Stable Fano-like plasmonic resonance: its impact on the reversal of far- and near-field optical binding force

Hamim Mahmud Rivy,M R C Mahdy,Nabila Masud,Ziaur Rahman Jony,Saikat Chandra Das

Figure 5. The extinction spectra curve when the Mie-range distinctly shaped nanoparticle tetramers are half immersed in an inhomogeneous dielectric background for different interparticle distances ($d={d}_{x}={d}_{y}=\,800,500,300,180\,{\rm{nm}}$). (a)–(d) The extinction spectra curves of cube-, cylinder-, sphere and ring-shaped nanoparticle tetramers, respectively, for the underneath background medium of refractive index = 1.87.