Journal ArticleDOI
Modeling of near-infrared SPR sensors based on silver-graphene asymmetric grating and investigation of their capability of gases detection
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TLDR
Two structures of graphene-silver asymmetric grating surface plasmon resonance sensors with high sensitivity were presented in this article, where the sensitivity of both sensors was calculated through the alteration of the wavelength peak of the extinction curve in minor variability of refractive index of the sensing medium.Abstract:
Two structures of graphene-silver asymmetric grating surface plasmon resonance sensors with high sensitivity were presented. In Structure 1, the air, with a thickness of 100 nm, was located on the sensing medium; while, Structure 2 has become small with ignoring the air. The sensitivity of both sensors was calculated through the alteration of the wavelength peak of the extinction curve in minor variability of refractive index of the sensing medium. The sensitivity of Structure 1 and Structure 2 was 880 nm/RIU and 1742 nm/RIU, respectively. By comparing the different sensors, it should be noted that the ability to reach a small-sized sensor with a high performance (Structure 2) is the center of researchers' attention. Also, these two SPR sensors could detect most gases with a refractive index from 1.000 to 1.500 such as CO2, CS2, SO2, and so on, with high precision.read more
Citations
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Journal Article
Gate-Variable Optical Transitions in Graphene
Feng Wang,Yuanbo Zhang,Chuanshan Tian,Caglar Girit,Alex Zettl,Michael F. Crommie,Y. Ron Shen +6 more
TL;DR: The strong and layer-dependent optical transitions of graphene and the tunability by simple electrical gating hold promise for new applications in infrared optics and optoelectronics.
Journal ArticleDOI
Design of a high-performance graphene/SiO2-Ag periodic grating/MoS2 surface plasmon resonance sensor.
TL;DR: In this article , a surface plasmon resonance (SPR) sensor based on SiO2-Ag periodic grating using graphene and a MoS2 hybrid structure was proposed.
References
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Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering
Shuming Nie,Steven R. Emory +1 more
TL;DR: In this article, surface-enhanced Raman scattering was used to detect single molecules and single nanoparticles at room temperature with the use of surface enhanced Raman, and the intrinsic Raman enhancement factors were on the order of 10 14 to 10 15, much larger than the ensemble-averaged values derived from conventional measurements.
Journal ArticleDOI
Plasmonics for improved photovoltaic devices
Harry A. Atwater,Albert Polman +1 more
TL;DR: Recent advances at the intersection of plasmonics and photovoltaics are surveyed and an outlook on the future of solar cells based on these principles is offered.
Book
Plasmonics: Fundamentals and Applications
TL;DR: In this paper, the authors discuss the role of surface plasmon polaritons at metal/insulator interfaces and their application in the propagation of surfaceplasmon waveguides.
Journal ArticleDOI
Graphene photonics and optoelectronics
TL;DR: Graphene has high mobility and optical transparency, in addition to flexibility, robustness and environmental stability as discussed by the authors, and its true potential lies in photonics and optoelectronics, where the combination of its unique optical and electronic properties can be fully exploited, even in the absence of a bandgap, and the linear dispersion of the Dirac electrons enables ultrawideband tunability.