Controlled anisotropic deformation of Ag nanoparticles by Si ion irradiation

Oliver, A.; Reyes‐Esqueda, Jorge‐Alejandro; Cheang-Wong, J.C.; Román-Velázquez, C. E.; Crespo-Sosa, A.; Rodrı́guez-Fernández, L.; Seman, J. A.; Noguez, Cecilia

doi:10.1103/physrevb.74.245425

Cited by 122 publications

(111 citation statements)

References 23 publications

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“…513,[666][667][668][669][670][671][672][673][674][675][676][677][678] The effect has been repeated in many systems, and as a general rule the results indicate that nanoparticles in a wide range of metals can be elongated with a suitable irradiation condition. Irradiation of 5 nm Ag nanoparticles in silica with 8 MeV Si ions ͑which does not have an energy deposition high enough to be considered a swift heavy ion͒, was based on indirect optical measurements reported to produce particles FIG.…”

Section: B Elongation Of Nanoclusters By Swift Heavy Ionsmentioning

confidence: 99%

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Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

946

591

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A common misconception is that the irradiation of solids with energetic electrons and ions has exclusively detrimental effects on the properties of target materials. In addition to the well-known cases of doping of bulk semiconductors and ion beam nitriding of steels, recent experiments show that irradiation can also have beneficial effects on nanostructured systems. Electron or ion beams may serve as tools to synthesize nanoclusters and nanowires, change their morphology in a controllable manner, and tailor their mechanical, electronic, and even magnetic properties. Harnessing irradiation as a tool for modifying material properties at the nanoscale requires having the full microscopic picture of defect production and annealing in nanotargets. In this article, we review recent progress in the understanding of effects of irradiation on various zero-dimensional and one-dimensional nanoscale systems, such as semiconductor and metal nanoclusters and nanowires, nanotubes, and fullerenes. We also consider the two-dimensional nanosystem graphene due to its similarity with carbon nanotubes. We dwell on both theoretical and experimental results and discuss at length not only the physics behind irradiation effects in nanostructures but also the technical applicability of irradiation for the engineering of nanosystems.

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Section: B Elongation Of Nanoclusters By Swift Heavy Ionsmentioning

confidence: 99%

“…with a prolate shape. 668 Irradiation of 1-6 nm sized Au nanoparticles near the surface with 100 MeV Au ions was reported to lead to a growth in size. 670 However, because of the vicinity of the surface, part of the Au was also sputtered.…”

Section: B Elongation Of Nanoclusters By Swift Heavy Ionsmentioning

confidence: 99%

Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

946

591

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“…One is post-implantation treatment, such as annealing in different atmospheres [10] or ion irradiation. The embedded spherical NPs can be transfer to rodlike shape [11,12] or caused alignment of NP [13] by swift ion irradiation, which is leading to the anisotropic surface plasmon resonance of NPs. Although various models, like Coulomb explosion [14], viscoelastic model [15], ion hammering effect [16] and thermal spike model [17], are used as possible mechanisms to explain the change, the exact mechanisms responsible for NC shape transformation still need to be further investigated.…”

Section: Controlling the Size And Distribution Of Nanoparticlesmentioning

confidence: 99%

Engineering embedded metal nanoparticles with ion beam technology

et al. 2009

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“…On the other hand, Giulian et al 9 reported that Pt NPs with a diameter above the threshold value become progressively elongated with increasing fluence, with the length of the smaller axis saturating at approximately this threshold value. Olivier et al 10 investigated the ion-shaping mechanism for embedded Ag NPs. Penninkhof et al 11 investigated the ion-shaping of Au NPs confined within a planar silica matrix under irradiation with 30 MeV Si ions.…”

Section: Introductionmentioning

confidence: 99%

Ion beam shaping of Au nanoparticles in silica: Particle size and concentration dependence

Dawi

Rizza

Mink

et al. 2009

Journal of Applied Physics

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Irradiation with swift heavy ions of spherical Au nanoparticles confined within a silica matrix shapes them into prolate nanorods and nanowires whose principal axes are aligned along the beam direction. In the present paper, we investigate the role that is played by the initial nanoparticle size and concentration in this so-called ion-shaping mechanism. We have produced silica films wherein Au nanoparticles with average diameters of 15, 30, and 45 nm were embedded within a single plane and have irradiated these films at 300 K at normal incidence with 18, 25, and 54 MeV Ag ions. We demonstrate the existence of both threshold and saturation fluences for the elongation effects mentioned. The values of these critical fluences depend both on the ion energy and the initial nanoparticle size. Moreover, we show that 45 nm Au particles are not deformed when irradiated with 18 MeV Ag ions, such that this value corresponds to an energy threshold for the deformation process. As far as the influence of the nanoparticle concentration on the shaping characteristics is concerned, we have found that above the critical irradiation fluence, the deformation effect becomes very sensitive to the initial concentration of the nanoparticles.

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Controlled anisotropic deformation of Ag nanoparticles by Si ion irradiation

Cited by 122 publications

References 23 publications

Ion and electron irradiation-induced effects in nanostructured materials

Ion and electron irradiation-induced effects in nanostructured materials

Engineering embedded metal nanoparticles with ion beam technology

Ion beam shaping of Au nanoparticles in silica: Particle size and concentration dependence

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