu }$m dielectric thickness, operated at 8 kVs and (d); without fibers, 200 $\mathsf{\mu }$m dielectric thickness, operated at 16 kVs.