کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5914633 | 1162747 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nanoscale structure and mechanical behavior of growth lines in shell of abalone Haliotis gigantea
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شناسی مولکولی
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چکیده انگلیسی
In the natural world, bottom-up hierarchical construction of complex structures results in materials with remarkable properties. A well known example is the nacre of mollusk shells, commonly called “mother of pearl”, whose excellent strength and toughness has been the subject of research for many decades. A significant discovery has been the presence of periodic layers called “growth lines”. These are thin distinct layers within the bulk of the shell which form periodically, with their structure affected by environmental changes. Studies of their formation and behavior offer valuable insight into the architecture of seashells. In this work, the structure and mechanical behavior of growth lines in shells of abalone Haliotis gigantea were investigated using electron microscopy and nanoindentation. Growth lines form directly out of nacre into layers of blocks and irregular particles. In comparison to nacre, they have basic structures, form rapidly, and are harder, which suggest that they serve a protective role during lifecycle transitions. This exemplifies how natural structures are able to closely control growth architecture in order to form different structures for different functions, all from the same base materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Structural Biology - Volume 174, Issue 1, April 2011, Pages 31-36
Journal: Journal of Structural Biology - Volume 174, Issue 1, April 2011, Pages 31-36
نویسندگان
Taro Sumitomo, Hideki Kakisawa, Yutaka Kagawa,