Fig. 4: Stress–strain curves in the presence of random defects or under uniaxial compression.
From: Soft three-dimensional network materials with rational bio-mimetic designs
a Visualization the randomly distributed defects (i.e., missing microstructures) in soft octahedral network materials with two typical defect densities (1% and 5%). b J-shaped stress–strain curves of soft octahedral network materials with 0%, 1%, and 5% random defects. For each level of defect density, at least three samples with different distributions of random defects are taken into account. c Influence of the randomly distributed defects on the effective critical stress. d Measured stress–strain curves under uniaxial compression, for soft 3D network materials with three different topologies (cubic, octahedral, and octet). All of the structures consist of 2 × 2 × 2 unit cells and the same helical microstructures as those in Fig. 2. e Optical images of the three soft network structures under different levels of uniaxial compression. Scale bars, 5 mm in e.
