Liquid crystal based broadband negative refractive index device with adjustable temperature and production method thereof

A technology of negative refractive index and production method, which is applied in instruments, polarizing elements, optics, etc., can solve the problems of inability to meet the application requirements of negative refractive index materials, and achieve the effect of greatly dynamically adjustable operating frequency.
CN102033342AInactive Publication Date: 2011-04-27陕西泰信电子科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
陕西泰信电子科技股份有限公司
Publication Date
2011-04-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a liquid crystal based broadband negative refractive index device with adjustable temperature, and further discloses a production method of the liquid crystal based broadband negative refractive index device with adjustable temperature, aiming to solve the technical problem than a conventional negative refractive index device has a narrow working frequency band. In the technical scheme of the invention, liquid crystal is injected into a liquid crystal injection cavity formed by copper clad plates and U-shaped press strips, thereby ensuring the complete contact of the liquid crystal and a sheet metal; by utilizing the characteristic that the effective dielectric constant of the crystal liquid is influenced by ambient temperature, the capacitance and working frequency band of the negative refractive index device can be regulated to the largest extent by regulating the ambient temperature, so that the working frequency band of the negative refractive index device can change greatly with temperature. and the largest adjustment extent is up to 6.8%. The negative refractive index device can be used in novel electronic devices such as a flat lens and an invisibility cloak.
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Description

technical field

[0001] The invention relates to a negative refraction index device, in particular to a liquid crystal-based broadband temperature adjustable negative refraction index device, and also relates to a manufacturing method of the broadband temperature adjustable negative refraction index device. Background technique

[0002] Negative refractive index materials exhibit a negative refraction effect that existing materials in nature do not have, and can be applied to the design and preparation of new electronic information components. However, ordinary negative refractive index materials can only work effectively in a certain frequency band, which greatly limits the application of negative refractive index materials.

[0003] refer to Figure 9 , the document "Tunable fishnet metamaterials infiltrated by liquid crystals," AppliedPhysics Letters, 2010, vol.96, p.193103-1-193103-3," discloses a negative refractive index material based on a liquid crystal metal fishnet ...

Claims

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