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北京石油化工学院2026年研究生招生接收调剂公告
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weijiao

木虫 (正式写手)

[交流] NM上metallic glass 最新文章 已有2人参与

Local elastic properties of a metallic glass
Hannes Wagner,1 Dennis Bedorf,1 Stefan Küchemann,1 Moritz Schwabe,1 Bo Zhang,1 Walter Arnold1, 2 & Konrad Samwer1

Nature Materials   Year published: (2011) DOI: doi:10.1038/nmat3024
        The nature of non-crystalline materials causes the local potential energy of a cluster of atoms or molecules to vary significantly in space. Different configurations of an ensemble of atoms in a metallic glass lead therefore to a distribution of elastic constants which also changes in space. This is totally different to their crystalline counterparts, where a long-range order exists in space and therefore a much more unified elastic modulus is expected. Using atomic force acoustic microscopy, we present data which show that the local so-called indentation modulus M indeed exhibits a wide distribution on a scale below 10 nm in amorphous PdCuSi, with ΔM/M≈30%. About 104 atoms are probed in an individual measurement. Crystallized PdCuSi shows a variation that is 10–30 times smaller and which is determined by the resolution of the microscope and by the polycrystalline structure of the material.

链接:http://www.nature.com/nmat/journ ... /full/nmat3024.html
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imrsfb

铁杆木虫 (著名写手)

谢谢分享!!
2楼2011-05-23 17:11:22
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imrsfb

铁杆木虫 (著名写手)


小木虫(金币+0.5):给个红包,谢谢回帖
atomic force acoustic microscopy

啥东东啊?
3楼2011-05-23 17:13:27
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imrsfb

铁杆木虫 (著名写手)


小木虫(金币+0.5):给个红包,谢谢回帖
引用回帖:
Originally posted by weijiao at 2011-05-23 11:40:51:
Local elastic properties of a metallic glass
Hannes Wagner,1 Dennis Bedorf,1 Stefan Küchemann,1 Moritz Schwabe,1 Bo Zhang,1 Walter Arnold1, 2 & Konrad Samwer1

Natur ...

Here is the paper!
4楼2011-05-23 17:18:10
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gguoyun

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小木虫(金币+0.5):给个红包,谢谢回帖
楼上的是好人!刚刚的。
痛苦终会过去,美好的会留下来!
5楼2011-06-08 08:54:55
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