Open AccessHighly charged ion beam-induced size modification of Au nanoparticles
Author(s) -
Xu Zhongfeng,
Lili Liu,
Zhao Yong-Tao,
Liang Chen,
Zhu Jian,
Yuyu Wang,
Xiao Guo-qing
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.3833
Subject(s) - ostwald ripening , materials science , ion , transmission electron microscopy , nanoparticle , ion beam mixing , atomic physics , ion beam , electron cyclotron resonance , projectile , scanning electron microscope , chemical physics , analytical chemistry (journal) , nanotechnology , ion beam deposition , chemistry , physics , composite material , organic chemistry , chromatography , metallurgy
Size modification of Au nanoparticles NPs, deposited on the Au-thick film surface, induced by highly charged ions HCI 40Ar12+ with fixed low dose 4.3×1011 ions/cm2 but various energyies ranged from 146.64keV to 290.64keV at room temperature 293.15K, was investigated by atomic force microscopy AFM and transmission electron microscopy TEM. The selected 40Ar12+ beams were provided by electron cyclotron resonance source ECRIS of the National Laboratory of the Heavy Ion Research Facility in Lanzhou HIRFL. The morphological changes of NPs were interpreted by collisional mixing model, Ostwald ripening OR model and inverse Ostwald ripening IOR model of spherical NPs on a substrate. Theoretical and experimental studies both prove that there exist the critical energy E*, for low ion energy EE*, the mean diameter R of NPs increases with the increasing energy of incident ions E, while for higher projectile energy E>E*, it decreases with increasing energy.