DAST-based adjustable metamaterial, preparation method and application thereof

A metamaterial and adjustable technology, applied in the field of metamaterials, can solve problems such as the inability to realize the adjustable function of metamaterials, and achieve the effect of realizing adjustable functions, reducing absorption loss, and wide adjustment range
CN111142175APending Publication Date: 2020-05-12UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2020-05-12

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Abstract

The invention discloses a DAST-based adjustable metamaterial, a preparation method and an application thereof. The adjustable metamaterial comprises a lower conductive layer, a resonator array layer,a dielectric layer complementary with the resonator array layer and an upper conductive layer, wherein the resonator array layer is made of a DAST organic single crystal or a DAST organic thin film. By changing the size of the array structure, high reflection of visible light and infrared light is realized; moreover, the reflection spectrum response characteristic of the metamaterial can be adjusted through the voltage; when the applied voltage is a negative value, the response wavelength is subjected to blue shift; and when the applied voltage is a positive value, the response wavelength is subjected to red shift. Whether positive voltage or negative voltage is applied, the moving range of the reflection spectrum is enlarged along with the increase of the absolute value of the voltage.
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Description

technical field

[0001] The invention relates to the field of metamaterials, in particular to a DAST-based adjustable metamaterial, a preparation method and an application thereof. Background technique

[0002] Metamaterial is a kind of artificial composite structural material with extraordinary physical properties that natural materials do not have. It changes the permittivity and magnetic permeability of each point in space through artificial microstructures arranged periodically, so that the metamaterial in the Within a certain frequency range, it has negative permittivity and negative magnetic permeability that ordinary materials do not have. Metamaterials can break through the limitations of conventional materials and form a series of novel physical properties, such as negative refractive index, secondary convergence, reverse Doppler effect, etc., which make metamaterials have great potential in wave absorbers, perfect lenses, stealth, etc. (see Zheludev, N.I.Science, 2...

Claims

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