Ageing dynamics of ion bombardment induced self-organization processes.
Ageing dynamics of ion bombardment induced self-organization processes.
复制标题
离子轰击引起的自组织过程的老化动力学。
DOI：
10.1038/srep01850
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发表时间：
2013
影响因子：
4.6
通讯作者：
Bikondoa O
中科院分区：
文献类型：
--
作者：
Bikondoa O
在离子束侵蚀表面期间引起的不稳定性可导致纳米结构的自组织图案的形成。理解自组织过程不仅需要原位表征系综平均性质，还需要探索动力学。这可以通过使用相干X射线并分析散射强度的时间相关性来完成。在这里，我们表明，半导体表面纳米图案的正入射离子束溅射的动力学是年龄依赖性和溅射时间减慢。这项工作提供了一个新的洞察侵蚀动力学，并打开了新的视角的理解自组织机制。
Instabilities caused during the erosion of a surface by an ion beam can lead to the formation of self-organized patterns of nanostructures. Understanding the self-organization process requires not only the in-situ characterization of ensemble averaged properties but also probing the dynamics. This can be done with the use of coherent X-rays and analyzing the temporal correlations of the scattered intensity. Here, we show that the dynamics of a semiconductor surface nanopatterned by normal incidence ion beam sputtering are age-dependent and slow down with sputtering time. This work provides a novel insight into the erosion dynamics and opens new perspectives for the understanding of self-organization mechanisms.