Anisotropic deformation of Au nanoparticles by highly charged ion Xe21+ irradiation

被引：1
|
作者：
Liu, Xueliang [1 ,2 ,3 ]
Xu, Zhongfeng [1 ,2 ,3 ,4 ]
Zhao, Yongtao [1 ,2 ,4 ]
Liu, Lili [1 ,2 ,3 ]
Wang, Yuyu [4 ]
Chen, Liang [1 ,2 ,3 ]
Li, Dehui [4 ]
Zeng, Lixia [1 ,2 ,3 ,5 ]
Zhao, Di [1 ,2 ,3 ]
Xiao, Guoqing [1 ,2 ,4 ]
机构：
[1] Xi An Jiao Tong Univ, HCI Joint Ctr, Xian 710049, Peoples R China
[2] Natl Lab Heavy Ion Res Facil Lanzhou, Xian 710049, Peoples R China
[3] Xi An Jiao Tong Univ, Dept Appl Phys, Xian 710049, Peoples R China
[4] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[5] Xianyang Normal Univ, Sch Phys & Elect Engn, Xianyang 712000, Peoples R China
来源：
PHYSICA SCRIPTA | 2013年 / T156卷
关键词：
ELECTRON-EMISSION; BEAM SYNTHESIS; AMORPHOUS SOLIDS; SILICA; TRACKS; BOMBARDMENT; PARTICLES; SURFACE; MODEL; NEON;
D O I：
10.1088/0031-8949/2013/T156/014064
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present a detailed study of the deformation of Au nanoparticles (NPs) caused by the irradiation of highly charged ions (HCIs). When spherical Au NPs with a diameter of 19.8 nm were irradiated by 1 MeV Xe21+ ions with a fluence of 2 x 10(14) cm(-2), their anisotropic deformation was observed by atomic force microscopy. The results show that spherical Au NPs expand perpendicular to the ion beam changing their shape to oblate ellipsoidal. The size aspect ratio (major over minor axis) of the observed deformed Au NPs is about 1.23. The deformation process is described by a viscoelastic thermal spike model. The HCI beam deformation technique provides a unique method to tailor the shape of noble metal NPs.
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页数：4
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