Coherently aligned nanoparticles within a biogenic single crystal: A biological prestressing strategy

Author:

Polishchuk Iryna1ORCID,Bracha Avigail Aronhime1,Bloch Leonid1ORCID,Levy Davide1ORCID,Kozachkevich Stas1,Etinger-Geller Yael1,Kauffmann Yaron1ORCID,Burghammer Manfred2,Giacobbe Carlotta2,Villanova Julie2ORCID,Hendler Gordon3,Sun Chang-Yu4,Giuffre Anthony J.4ORCID,Marcus Matthew A.5ORCID,Kundanati Lakshminath6ORCID,Zaslansky Paul7,Pugno Nicola M.689ORCID,Gilbert Pupa U. P. A.4ORCID,Katsman Alex1,Pokroy Boaz1ORCID

Affiliation:

1. Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel.

2. The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France.

3. Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA.

4. Departments of Physics, Chemistry, Geoscience, University of Wisconsin–Madison, Madison, WI 53706, USA.

5. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

6. Laboratory of Bio-Inspired and Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 38123 Trento, Italy.

7. Department for Restorative and Preventive Dentistry, Centrum für Zahn-, Mund- und Kieferheilkunde, Charité–Universitätsmedizin Berlin, 14197 Berlin, Germany.

8. School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK.

9. Ket-Lab, Edoardo Amaldi Foundation, Italian Space Agency, Via del Politecnico snc, 00133 Rome, Italy.

Abstract

Many roads to being tough A number of routes exist to increase toughness in both natural and human-made materials—for example, using secondary phases and precipitates or exploiting tailored architectures and shaped crystals. Polishchuk et al. detail the nanoscale internal structure of calcitic microlenses formed by a brittlestar (see the Perspective by Duffy). The segregation of magnesium-rich particles forms a secondary phase that places compressive stresses on the host matrix. This toughening mechanism resembles Guinier-Preston zones known in classical metallurgy. Science , this issue p. 1294 see also p. 1254

Funder

NSF

DOE

Alon Fellowship for Outstanding Young Researchers of the Israeli Council for Higher Education

European Research Council PoC

European Commission H2020 under the Graphene Flagship Core 1

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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