The Enhancement in Optical Characteristics of Nano-Antenna Arrays through Addition of Inverse Active Core–Shell Nanoparticles in the Array Element

We demonstrate analytically the technique and arrangement of nanoparticle antenna arrays with enhancement optical characteristics at an frequency regime. The array are enhanced by introducing inverse active spherical coated (I-CNP). This is designed combined already demonstrated CNPs. Consequently, three types CNPs their inverse-based plasmonic nano-antenna configurations have been studied: two CNP configurations, (I-CNP) a I-CNP configuration in presence passive elements. Detailed near-field analysis contains E-field, radiated power, scattering absorption examination, whereas far-field includes gain pattern investigation. finite-difference time-domain (FDTD) simulation results CST depict benefits elements over other terms both characteristics, closer inter-element distances because coupling avoidance possession dipolar pattern.