大连理工大学主页平台管理系统张莹莹 Interactions of moving charged particles with triple-walled carbon nanotubes 中文主页

论文成果

Interactions of moving charged particles with triple-walled carbon nanotubes: 点击次数：; 发布时间： 2019-03-11; 发布时间：2019-03-11; 论文类型：期刊论文; 发表时间：2017-08-29; 发表刊物：EUROPEAN PHYSICAL JOURNAL D; 收录刊物：SCIE、Scopus; 卷号：71; 期号：8; ISSN号：1434-6060; 摘要：We study plasmon excitations and channeling trajectories of charged particles in triple-walled carbon nanotubes (TWNTs) based on a semi-classical kinetic model combined with the Molecular Dynamics method. Numerical results show that the outer and inner tubes of a TWNT exert strong influence on the peak structures of the self-energy (or the image potential) and the stopping power curves for the channeling ion, resulting in one or two narrow peaks in the low speed region. In addition, the radial dependencies of the total potential, which includes the image potential due to dynamic polarization of the electron gas in nanotubes and a reactive empirical bond order potential for atomic interactions, are compared for single-walled carbon nanotubes (SWNTs), double-walled carbon nanotubes (DWNTs) and TWNTs. By comparing the ion channeling trajectories in those types of nanotubes, we conclude that the variation of the total energy of ions with their channeling distance along the nanotube axis is related to the types of channeling trajectories, exhibiting smooth helical shapes in TWNTs and a succession of sharp reflections off the wall in SWNTs and DWNTs.

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张莹莹

个人学术主页

高级工程师

性别：女

毕业院校：大连理工大学

学位：博士

所在单位：物理学院

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