Investigations of voids in the aragonite platelets of nacre

被引：84

作者：

Gries, Katharina ^{[1
,2
]}

Kroeger, Roland ^{[2
]}

Kuebel, Christian ^{[3
]}

Fritz, Monika ^{[1
]}

Rosenauer, Andreas ^{[2
]}

机构：

[1] Univ Bremen, Inst Biophys, D-28359 Bremen, Germany

[2] Univ Bremen, Inst Festkorperphys, D-28359 Bremen, Germany

[3] Fraunhofer Inst Fertigungstech & Angew Mat Forsch, Abt Klebetech & Oberflachen, D-28359 Bremen, Germany

来源：

ACTA BIOMATERIALIA | 2009年 / 5卷 / 08期

关键词：

Nacre; Void; Electron microscopy; Electron tomography; EELS; ELECTRON TOMOGRAPHY; SHELL; COMPOSITES;

D O I：

10.1016/j.actbio.2009.04.017

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We studied the structure of the aragonite platelets of Haliotis laevigata nacre, using conventional transmission electron microscopy, Z-contrast, electron tomography, energy-dispersive X-ray analysis and electron energy-loss spectroscopy. We observed faceted voids several nanometers wide within the aragonite platelets. The electron tomography investigations showed that the voids are distributed more or less randomly in the studied specimen and allowed an estimation of the order of magnitude of the width and the volumetric content of the voids. Further investigations of these voids revealed that they contain an increased amount of carbon, which suggests the existence of organic material within the voids. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：3038 / 3044

页数：7

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