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Design strategies of nanofiller structure inspired by natural products. (a) Alignment: tooth enamel and mother of pearl/nacre. Twisting: Arapaima gigas scale and conch shells. (b) Nanocomposites with binary combinations of nanofillers. Reprinted with permission from refs (8, 81, and 92). Copyright 2017 Wiley-VCH and 2016 Royal Society of Chemistry.
