The synthesis, morphological characterization, and optical properties of colloidal, Eu(III) doped Gd2O3 nanoparticles with different sizes and shapes are presented. Utilizing wet chemical techniques and various synthesis routes, we were able to obtain spherical, nanodisk, nanotripod, and nanotriangle-like morphology of Gd2O3:Eu3+ nanoparticles. Various concentrations of Eu3+ ions in the crystal...

This work presents a computational approach for investigating terahertz photoconductive antennas with enhanced performance via thin-film plasmonic electrode configurations. The commercially available finite element method solver COMSOL Multiphysics is implemented to solve Maxwell’s wave equations along with the coupled drift-diffusion/Poisson’s equations. The proposed approach is compared with ...

Abstract A meron is a classical topological soliton having half charge. It could be materialized in magnetic disk. However, it will become quantum mechanical object when its size of the order nanometers. Here, we propose to use nanoscale nanodisk as qubit, where up and down directions core spin are assigned qubit states $$\left\vert 0\right\rangle$$ <mml:math xmlns:mml="http://www.w3.org/1998/M...

Plasmonic nanohole arrays (NHA) can serve as an efficient alternative for ultrathin color filters due to their high tunability, robust stability, and simple nanofabrication. However, the periodic nanostructures inherently exhibit multiple resonances in visible near-infrared ranges. Here large-area single-resonance plasmonic spectral filter RGB-NIR imaging using nanoimprinted complementary struc...

Vibrational strong coupling of molecules to optical cavities based on plasmonic resonances has been explored recently, because near-fields can provide in sub-diffraction limited volumes. Such field localization maximizes strength, which is crucial for modifying the vibrational response and, thereby, manipulating chemical reactions. Here, we demonstrate an angle-independent nanodisk substrate th...

Due to their attractive properties, silver nanowires (Ag-NWs) are newly used as nanoelectrodes in continuous wave (CW) THz photomixer. However, since these have small contact area, the fill factor photomixer active region is low, which leads reduce conductivity. In this work, we proposed add graphene nanoantenna array nanowires-based improve addition, and form new hybrid for CW-THz leading devi...

Interference of optically induced electric and magnetic modes in high-index all-dielectric nanoparticles offers unique opportunities for tailoring directional scattering and engineering the flow of light. In this article we demonstrate theoretically and experimentally that the interference of electric and magnetic optically induced modes in individual subwavelength silicon nanodisks can lead to...