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Method for controlling plasmon wavelength of graphene

A technology of plasmons and graphene, applied in the field of plasmons, can solve the problems of difficult results, time-consuming, in-situ response of plasmons, etc., and achieve the effect of low cost and simple method

Active Publication Date: 2019-05-07
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method of replacing the substrate cannot guarantee the in-situ response of plasmons, the process is complicated and time-consuming, and the final result is not easy to control

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  • Method for controlling plasmon wavelength of graphene
  • Method for controlling plasmon wavelength of graphene
  • Method for controlling plasmon wavelength of graphene

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Embodiment Construction

[0030] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.

[0031] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0032] The present invention is a method for regulating the wavelength of graphene plasmons, the method controls the different distances between the graphene layer and the base layer to regulate the dielectric properties of the base layer induced by the plasmon space electric field, thereby...

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Abstract

The invention discloses a method for controlling the plasmon wavelength of graphene. According to the method, by controlling different distances between a graphene layer and a substrate layer, the mutual coupling strength of the dielectric property of a plasmon electrical field-substrate is controlled, and thus the wavelength of the graphene plasmon is controlled in situ. The method can control the range of the distance between the graphene and the substrate to be from 0 nanometer to hundreds of microns; within the range from several nanometers to hundreds of nanometers, the wavelength of theplasmon can be controlled in situ by using the method of filling the position between the graphene and the substrate with gases; according to the method provided by the invention, the distance is changed continuously, so that the wavelength can be continuously controlled; and the method is simple, easy to implement and low in cost.

Description

technical field [0001] The invention relates to the fields of graphene materials and surface plasmons, in particular to a method for adjusting the wavelength of the graphene by adjusting the distance between the graphene and the substrate. Background technique [0002] Graphene is a carbon atom with SP 2 The hexagonal honeycomb lattice structure formed by hybridization is a two-dimensional material with a single atomic layer. Graphene has a special Dirac line energy band structure, and its carriers are special massless Dirac fermions. Therefore, graphene has excellent electrical, optical and thermal properties. [0003] Graphene plasmons are electromagnetic modes supported on single atomic layer materials such as graphene. It responds in the mid-infrared terahertz band, and the wavelength can be compressed by up to 100 times compared with the wavelength of the incident light, so it is accompanied by a very high field confinement effect. In addition, graphene also has an ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/00
Inventor 戴庆胡海胡德波杨晓霞郭相东
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA