The surface plasmon polariton (SPP) modes of gold nanobars (nanowires with rectangular dimensions) have been investigated by scanning pump-probe microscopy. In these experiments the nanobars were suspended over trenches cut in glass coverslips, and propagating SPP modes were launched in the supported portion of the nanobar by focusing a near-IR pump laser beam at the end of the nanobar. Transie...

Subwavelength gratings (SWGs) possess an excellent ability to manipulate the wavefronts of light waves. We investigated beam tailoring mechanism aperiodic SWGs in our current work, and a bifocal lens, splitter, combiner based on transmission-type one-dimensional are presented simulated here. By designing grating nanobar parameters meet predetermined phase shift profile diffraction light, desire...

Due to considerable stored energy in surfaces of nano-scales in comparison with the stored energy in their bulk, considering the surface energy is necessary for the analysis of various behaviors of nano-scales for more precise design and manufacturing. In this article, the longitudinal dynamic behavior of nanobars in the presence of the surface energy parameters is studied. To this end, the lon...

Metallic, especially gold, nanostructures exhibit plasmonic behavior in the visible to near-infrared light range. In this study, we investigate optical enhancement and absorption of gold nanobars with different thicknesses for transverse and longitudinal polarizations using finite element method simulations. This study also reports on the discrepancy in the resonance wavelengths and optical enh...

We propose and numerically investigate a novel perfect ultra-narrow band absorber based on a metal-dielectric-metal-dielectric-metal periodic structure working at near-infrared region, which consists of a dielectric layer sandwiched by a metallic nanobar array and a thin gold film over a dielectric layer supported by a metallic film. The absorption efficiency and ultra-narrow band of the absorb...

We present an approach for rational design and optimization of plasmonic arrays for ultrasensitive surface enhanced infrared absorption (SEIRA) spectroscopy of specific protein analytes. Motivated by our previous work that demonstrated sub-attomole detection of surface-bound silk fibroin [Proc. Natl. Acad. Sci. U.S.A. 106, 19227 (2009)], we introduce here a general framework that allows for the...

As CeO2 is a useful catalyst for soot elimination, it important to develop with higher contact areas, and reactivities efficient oxidation catalytic are basically controlled by structures surface properties of catalysts. Herein, Ce-Metal organic framework (MOFs) consisting Ce benzene-1,3,5-tricarboxylic acid (H3BTC) employed as the precursor CeBTC exhibits unique bar-like high-aspect-ratio morp...

The absorption and scattering efficiencies of light by a single magnetoplasmonic nanoparticle, based on magnetite gold, embedded in human tissue are analyzed theoretically the framework Finite-Difference-Time-Domain method Lorenz-Mie theory. We consider separately three different architectures for nanoparticle: rectangular three-layer gold/magnetite/gold nanobar, circular nanoring magnetite/gol...

Metasurface-mediated bound states in the continuum (BIC) provides a versatile platform for light manipulation at subwavelength dimension with diverging radiative quality factor and extreme optical localization. In this work, we employ magnetic dipole quasi-BIC resonance asymmetric silicon nanobar metasurfaces to realize giant Goos-H\"anchen (GH) shift enhancement by more than three orders of wa...