Extended Data Fig. 7: Directional OHT sample.
From: Three-dimensional printing of hierarchical liquid-crystal-polymer structures
a, Print lines are guided around the hole, resembling a wood knot hole. The stress-shielded area next to the hole is reinforced with 90° filaments. b, The extensive damage to the same sample without catastrophic failure during tensile testing illustrates the high fracture toughness of the hierarchically structured architecture.
