Prakash, J. Tripathi, A. Rigato, V. Pivin, J.C. Tripathi, J. Chae, K.H. Gautam, S. Kumar, P. Asokan, K. Avasthi, D.K. 2024-01-20T17:32:03Z 2024-01-20T17:32:03Z 2021-09-02 2011-03 0022-3727 https://pubs.kist.re.kr/handle/201004/130573 We report on synthesis of spherical Au nanoparticles at the surface and embedded in carbonaceous matrix by 150 keV Ar ion irradiation of thin Au film on polyethyleneterepthlate (PET). The pristine and irradiated samples are characterized by Rutherford backscattering spectrometry (RBS), atomic force microscopy, scanning electron microscopy and transmission electron microscopy (TEM) techniques. RBS spectra reveal the sputtering of Au film and interface mixing, increasing with increasing fluence. Surface morphology shows that at the fluence of 5 × 1015 ions cm-2, dewetting of thin Au film begins and partially connected nanostructures are formed whereas, at the higher fluence of 5 × 1016 ions cm-2, isolated spherical Au nanoparticles (45 ± 20 nm) are formed at the surface. Cross-sectional TEM observations also evidence the Au nanoparticles at the surface and mixed metal-polymer region indicating the formation of nanocomposites with small Au nanoparticles. The results are explained by the crater formation, sputtering followed by dewetting of the thin Au film and interdiffusion at the interface, through molten zones due to thermal spike induced by Ar ions. ？ 2011 IOP Publishing Ltd. English Ar-ion irradiation Au film Au nanoparticle Carbonaceous matrix Crater formation Cross-sectional TEM De-wetting Fluences Inter-diffusion Interface mixing Irradiated samples Mixed-metals Molten zones Rutherford backscattering spectrometry TEM Thermal spikes Argon Atomic force microscopy Ions Irradiation Nanocomposites Nanoparticles Rutherford backscattering spectroscopy Scanning electron microscopy Surface morphology Transmission electron microscopy Gold Synthesis of Au nanoparticles at the surface and embedded in carbonaceous matrix by 150 keV Ar ion irradiation Article 10.1088/0022-3727/44/12/125302 1 Journal of Physics D: Applied Physics, v.44, no.12 Journal of Physics D: Applied Physics 44 12 scie scopus 2-s2.0-79952946259 Article Ar-ion irradiation Au film Au nanoparticle Carbonaceous matrix Crater formation Cross-sectional TEM De-wetting Fluences Inter-diffusion Interface mixing Irradiated samples Mixed-metals Molten zones Rutherford backscattering spectrometry TEM Thermal spikes Argon Atomic force microscopy Ions Irradiation Nanocomposites Nanoparticles Rutherford backscattering spectroscopy Scanning electron microscopy Surface morphology Transmission electron microscopy Gold ion irradiation Au nanoparticle TEM RBS