Nanoscale morphology and indentation of individual nacre tablets from the gastropod mollusc Trochus niloticus
نویسندگان
چکیده
B.J.F. Bruet Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 H.J. Qi and M.C. Boyce Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 R. Panas, K. Tai, L. Frick, and C. Ortiz Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
منابع مشابه
Polarimetry of Pinctada fucata nacre indicates myostracal layer interrupts nacre structure
The inner layer of many bivalve and gastropod molluscs consists of iridescent nacre, a material that is structured like a brick wall with bricks consisting of crystalline aragonite and mortar of organic molecules. Myostracal layers formed during shell growth at the point of muscle attachment to the shell can be found interspersed within the nacre structure. Little has been done to examine the e...
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BACKGROUND Behaviour and time spent active and inactive are key factors in animal ecology, with important consequences for bioenergetics. For the first time, here, we equipped the gastropod Tectus (= Trochus) niloticus with accelerometers to describe activity rhythms at two sites in the Southwest Pacific with different temperature regimes: New Caledonia and Vanuatu. RESULTS Based on a 24-hour...
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Intricate biomineralization processes in molluscs engineer hierarchical structures with meso-, nano- and atomic architectures that give the final composite material exceptional mechanical strength and optical iridescence on the macroscale. This multiscale biological assembly inspires new synthetic routes to complex materials. Our investigation of the prism-nacre interface reveals nanoscale deta...
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In the Pacific, the protection of coral reef resources is often achieved through the implementation of village-based marine reserves (VBMRs). While substantial fisheries benefits are often reported, results of quantitative approaches are controversial for benthic macroinvertebrates, whose life history traits may cause low congruence with protective measures implemented at non-ecologically relev...
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Nacre (mother-of-pearl) from mollusc shells is a biologically formed lamellar ceramic. The inelastic deformation of this material has been experimentally examined, with a focus on understanding the underlying mechanisms. Slip along the lamellae tablet interface has been ascertained by testing in compression with the boundaries oriented at 45° to the loading axis. The steady-state shear resistan...
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