Synthesis of silver nanorings by atom beam sputtering
by Satyabrata Mohapatra, Yogendra Kumar Mishra, Ambuj Tripathi, Debdulal Kabiraj, Devesh Kumar Avasthi
International Journal of Nanomanufacturing (IJNM), Vol. 7, No. 1, 2011

Abstract: Silver nanorings, evident by transmission electron microscopy and atomic force microscopy, were synthesised through self-assembly of Ag nanoparticles embedded in silica by atom beam co-sputtering. Optical absorption studies revealed localised surface plasmon resonance (LSPR) at ∼430 nm, which is in close agreement with our theoretical calculations. The dimensions of nanorings were found to be substrate dependent, which indicates that the diffusivity of Ag plays an important role in the self-assembly process. The Ag nanorings formation has been explained in terms of stress evolution in aggregates of Ag nanoparticles at surface, due to irradiation with energetic sputtered atoms.

Online publication date: Sat, 28-Feb-2015

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