Two-dimensional metamaterial functional device based on graphene

A functional device, graphene technology, applied in instruments, nonlinear optics, optics, etc., can solve problems such as low conversion efficiency, difficult to realize drive circuit design, limit the application space of graphene metamaterials, etc., and achieve high conversion efficiency Effect

Active Publication Date: 2017-05-24
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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Problems solved by technology

[0005] However, the graphene metamaterials reported in the previous literature can only realize one-dimensional electromagnetic property control, and each graphene strip needs an independent bias voltage to modulate its scattering phase, and the design of its driving circuit is difficult to r

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  • Two-dimensional metamaterial functional device based on graphene
  • Two-dimensional metamaterial functional device based on graphene
  • Two-dimensional metamaterial functional device based on graphene

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Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, the embodiments are provided to explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to particular intended uses.

[0032] figure 1 is a schematic structural view of the basic unit of the graphene two-dimensional metamaterial according to an embodiment of the present invention.

[0033] refer to figure 1 , the graphene two-dimensional metamaterial basic unit according to an embodiment of the present invention includes: a reflective layer 120 , a dielectric layer 130 and a graphene scattering unit 140 sequentially disposed on a substrate ...

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Abstract

The invention discloses a two-dimensional metamaterial functional device based on grapheme, which comprises a reflected layer on the substrate in sequence order, a dielectric layer and a grapheme micro-nano structure layer, wherein, the grapheme micro-nano structure layer comprises a plurality of configurated grapheme assembly units, each the grapheme assembly unit comprises a plurality of grapheme scattering units, the structure of a a plurality of grapheme scattering units are same from each other. The technical scheme realizes different functional device. In the functional devices, by using a single electrode the Fermi energy levels of the graphene scattering unit is modulated uniformly, the resonant frequency of the graphene scattering unit is controlled, combining with the high mobility characteristics of graphene, the dynamic regulation of incoming light transmission is achieved. In addition, high conversion efficiency can be obtained because of the strong reflectivity light of PB phase shift in the graphene two-dimensional supermaterials.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to a functional device based on graphene two-dimensional metamaterial. Background technique [0002] Two-dimensional metamaterials, also known as metasurfaces, are functional devices formed by the arrangement of discrete scatterers with different scattering phases according to certain rules. The design concept of this novel functional device was first proposed by Yu Nanfang et al. on page 333, volume 334 of Science. [0003] By setting the spatial distribution rules of the phase mutation of the scatterers in the layer, the metasurface can not only realize the traditional functions such as anomalous reflection / transmission interface, converging / diverging lens, holographic imaging and optical rotation, but also produce anomalous photon spin Hall effect, etc. Novel optical phenomena, which cannot be realized by traditional optical devices. However, most two-dimens...

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Application Information

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IPC IPC(8): G02F1/00G02F1/01
CPCG02F1/0009G02F1/0102G02F2203/05G02F2203/13G02F2203/50
Inventor 胡鑫陈沁曾中明
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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