Table 1.

Parameters of the nominal CD-DEG PTO prototype. The reported hyperelastic parameters might differ from those found in other papers since they have been obtained by fitting experimental data acquired on specimens tested with different states, ranges and rates of the imposed deformation and subjected to different pre-conditioning cycles to remove stress-softening effects.

material	acrylic VHB 4905
hyperelastic parameters	C1,0 = 5500 Pa, C0,1 = 570 Pa (μ = 12.1 kPa)
dielectric constant	ε = 4.2 · 8.85 · 10−12 F m−1
DEG stretched radius, e	195 mm
DEG unstretched thickness, t0	2 mm
pre-stretch, λp	3.5
thickness in the flat configuration, t = t0/λ2p	0.16 mm
No. of in-parallel dielectric layers	2