Transmission electron microscopy observation of nanoscale deformation structures in nacre

Sumitomo, Taro, Kakisawa, Hideki, Owaki, Yusuke and Kagawa, Yutaka (2008) Transmission electron microscopy observation of nanoscale deformation structures in nacre. Journal of Materials Research, 23 12: 3213-3221. doi:10.1557/jmr.2008.0389


Author Sumitomo, Taro
Kakisawa, Hideki
Owaki, Yusuke
Kagawa, Yutaka
Title Transmission electron microscopy observation of nanoscale deformation structures in nacre
Journal name Journal of Materials Research   Check publisher's open access policy
ISSN 0884-2914
Publication date 2008-12
Sub-type Article (original research)
DOI 10.1557/jmr.2008.0389
Volume 23
Issue 12
Start page 3213
End page 3221
Total pages 9
Place of publication Warrendale, USA
Publisher Materials Research Society
Language eng
Subject 0912 Materials Engineering
Abstract The mechanical performance of nacre in seashells is generally described in terms of mesoscale mechanisms between mineral plates within the organic polymer matrix. However, recent work has reported nanostructures and organic material within individual plates and associated deformation mechanisms. In this work, we further investigated the nanoscale structure and mechanical behavior within individual plates of nacre by using two methods to induce fracture of plates: microindentation with focused ion beam preparation and ultramicrotomy. Using transmission electron microscopy, we observed deformation nanostructures and organic matrix within plates and identified nanoscale mechanisms, such as separation, shear, and matrix crack bridging.
Keyword Nacre
Microindentation
Focused ion beam preparation
Ultramicrotomy
Transmission electron microscopy
Nanostructures
Plate fracture
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Mechanical & Mining Engineering Publications
 
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