A molecular dynamics simulation study of irradiation induced defects in gold nanowire
文献类型：期刊论文
| 作者 | Liu, Wenqiang1,2; Chen, Piheng3; Qiu, Ruizhi3; Khan, Maaz1; Liu, Jie1 ; Hou, Mingdong1; Duan, Jinglai1
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| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
 |
| 出版日期 | 2017-08-15 |
| 卷号 | 405页码:22-30 |
| ISSN号 | 0168-583X |
| 关键词 | Displacement cascade Nanowires Molecular dynamics Defects Radiation resistance |
| DOI | 10.1016/j.nimb.2017.05.016 |
| 英文摘要 | Displacement cascade in gold nanowires was studied using molecular dynamics computer simulations. Primary knock-on atoms (PKAs) with different kinetic energies were initiated either at the surface or at the center of the nanowires. We found three kinds of defects that were induced by the cascade, including point defects, stacking faults and crater at the surface. The starting points of PICAS influence the number of residual point defects, and this consequently affect the boundary of anti-radiation window which was proposed by calculation of diffusion of point defects to the free surface of nanowires. Formation of stacking faults that expanded the whole cross-section of gold nanowires was observed when the PICA's kinetic energy was higher than 5 keV. Increasing the PICA's kinetic energy up to more than 10 keV may lead to the formation of crater at the surface of nanowires due to microexplosion of hot atoms. At this energy, PICAS started from the center of nanowires can also result in the creation of crater because length of cascade region is comparable to diameter of nanowires. Both the two factors, namely initial positions of PICAS as well as the craters induced by higher energy irradiation, would influence the ability of radiation resistance of metal nanowires. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | STACKING-FAULT TETRAHEDRA ; DISPLACEMENT CASCADES ; COLLISION CASCADES ; RADIATION-DAMAGE ; GRAIN-BOUNDARIES ; ION IRRADIATION ; FCC METALS ; BCC IRON ; ACCUMULATION ; SURFACES |
| 资助项目 | National Natural Science Foundation of China[11375241] |
| WOS研究方向 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000404501200004 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/45035]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Liu, Jie; Duan, Jinglai |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Sci & Technol Surface Phys & Chem Lab, POB 718-35, Mianyang 621907, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wenqiang,Chen, Piheng,Qiu, Ruizhi,et al. A molecular dynamics simulation study of irradiation induced defects in gold nanowire[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2017,405:22-30. |
| APA | Liu, Wenqiang.,Chen, Piheng.,Qiu, Ruizhi.,Khan, Maaz.,Liu, Jie.,...&Duan, Jinglai.(2017).A molecular dynamics simulation study of irradiation induced defects in gold nanowire.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,405,22-30. |
| MLA | Liu, Wenqiang,et al."A molecular dynamics simulation study of irradiation induced defects in gold nanowire".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 405(2017):22-30. |
入库方式： OAI收割
来源：近代物理研究所
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