Elongation of gold nanoparticles in silica glass by irradiation with swift heavy ions

被引：83

作者：

Awazu, Koichi

Wang, Xiaomin

Fujimaki, Makoto

Tominaga, Junji

Aiba, Hirohiko ^{[1
]}

Ohki, Yoshimichi ^{[1
]}

Komatsubara, Tetsuro ^{[2
]}

机构：

[1] Waseda Univ, Dept Elect Engn & Biosci, Tokyo 1698555, Japan

[2] Univ Tsukuba, Tsukuba, Ibaraki 3058577, Japan

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.78.054102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We examined the mechanism whereby nanoparticles of gold embedded in silica become elongated and oriented parallel to each other on ion irradiation. Elongation occurred for gold particles with radii smaller than 25 nm. The process was simulated by using a thermal spike model. For small-radius nanoparticles, ion irradiation raises the temperature above the melting points of both gold and silica, whereas for larger nanoparticles neither the gold nanoparticle nor the surrounding silica matrix is melted.

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页数：8

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