Fig. 3: Parametric study for the optimization of LIO.
From: 3D printed leech-inspired origami dry electrodes for electrophysiology sensing robots
a Schematics of different leech-inspired origami (LIO) designs. The auxetic origami is tailored by changing the angle of triangular patterns. b Poisson’s ratio of the non-auxetic and auxetic parts of the LIO at the z-directional strain. c Actual images of auxetic origami to represent transverse strain (εtrans) at z-directional compression (εaxial). d Rotated angles at the z-directional compression. e The stress–stain curve of the LIO design with the angular of σ = 30°, β = 40°. f Elastic modulus of LIO designs with different angles. Error bars represent the standard deviation.
