Plasmonic Sensor Based on Dielectric Nanoprisms
نویسندگان
چکیده
A periodic array of extruded nanoprisms is proposed to generate surface plasmon resonances for sensing applications. Nanoprisms guide and funnel light towards the metal-dielectric interface where the dielectric acts as the medium under test. The system works under normal incidence conditions and is spectrally interrogated. The performance is better than the classical Kretschmann configurations, and the values of sensitivity and figure of merit are competitive with other plasmonic sensor technologies. The geometry and the choice of materials have been made taking into account applicable fabrication constraints.
منابع مشابه
Numerical Modeling of a Nanostructure Gas Sensor Based on Plasmonic Effect
In the present paper, a nanostructure plasmonic gas sensor based on ringresonator structure at the wavelength range of 0.6-0.9 μm is presented. The plasmonicmaterials/SiO2 with the advantage of high mobility and low loss is utilized as a substratefor structure to obtain some appropriate characteristics for the sensing Performanceparameters. To evaluate the proposed senso...
متن کاملPlasmonic components fabrication via nanoimprint
A review report on nanoimprinted plasmonic components is given. The fabrication of different metal–dielectric geometries and nanostructured surfaces that support either propagating or localized surface plasmon modes is discussed. The main characteristics and advantages of the nanoimprint technology for the fabrication of various plasmonic structures are outlined. The discussion of plasmonic wav...
متن کاملSurface plasmon sensor with gold film deposited on a two-dimensional colloidal crystal
A sensor based on surface plasmon resonance (SPR) of plasmonic crystals fabricated via a colloidal-crystalassisted templating method is studied. Plasmonic crystals are prepared by depositing a thin gold (Au) layer onto a twodimensional array of polystyrene spheres self-assembled on a quartz substrate. The enhanced transmission as a result of the SPR of Au plasmonic crystals, which are immersed ...
متن کاملSol-Gel Thin Films for Plasmonic Gas Sensors
Plasmonic gas sensors are optical sensors that use localized surface plasmons or extended surface plasmons as transducing platform. Surface plasmons are very sensitive to dielectric variations of the environment or to electron exchange, and these effects have been exploited for the realization of sensitive gas sensors. In this paper, we review our research work of the last few years on the synt...
متن کاملInfrared Perfect Ultra-narrow Band Absorber as Plasmonic Sensor
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...
متن کامل