A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

  title={A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays},
  author={Chunlian Cen and Hang Lin and Jing Huang and Cuiping Liang and Xifang Chen and Yongjian Tang and Zao Yi and Xin Ye and Jiangwei Liu and Yougen Yi and Shuyuan Xiao},
  journal={Sensors (Basel, Switzerland)},
In the present study, we design a tunable plasmonic refractive index sensor with nanoring-strip graphene arrays. The calculations prove that the nanoring-strip have two transmission dips. By changing the strip length L of the present structure, we find that the nanoring-strip graphene arrays have a wide range of resonances (resonance wavelength increases from 17.73 μm to 28.15 μm). When changing the sensing medium refractive index nmed, the sensitivity of mode A and B can reach 2.97 μm/RIU and… Expand
High sensitivity and tunable graphene arrays dual-band plasmonic sensor based on surface plasmons
Abstract In this paper, we demonstrated a high sensitivity and tunable graphene arrays dual-band plasmonic sensor based on surface plasmons. Through simulation, we obtained the initial split-ringExpand
Wide range refractive index sensor based on a coupled structure of Au nanocubes and Au film
We report a plasmonic refractive index sensor with a wide measurement range based on periodic gold nanocubes coupled with a gold film. The theoretical sensing range is 1.0–1.8. The structure consistsExpand
Nanoribbon-ring cross perfect metamaterial graphene multi-band absorber in THz range and the sensing application
Abstract In this paper, we propose a graphene nanoribbon-ring cross structure. A multi-band absorber is obtained by a simple combination of graphene nanoribbons and and graphene ring. We obtain thatExpand
Enhanced extraordinary optical transmission and refractive-index sensing sensitivity in tapered plasmonic nanohole arrays.
It is shown that tapered nanohole arrays can effectively suppress the excitation of multiple resonance peaks, and a single EOT peak emerges in the transmission spectrum and simultaneously exhibits significantly enhanced transmission and narrow linewidth. Expand
Enhancing sensitivity to ambient refractive index with tunable few-layer graphene/hBN nanoribbons
Refractive index (RI) sensing helps to identify biomolecules and chemicals in the mid-infrared range for drug discovery, bioengineering, and environmental monitoring. In this paper, we numericallyExpand
Tunable Graphene-based Plasmonic Perfect Metamaterial Absorber in the THz Region
The optical performance of a periodically tunable plasma perfect metamaterial absorber based on a square-square-circle array that is beneficial to sensors and detectors in the terahertz region is analyzed by the finite difference time domain (FDTD) method. Expand
Highly sensitive refractive index sensing by epsilon near zero metamaterials
Abstract We designed a highly sensitive refractive index sensor (RIS) with a simple and compact structure. In this regard, a metal-dielectric-metal (MDM) nanostructured thin film was considered toExpand
A theoretical study of a plasmonic sensor comprising a gold nano-disk array on gold film with a SiO 2 spacer
A plasmonic refractive index (RI) sensor with high RI sensitivity based on a gold composite structure is proposed. This composite structure is constructed from a perfect gold nano-disk square arrayExpand
Multi-band plasmonic absorber based on hybrid metal-graphene metasurface for refractive index sensing application
Abstract A multi-band absorber based on a hybrid metal-graphene metasurface, which is also suitable for detecting surrounding refractive index, is proposed and studied by numerical simulation. TheExpand
Tunable absorption enhancement in periodic elliptical hollow graphene arrays
In this contribution, a tunable plasmonic absorber consisting of periodical elliptical hollow graphene arrays deposited on SiO2 substrate is proposed in the far infrared and terahertz (THz). TheExpand


Isotropic spiral plasmonic metamaterial for sensing large refractive index change.
The numerical investigation of the optical properties of a spiral G-shaped metamaterial shows single wavelength sensing ability, which allows fast determination of environmental refractive index changes as large as 0.5 by simply monitoring variations in the transmitted intensity of a certain wavelength. Expand
Tunable plasmonic resonance absorption characteries-tics in periodic H-shaped graphene arrays
Abstract In recent years, as an important plasmonic nanomaterial, graphene has become the focus of research. In our research, we design a tunable plasmonic absorber composed of periodic H-shapedExpand
Tunable triple-band graphene refractive index sensor with good angle-polarization tolerance
Abstract In this article, we design a triple-band graphene refractive index sensor with good angle-polarization tolerance, which is composed of graphene elliptic–circular nanodisk resonatorsExpand
Sensitive refractive index sensing with tunable sensing range and good operation angle-polarization-tolerance using graphene concentric ring arrays
A highly tunable refractive index sensor with excellent performance and good operation angle-polarization-tolerance is proposed and demonstrated numerically by means of the finite element method. TheExpand
Extraordinary Optical Transmission in Metallic Nanostructures with a Plasmonic Nanohole Array of Two Connected Slot Antennas
A novel subwavelength transparent metal structure consisting of a periodic connected slot antennas nanohole array in a gold film is proposed in this work. The transmission characteristics of theExpand
Photocurrent in graphene harnessed by tunable intrinsic plasmons.
Graphene's optical properties in the infrared and terahertz can be tailored and enhanced by patterning graphene into periodic metamaterials with sub-wavelength feature sizes by providing a path to light-sensitive and frequency-selective photodetectors based on graphene's plasmonic excitations. Expand
A Novel Nanometeric Plasmonic Refractive Index Sensor
A novel surface plasmon-polariton (SPP) refractive index sensor based on the coupling of a split waveguide mode with a cavity mode in the metal is proposed and studied in this paper. Both analyticExpand
Plasmonic absorption characteristics based on dumbbell-shaped graphene metamaterial arrays
Abstract In this paper, we proposed a theoretical model in the far-infrared and terahertz (THz) bands, which are dumbbell-shaped graphene metamaterial arrays with a combination of graphene nanobeltExpand
Plasmonic Absorption Enhancement in Elliptical Graphene Arrays
A wavelength tunable absorber made up of periodically elliptical graphene arrays in the far-infrared and terahertz regions is come up, and the changes in the absorption rate of the double layer structure of the elliptical array with the increase in the thickness of SiO2 are studied. Expand
Infrared biosensors based on graphene plasmonics: modeling.
Numerical simulations demonstrate that the sensitivity of a biosensor by exploiting localized plasmons in graphene and biomolecule adsorption on it can achieve a high value when the wavelength shift at the plasmon resonance is detected. Expand