“…Among various morphologies of biominerals, one-dimensional building blocks are common in BMTs, and they tend to orient along the longitudinal direction, forming fiber array structures, such as fiber bundles, 57,83 prismatic layers [253][254][255] and fiberboards. 256,257 At a higher level, they assemble into more complex hierarchical ordered structures, such as alignment, 101,258,259 staggering, 260,261 stack-up, 262 helices, 263 etc. As shown in Fig.…”