H+|N+和Ar+离子束辐射诱导碳纳米结构的变化

A Ishaq1; Shahid Iqbal1; 2; Naveed Ali1; A A Khurram1; A U Akrajas3

doi:10.1016/S1872-5805(13)60068-2

H+|N+和Ar+离子束辐射诱导碳纳米结构的变化

doi: 10.1016/S1872-5805(13)60068-2

National Center for Physics, Quaid-i-Azam University, Islamabad 44000, Pakistan|
Center of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan|
Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Malaysia|
School of Physical Sciences, Department of Physics, University of the Punjab, Quid-i-Azam Campus Lahore 54590, Pakistan|

详细信息

中图分类号: TQ127.1+1
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出版历程
- 收稿日期: 2012-11-22
- 录用日期: 2013-05-08
- 修回日期: 2013-04-02
- 刊出日期: 2013-04-20

H+, N+, and Ar+ ion irradiation induced structure changes of carbon nanostructures

National Center for Physics, Quaid-i-Azam University, Islamabad 44000, Pakistan|
Center of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan|
Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Malaysia|
School of Physical Sciences, Department of Physics, University of the Punjab, Quid-i-Azam Campus Lahore 54590, Pakistan|

摘要

摘要: 在室温和高温下，以不同辐射剂量的H+、N+和Ar+离子辐照多壁碳纳米管和无定形碳纳米线。利用透射电镜和拉曼光谱研究多壁碳纳米管和无定形碳纳米线的结构变化及损伤。以70keV N+离子束辐射多壁碳纳米管在室温下可形成无定形碳纳米线。1000K下 70keV的H+离子束照射导致无定形碳纳米线向金刚石结构转变。离子辐照多壁碳纳米管的有序程度足够高，70keV的N+和Ar+离子能够引起碳从多壁碳纳米管的剥落。离子辐射能够为缺陷的转化提供必需的动力学驱动力。
- 多壁碳纳米管 /
- 离子束辐射 /
- 相转变 /
- 无定形碳纳米线 /
- 洋葱状碳
Abstract: The effects of H+, N+, and Ar+ ion irradiation on structural changes in multi-walled carbon nanotubes (MWCNTs) and amorphous carbon nanowires (a-CNWs) were investigated at room and elevated temperatures with different irradiation doses. It is found that at room temperature, defects were introduced in MWCNTs under 70 keV N+ ion beam irradiation at a low dose of 1×1016 ions/cm2 while MWCNTs transformed into a-CNWs at a high dose of 7×1016 ions/cm2. At 1 000 K, the 70 keV N+ ion beam irradiation of defective MWCNTs causes the curling of carbon clusters to an onion-like structure at a dose of 4×1016 ions/cm2 and the formation of a low density onion-like structure at 7×1016 ions/cm2. Irradiation of the defective MWCNTs by 70 keV Ar+ ion at 1 000 K and 7×1016 ions/cm2 leads to the formation of a high density onion-like structure. Irradiation of a-CNWs with 70 keV H+ ion at 1 000 K gradually increases the fraction of material with a diamond structure with increasing dose from 1×1016 to 1×1017 ions/cm2.
- MWCNTs /
- Ion irradiation /
- Phase transformation /
- a-CNWs /
- Carbon onion