Fig. 4

(a) Schematic illustration of the auxetic piezoresistive textronic structure, (b) geometry of the unit cell under load-free and critical strain conditions, and (c) force components at critical strain.

(a) Schematic illustration of the auxetic piezoresistive textronic structure, (b) geometry of the unit cell under load-free and critical strain conditions, and (c) force components at critical strain.