Fig. 3
From: Anisotropic and self-healing hydrogels with multi-responsive actuating capability

Anisotropically mechanical behavior. a Tensile stress–strain curves of SNPP hydrogel with stress applied parallel and perpendicular to the AgNP lamella. b Tangent modulus ratio (E∥/E⊥) calculated from tensile stress-strain curves of SNPP hydrogels, plotted against the content of silver NPs. c E∥/E⊥ of hydrogels fabricated by nanostructures with varying sizes, morphologies, and compositions. Error bars show the SD with sample size of 3