Strategies for simultaneous strengthening and toughening via nanoscopic intracrystalline defects in a biogenic ceramic
| dc.contributor.author | Deng, Zhifei | en |
| dc.contributor.author | Chen, Hongshun | en |
| dc.contributor.author | Yang, Tin | en |
| dc.contributor.author | Jia, Zia | en |
| dc.contributor.author | Weaver, James C. | en |
| dc.contributor.author | Shevchenko, Pavel D. | en |
| dc.contributor.author | De Carlo, Francesco | en |
| dc.contributor.author | Mirzaeifar, Reza | en |
| dc.contributor.author | Li, Ling | en |
| dc.date.accessioned | 2021-01-06T13:58:13Z | en |
| dc.date.available | 2021-01-06T13:58:13Z | en |
| dc.date.issued | 2020 | en |
| dc.description.abstract | While many organisms synthesize robust skeletal composites consisting of spatially discrete organic and mineral (ceramic) phases, the intrinsic mechanical properties of the mineral phases are poorly understood. Using the shell of the marine bivalve Atrina rigida as a model system, and through a combination of multiscale structural and mechanical characterization in conjunction with theoretical and computational modeling, we uncover the underlying mechanical roles of a ubiquitous structural motif in biogenic calcite, their nanoscopic intracrystalline defects. These nanoscopic defects not only suppress the soft yielding of pure calcite through the classical precipitation strengthening mechanism, but also enhance energy dissipation through controlled nano- and micro-fracture, where the defects’ size, geometry, orientation, and distribution facilitate and guide crack initialization and propagation. These nano- and micro-scale cracks are further confined by larger scale intercrystalline organic interfaces, enabling further improved damage tolerance. | en |
| dc.description.sponsorship | L.L. gratefully acknowledges the support from the Air Force Office of Scientific Research (Grant FA9550-19-1-0033) and the Institute for Critical Technology and Applied Science, Virginia Tech. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. | en |
| dc.identifier.doi | https://doi.org/10.1038/s41467-020-19416-2 | en |
| dc.identifier.uri | http://hdl.handle.net/10919/101760 | en |
| dc.identifier.volume | 11 | en |
| dc.language.iso | en_US | en |
| dc.publisher | Springer Nature | en |
| dc.rights | Attribution 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en |
| dc.title | Strategies for simultaneous strengthening and toughening via nanoscopic intracrystalline defects in a biogenic ceramic | en |
| dc.title.serial | Nature Communications | en |
| dc.type | Article - Refereed | en |