Figure 6From: Progress in Bio-inspired Anti-solid Particle Erosion Materials: Learning from Nature but Going beyond Nature(a) The inner iridescent region of a gastropod (Haliotis laevigata) [21]; (b) The fractured cross section of the nacreous layer obtained by scanning electron microscopy (SEM) [21]; (c) A close-up view on the platelets obtained by high-magnification SEM [21]; (d) Schematic diagram of the fracture resistance of brick and mortar structure [76]Back to article page