Ion beam shaping of Au nanoparticles prepared by micellar technique

被引：5

作者：

Dawi, E. A. ^{[1
]}

Klimmer, A. ^{[2
]}

Rizza, G. ^{[3
]}

Ziemann, P. ^{[2
]}

机构：

[1] Univ Utrecht, Debye Inst Nanomat, Nanophoton Sect, NL-3508 TA Utrecht, Netherlands

[2] Univ Ulm, Inst Solid State Phys, D-89069 Ulm, Germany

[3] Ecole Polytech, CNRS, Solides Irradies Lab, DSM IRAMIS, F-91128 Palaiseau, France

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2010年 / 268卷 / 05期

关键词：

Au nanoparticles; Ion irradiation; Au nanorods; Au nanowires; IRRADIATION; NANORODS; NANOSTRUCTURES; DEFORMATION; FABRICATION; PARTICLES; ARRAYS; SILICA; YIELD;

D O I：

10.1016/j.nimb.2009.11.016

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Irradiation-induced burrowing and ion-induced shaping effects of Au nanoparticles are investigated. Hexagonally arranged Au nanoparticles prepared by micellar technique with diameter similar to 10 nm and inter-particle distance of about 80 nm were sequentially irradiated with 200 key Ar+ ions to fluences of 5 x 10(15) ions/cm(2). Irradiation with Argon ions causes sinking of the Au nanoparticles into the subjacent SiO2 layer due to capillary driving forces related to specific wetting conditions while the spherical shape is conserved. Subsequent irradiation with 54 MeV Ag8+ swift heavy ions of these spherical Au nanoparticles confined within a silica matrix shapes them into prolate nanorods and nanowires whose principal axes are aligned along the beam direction. Above a threshold fluence two deformation regimes have been observed. For relatively low fluences Au nanoparticles elongate into nanorods depending on their volume. For high fluences, the formation of nanowires is observed provided that the inter-particle distance is short enough to allow for an efficient mass transport through the silica matrix. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：481 / 484

页数：4

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