Fig. 2: Two bio-inspired motifs used in development of architected concrete.
From: Tough double-bouligand architected concrete enabled by robotic additive manufacturing
a Image of the Latimeria Chalumnae, commonly known as the Coelacanth fish (By courtesy of Encyclopædia Britannica, Inc., copyright 2021; used with permission.), b Coelacanth scales, c Schematic cross-sectional view of fish scale, d Schematic representation of the collagen fibril bundles comprising the fish scales with a pitch angle, γ (inter-fibril arrangement not shown for clarity); e Image of the Odontodactylus Scyllarus, commonly known as the mantis shrimp (Credit: Adobe Stock: stock.adobe.com), f Dactyl club of mantis shrimp (Credit: Adobe Stock: stock.adobe.com), g Schematic cross-sectional view of dactyl club, h Schematic representation of chitin fibril arrangement in the endocuticle of the dactyl club with a pitch angle, γ.
