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Mechanical adaptation of brachiopod shells via hydration-induced structural changes.
Ihli, Johannes; Schenk, Anna S; Rosenfeldt, Sabine; Wakonig, Klaus; Holler, Mirko; Falini, Giuseppe; Pasquini, Luca; Delacou, Eugénia; Buckman, Jim; Glen, Thomas S; Kress, Thomas; Tsai, Esther H R; Reid, David G; Duer, Melinda J; Cusack, Maggie; Nudelman, Fabio.
Afiliación
  • Ihli J; Photon Science Division, Paul Scherrer Institut, Villigen PSI, Switzerland. Johannes.ihli@psi.ch.
  • Schenk AS; Department of Chemistry, Faculty of Biology, Chemistry & Earth Sciences, University of Bayreuth, and Bavarian Polymer Institute, Universitaetsstrasse 30, Bayreuth, Germany.
  • Rosenfeldt S; Department of Chemistry, Faculty of Biology, Chemistry & Earth Sciences, University of Bayreuth, and Bavarian Polymer Institute, Universitaetsstrasse 30, Bayreuth, Germany.
  • Wakonig K; Photon Science Division, Paul Scherrer Institut, Villigen PSI, Switzerland.
  • Holler M; ETH and University of Zürich, Institute for Biomedical Engineering, 8093, Zürich, Switzerland.
  • Falini G; Photon Science Division, Paul Scherrer Institut, Villigen PSI, Switzerland.
  • Pasquini L; Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, via F. Selmi 2, Bologna, Italy.
  • Delacou E; Department of Physics and Astronomy, University of Bologna, viale Berti-Pichat 6/2, Bologna, Italy.
  • Buckman J; School of Chemistry, the University of Edinburgh, Joseph Black Building, Edinburgh, UK.
  • Glen TS; Institute of GeoEnergy Engineering, School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Riccarton, Edinburgh, UK.
  • Kress T; School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK.
  • Tsai EHR; Department of Chemistry, University of Cambridge, Cambridge, UK.
  • Reid DG; Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA.
  • Duer MJ; Department of Chemistry, University of Cambridge, Cambridge, UK.
  • Cusack M; Department of Chemistry, University of Cambridge, Cambridge, UK.
  • Nudelman F; Munster Technological University, Bishopstown, Cork, T12 P928 & Tralee, Kerry, Cork, Ireland.
Nat Commun ; 12(1): 5383, 2021 09 10.
Article en En | MEDLINE | ID: mdl-34508091
The function-optimized properties of biominerals arise from the hierarchical organization of primary building blocks. Alteration of properties in response to environmental stresses generally involves time-intensive processes of resorption and reprecipitation of mineral in the underlying organic scaffold. Here, we report that the load-bearing shells of the brachiopod Discinisca tenuis are an exception to this process. These shells can dynamically modulate their mechanical properties in response to a change in environment, switching from hard and stiff when dry to malleable when hydrated within minutes. Using ptychographic X-ray tomography, electron microscopy and spectroscopy, we describe their hierarchical structure and composition as a function of hydration to understand the structural motifs that generate this adaptability. Key is a complementary set of structural modifications, starting with the swelling of an organic matrix on the micron level via nanocrystal reorganization and ending in an intercalation process on the molecular level in response to hydration.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Adaptación Fisiológica / Exoesqueleto / Estado de Hidratación del Organismo / Invertebrados Límite: Animals Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2021 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Adaptación Fisiológica / Exoesqueleto / Estado de Hidratación del Organismo / Invertebrados Límite: Animals Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2021 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Reino Unido