THE LOCAL INSTABILITY OF NANOSTRUCTURES

机译：纳米结构的局部不稳定性

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In this paper we discuss an atomic-scale instability condition for detecting the local elastic limit in nanoscale systems. Without resorting to the continuum stability theory, we formulate an "atomic acoustic tensor" and use the singularity condition as an indicator to inspect local instabilities of the nanoscale structure. The derivation does not depend on the pristine lattice, thus, the indicator suits for not only perfect crystals but also defective media. To validate the applicability of this new quantity, we have performed local instability analysis on carbon nanotubes under axial tension. It is found that the criterion can characterize bond-breaking related instability in both perfect and defective nanotubes.

机译：在本文中，我们讨论了用于检测纳米尺度系统中局部弹性极限的原子尺度不稳定性条件。在不求助于连续性稳定性理论的情况下，我们制定了“原子声学张量”，并使用奇异性条件作为指标来检查纳米级结构的局部不稳定性。推导不依赖于原始晶格，因此，指示器不仅适用于完美的晶体，而且适用于有缺陷的介质。为了验证此新数量的适用性，我们在轴向张力下对碳纳米管进行了局部不稳定性分析。发现该标准可以表征完美和有缺陷的纳米管中与键断裂有关的不稳定性。

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来源
《American Society of Mechanical Engineers(ASME) Integrated Nanosystems Conference: Design, Synthesis, and Applications; 20050914-16; Berkeley,CA(US)》|2005年|P.89-90|共2页
会议地点 BerkeleyCA(US)
作者
Liang Zhang; Jia Lu;
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Center for Computer-Aided Design Department of Mechanical and Industrial Engineering University of Iowa Iowa City, Iowa 52242, USA;

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原文格式 PDF
正文语种 eng
中图分类半导体技术;
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THE LOCAL INSTABILITY OF NANOSTRUCTURES

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