Energy dependent saturation width of swift heavy ion shaped embedded Au nanoparticles
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Kluth, P.
Giulian, R.
Sprouster, D. J.
Schnohr, C. S.
Byrne, A. P.
Cookson, D. J.
Ridgway, M. C.
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American Institute of Physics (AIP)
Abstract
The transformation of Aunanoparticles (NPs) embedded in SiO₂ from spherical to rod-like shapes induced by swift heavy ion irradiation has been studied. Irradiation was performed with ¹⁹⁷Au ions at energies between 54 and 185 MeV. Transmission electron microscopy and small angle x-ray scatteringmeasurements reveal an energy dependent saturation width of the NP rods as well as a minimum size required for the NPs to elongate. The NP saturation width is correlated with the ion track diameter in the SiO₂. NP melting and in-plane strain in the irradiatedSiO₂ are discussed as potential mechanisms for the observed deformation.
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Applied Physics Letters
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