title: Synthesis of embedded Au nanostructures by ion irradiation: influence of ion induced viscous flow and sputtering.
abstract: The ion-irradiation induced synthesis of embedded Au nanoparticles (NPs) into glass from islands of Au on a glass substrate is studied in the context of recoiling atoms, sputtering and viscous flow. Cross sectional transmission electron microscopy studies revealed the formation of Au NPs embedded in the glass substrates by the 50 keV Si(-) ion irradiation of irregularly shaped Au nanostructures on the glass surfaces at a fluence of 3 × 10(16) ions/cm(2). The depth profiles of Au in the samples were obtained from high-resolution Rutherford backscattering spectrometry studies. The results from TRIDYN simulation reveal the role of various ion-induced processes during the synthesis of the embedded Au NPs, viz. sputtering and recoiling atoms. Simulation and experimental results suggest that the viscous flow is one of the major factors that are responsible for the embedding of Au nanoparticles into the glass substrate.
authors.affiliation: Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
authors.forename: Udai B
authors.initials: UB
authors.lastname: Singh
authors.affiliation: Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
authors.forename: D C
authors.initials: DC
authors.lastname: Agarwal
authors.affiliation: Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
authors.forename: S A
authors.initials: SA
authors.lastname: Khan
authors.affiliation: University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, New Delhi 110078, India.
authors.forename: S
authors.initials: S
authors.lastname: Mohapatra
authors.affiliation: National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Amekura
authors.affiliation: National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan ; Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India.
authors.forename: D P
authors.initials: DP
authors.lastname: Datta
authors.affiliation: Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai, India.
authors.forename: Ajay
authors.initials: A
authors.lastname: Kumar
authors.affiliation: Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai, India.
authors.forename: R K
authors.initials: RK
authors.lastname: Choudhury
authors.affiliation: National University of Singapore, Singapore.
authors.forename: T K
authors.initials: TK
authors.lastname: Chan
authors.affiliation: National University of Singapore, Singapore.
authors.forename: Thomas
authors.initials: T
authors.lastname: Osipowicz
authors.affiliation: Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
authors.forename: D K
authors.initials: DK
authors.lastname: Avasthi
keywords: embedded nanoparticles; ion beam irradiation; recoil implantation