caa a22 4500 528786040 20190713030955.0 cr unu---uuuuu 180924s2016 xx s 000 0 eng 10.3929/ethz-b-000125517 doi 10.1038/ncomms13912 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/125517 Bio-inspired self-shaping ceramics [Elektronische Daten] [Fabio L. Bargardi, Hortense; id_orcid 0000-0003-3017-9403 Le Ferrand, Rafael Libanori, André R. Studart] Nat Commun Open access ethresearch Shaping ceramics into complex and intricate geometries using cost-effective processes is desirable in many applications but still remains an open challenge. Inspired by plant seed dispersal units that self-fold on differential swelling, we demonstrate that self-shaping can be implemented in ceramics by programming the material's microstructure to undergo local anisotropic shrinkage during heat treatment. Such microstructural design is achieved by magnetically aligning functionalized ceramic platelets in a liquid ceramic suspension, subsequently consolidated through an established enzyme-catalysed reaction. By fabricating alumina compacts exhibiting bio-inspired bilayer architectures, we achieve deliberate control over shape change during the sintering step. Bending, twisting or combinations of these two basic movements can be successfully programmed to obtain a myriad of complex shapes. The simplicity and the universality of such a bottom-up shaping method makes it attractive for applications that would benefit from low-waste ceramic fabrication, temperature-resistant interlocking structures or unusual geometries not accessible using conventional top-down manufacturing. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Bargardi Fabio L. joint author Le Ferrand Hortense; id_orcid 0000-0003-3017-9403 joint author Libanori Rafael joint author Studart André R. joint author Nature Communications London : Nature Publishing Group 7, p. 13912 2041-1723 http://hdl.handle.net/20.500.11850/125517 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/125517 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- Bargardi Fabio L. joint author ETHRESEARCH 700 1- Le Ferrand Hortense; id_orcid 0000-0003-3017-9403 joint author ETHRESEARCH 700 1- Libanori Rafael joint author ETHRESEARCH 700 1- Studart André R. joint author ETHRESEARCH 773 0- Nature Communications London : Nature Publishing Group 7, p. 13912 2041-1723 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access