Graphene: A Dynamic Platform for Electrical Control of Plasmonic Resonance

Emani, Naresh K.; Kildishev, Alexander V.; Shalaev, Vladimir M.; Boltasseva, Alexandra

doi:10.1515/nanoph-2015-0014

Cited by 74 publications

(48 citation statements)

References 72 publications

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“…Note here we have taken the approximation ħ ω ≫ k B T and E F ≫ k B T 39, which is valid through our following discussion, in order to get the form of the second term in Eq. 1.…”

Section: Resultsmentioning

confidence: 99%

A graphene-based Fabry-Pérot spectrometer in mid-infrared region

Wang

Chen

Pan

et al. 2016

Sci Rep

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Mid-infrared spectroscopy is of great importance in many areas and its integration with thin-film technology can economically enrich the functionalities of many existing devices. In this paper we propose a graphene-based ultra-compact spectrometer (several micrometers in size) that is compatible with complementary metal-oxide-semiconductor (CMOS) processing. The proposed structure uses a monolayer graphene as a mid-infrared surface waveguide, whose optical response is spatially modulated using electric fields to form a Fabry-Pérot cavity. By varying the voltage acting on the cavity, we can control the transmitted wavelength of the spectrometer at room temperature. This design has potential applications in the graphene-silicon-based optoelectronic devices as it offers new possibilities for developing new ultra-compact spectrometers and low-cost hyperspectral imaging sensors in mid-infrared region.

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“…Note here we have taken the approximation ħ ω ≫ k B T and E F ≫ k B T 39, which is valid through our following discussion, in order to get the form of the second term in Eq. 1.…”

Section: Resultsmentioning

confidence: 99%

A graphene-based Fabry-Pérot spectrometer in mid-infrared region

Wang

Chen

Pan

et al. 2016

Sci Rep

View full text Add to dashboard Cite

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“…In this sense, the excellent mechanical properties and the tunable carrier density of graphene make it an excellent material to enable active metasurfaces [184].…”

Section: Graphene Hybrid Metasurfacesmentioning

confidence: 99%

A review of metasurfaces: physics and applications

2016

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Abstract. Metamaterials are composed of periodic subwavelength metal/dielectric structures that resonantly couple to the electric and/or magnetic components of the incident electromagnetic fields, exhibiting properties that not found in nature. This class of micro-and nano-structured artificial media have attracted great interest during the past 15 years and yielded ground-breaking electromagnetic and photonic phenomena. However, the high losses and strong dispersion associated with the resonant responses and the use of metallic structures, as well as the difficulty in fabricating the micro-and nanoscale 3D structures, have hindered practical applications of metamaterials. Planar metamaterials with subwavelength thickness, or metasurfaces, consisting of single-layer or few-layer stacks of planar structures can be readily fabricated using lithography and nanoprinting methods, and the ultrathin thickness in the wave propagation direction can greatly suppress the undesirable losses. Metasurfaces enable a spatially varying optical response (e.g., scattering amplitude, phase, and polarization), mold optical wavefronts into shapes that can be designed at will, and facilitate the integration of functional materials to accomplish active control and greatly enhanced nonlinear response. This paper reviews recent progress in the physics of metasurfaces operating at wavelengths ranging from microwave to visible. We provide an overview of key metasurface concepts such as anomalous reflection and refraction, and introduce metasurfaces based on the PancharatnamBerry phase and Huygens' metasurfaces, as well as their use in wavefront shaping and beam forming applications, followed by a discussion of polarization conversion in fewlayer metasurfaces and their related properties. An overview of dielectric metasurfaces reveals their ability to realize unique functionalities coupled with Mie resonances and their low ohmic losses. We also describe metasurfaces for wave guidance and radiation control, as well as active and nonlinear metasurfaces. Finally, we conclude by providing our opinions of future developments in this rapidly developing research field.

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“…The diffraction anomaly of the metal grating was found in the experiment and a new diffraction peak was observed in the normal diffraction angle distribution spectrum [1]. The peak of the diffraction spectrum is actually the result of the coupling between the diffraction pattern and the surface plasma of the metal surface [2]. When the high-energy electrons pass through the metal thin film, there is energy loss not only at the plasma frequency but also at the lower frequency, which is also related to the energy loss of the metal film [3], which is considered to be surface plasma resonance near the two interfaces.…”

Section: Introductionmentioning

confidence: 84%