Wegst, U. G. K., Bai, H., Saiz, E., Tomsia, A. P. & Ritchie, R. O. Bioinspired structural materials. Nat. Mater. 14, 23–36 (2015). Article CAS PubMed Google Scholar Thomas, N. L. & Windle, A. H. A theory of case II diffusion. Polymer 23, 529–542 (1982). Article ADS CAS Google Scholar Luo, C. et al. Review