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Characterization of multi-layered fish scales (Atractosteus spatula) using nanoindentation, X-ray CT, FTIR, and SEM.

Authors
  • Allison, Paul G1
  • Rodriguez, Rogie I2
  • Moser, Robert D3
  • Williams, Brett A3
  • Poda, Aimee R4
  • Seiter, Jennifer M4
  • Lafferty, Brandon J4
  • Kennedy, Alan J4
  • Chandler, Mei Q3
  • 1 Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center; [email protected]
  • 2 Department of Mechanical Engineering, University of Alabama.
  • 3 Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center.
  • 4 Environmental Laboratory, U.S. Army Engineer Research and Development Center.
Type
Published Article
Journal
Journal of Visualized Experiments
Publisher
MyJoVE Corporation
Publication Date
Jul 10, 2014
Issue
89
Identifiers
DOI: 10.3791/51535
PMID: 25046233
Source
Medline
License
Unknown

Abstract

The hierarchical architecture of protective biological materials such as mineralized fish scales, gastropod shells, ram's horn, antlers, and turtle shells provides unique design principles with potentials for guiding the design of protective materials and systems in the future. Understanding the structure-property relationships for these material systems at the microscale and nanoscale where failure initiates is essential. Currently, experimental techniques such as nanoindentation, X-ray CT, and SEM provide researchers with a way to correlate the mechanical behavior with hierarchical microstructures of these material systems1-6. However, a well-defined standard procedure for specimen preparation of mineralized biomaterials is not currently available. In this study, the methods for probing spatially correlated chemical, structural, and mechanical properties of the multilayered scale of A. spatula using nanoindentation, FTIR, SEM, with energy-dispersive X-ray (EDX) microanalysis, and X-ray CT are presented.

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