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A kind of three-dimensional metamaterial and its preparation method and application

A three-dimensional and consistent technology, applied in optical components, instruments, optics, etc., can solve the problems of limited flexibility and less codeable degrees of freedom, and achieve the effect of improving degrees of freedom, flexible design, and strong scalability

Active Publication Date: 2019-06-04
NANJING UNIV
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  • Claims
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Problems solved by technology

In the past, the binary display and encoding materials designed by using artificial microstructures and metamaterials were all realized based on two-dimensional structured metasurfaces, but the degree of flexibility was limited due to the lack of encoding degrees of freedom.

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  • A kind of three-dimensional metamaterial and its preparation method and application
  • A kind of three-dimensional metamaterial and its preparation method and application
  • A kind of three-dimensional metamaterial and its preparation method and application

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Embodiment Construction

[0034] A three-dimensional metamaterial is disclosed in the embodiment, which has a plurality of periodically distributed U-shaped structures; based on the three-dimensional coordinate system (X, Y, Z) in space, the U-shaped structure consists of two arms in the same direction as the Z axis It is composed of a bottom connecting two arms. The two arms are in the same direction as the Z axis and the arms of the adjacent U-shaped structure are independent of each other. The angle between the bottom and the X axis is θ, 0°≤θ≤90°; each The U-shaped structure corresponds to a pixel in the image, and all the U-shaped structures together form the desired image.

[0035] Such as figure 1 (a) In the shown embodiment, the period p of the U-shaped structure is 4 microns, the height d of the bottom of the U-shaped structure is 0.7 microns, the length L of the bottom is 2 microns, and the line width m of the bottom of the U-shaped structure is 0.3 Micron; the angle between the bottom of th...

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Abstract

The invention discloses a three-dimensional metamaterial which is provided with a plurality of periodically-distributed U-shaped structures. Each U-shaped structure corresponds to one pixel point in an image, and all the U-shaped structures jointly form the needed image; each U-shaped structure is composed of two arms and a bottom connected with the two arms, the two arms and the Z axis are in the same direction, the arms of the adjacent U-shaped structures are independent from each other and do not make contact with each other, and the included angle formed between the bottom and the X axis is theta, and theta is larger than or equal to 0 and smaller than or equal to 90 degrees. The invention further discloses a preparation method of the three-dimensional metamaterial, a gray level encoding and display method based on the three-dimensional metamaterial and a binary encoding and display method. By designing the specific metal structure unit, extra freedom degree electromagnetic wave regulation physical properties are introduced, the metamaterial can selectively absorb electromagnetic waves of different frequencies, electromagnetic waves of different polarization states can be absorbed completely or absorbed partially or totally reflected, and therefore the important role is achieved in encoding and imaging technologies.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic information functional devices and new energy materials, and in particular relates to a three-dimensional metamaterial based on a U-shaped structure that can be used for grayscale coding and display and binary coding and display. Background technique [0002] Binary display and coding have important applications in communication and computing. In the past, the binary display and encoding materials designed by using artificial microstructures and metamaterials were all realized based on two-dimensional structured metasurfaces, but the degree of flexibility was limited due to the lack of encoding degrees of freedom. Contents of the invention [0003] In order to solve the above problems, the present invention discloses a new three-dimensional metamaterial based on a U-shaped structure. Compared with the traditional metasurface, by designing specific metal structural units and introducing ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00
CPCG02B1/002
Inventor 王牧彭茹雯熊翔王政翰高雅君郝西萍
Owner NANJING UNIV
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