Moghaddama, S. T.Ertürk, H.Mengüç, Mustafa Pınar2016-07-292016-07-292016-070022-4073http://hdl.handle.net/10679/4333https://doi.org/10.1016/j.jqsrt.2016.02.011This study considers enhancing localized absorption by a gold nanoparticle (NP) placed over a substrate where an atomic force microscope (AFM) tip is in close proximity of the particle. The gold NP and AFM tip are interacting with a surface evanescent wave, resulting a near-field coupling between the tip and NP and consequently enhances the absorption. This concept can be used for selective heating of NPs placed over a surface that enables precise manufacturing at nanometer scales. Different tip positions are considered to identify the optimal tip location and the corresponding enhancement limits. The effects of these interactions on the absorption profiles of dielectric core/gold shell NPs are also studied. It is observed that using core–shell nanoparticles with a dielectric core leads to further enhancement of the absorption efficiency and a more uniform distribution of absorption over the shell. Discrete dipole approximation coupled with surface interactions (DDA-SI) is employed throughout the study, and it is vectorized to improve its computational efficiency.enginfo:eu-repo/semantics/restrictedAccessArticle17812413300037670590001210.1016/j.jqsrt.2016.02.011Plasmonic heatingDiscrete dipole approximation with surface interactionsEvanescent wavesNear field radiation transferCore–shell nano-particle2-s2.0-84959524828