Use of nanoindentation for investigating the nanostructure of dentin tissue

Bo-Hsiung Wu, Chung Jen Chung, Chang Fu Han, Terry Yuan Fang Chen, Shu Fen Chuang, Wang Long Li, Jen Fin Lin

研究成果: Conference contribution

摘要

Human dentin contains millions of tubules, and the distribution and size of tubule is none-homogeneous, which resulting in various mechanical properties. In this study, we utilize a nanoindentor on the human dentin, and a focused ion-beam (FIB) is adopted to prepare the dentin specimen for transmission electron microscopy (TEM) to evaluate the nanostructure of human dentin after the residual impression of the nanoindents. The nanoindentation results show that the loading-unloading curve is continuous and smooth in both the loading and the unloading steps, which suggests that no cracking occurs. As to the TEM specimen, 50 nm thick specimens are prepared by FIB cross-sectioning. The nano-structural observations reveal that nanoindentation induces an atomic re-orientation, and the indent results in the formation of highstress deformation regions beneath the indenter. High resolution images via TEM and diffraction patterns indicate the dentin is poly-crystallized and present anisotropic properties.

原文English
主出版物標題Mechanics of Biological Systems and Materials - Proceedings of the 2011 Annual Conference on Experimental and Applied Mechanics
發行者Springer New York LLC
頁面153-158
頁數6
ISBN(列印)9781461402183
DOIs
出版狀態Published - 2011
事件2011 SEM Annual Conference on Experimental and Applied Mechanics - Uncasville, CT, United States
持續時間: 2011 六月 132011 六月 16

出版系列

名字Conference Proceedings of the Society for Experimental Mechanics Series
2
ISSN(列印)2191-5644
ISSN(電子)2191-5652

Other

Other2011 SEM Annual Conference on Experimental and Applied Mechanics
國家United States
城市Uncasville, CT
期間11-06-1311-06-16

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

指紋 深入研究「Use of nanoindentation for investigating the nanostructure of dentin tissue」主題。共同形成了獨特的指紋。

引用此