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Synthetic method of terahertz wave material in terahertz frequency range

A synthesis method and terahertz technology, applied in the field of terahertz materials, can solve the problems of low detection efficiency and achieve the effects of low energy loss, small product size and easy operation

Active Publication Date: 2013-06-26
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its detection efficiency is low, and it needs a high-intensity terahertz wave to respond

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The precursor is obtained by mixing metal salts containing magnesium (C2) and silicon (C4) and manganese carbonate (B1) with an equal mass of absolute ethanol and water according to the mass ratio C2 / C4 / B1=0.629 / 0.364 / 0.007; Then carry out drying, pre-calcination, crushing, granulation and molding processing, high-temperature heat treatment (1200 ° C for 1 h), and then combine with proper fine-tuning of the terahertz performance to obtain a terahertz block material for the terahertz frequency band. The sample is in 0.2 ~ 10THz frequency measured permittivity is 4, absorption coefficient is 0.008cm -1 , The dielectric loss is 0.0009.

Embodiment 2

[0027] The magnesium (C2) and silicon (C4) metal salts and manganese carbonate (B1), according to the mass ratio C2 / C4 / B1=0.629 / 0.364 / 0.007, are mixed with the same mass of ammonia water to obtain the precursor; then drying, Processing such as pre-calcination, crushing, granulation and molding, high-temperature heat treatment (1400°C heat preservation for 1h), combined with proper fine-tuning of the terahertz performance, obtained terahertz block materials for terahertz frequency bands, and the samples were tested at a frequency of 0.2-10THz The permittivity is 5 and the absorption coefficient is 0.007cm -1 , The dielectric loss is 0.0008.

Embodiment 3

[0029] Mix magnesium (C2) and silicon (C4) metal salts and manganese carbonate (B1), according to the mass ratio C2 / C4 / B1=0.629 / 0.364 / 0.007, with equal mass of oxalic acid and water to obtain the precursor; then bake Drying, pre-calcination, crushing, granulation, molding and other processing, high temperature heat treatment (1300°C for 1h), combined with proper fine-tuning of the terahertz performance, to obtain terahertz block materials used in the terahertz frequency band, the sample is 0.2 ~ 10THz Frequency measured permittivity is 5, absorption coefficient is 0.003cm -1 , The dielectric loss is 0.0005.

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Abstract

The invention discloses a synthetic method of a terahertz wave material in a terahertz frequency range, and relates to terahertz wave materials in a terahertz frequency range. The synthetic method has the advantages of easiness in operation, small product volume, low energy loss and the like. The method comprises the following steps of: 1) performing a chemical reaction of at least one of metal salts of lithium, magnesium, zinc, silicon, lanthanum, aluminum, titanium, cerium and the like and a first solvent to obtain a precursor; 2) mixing and grinding the precursor obtained in the step 1) with manganese carbonate, barium carbonate, barium carbonate and a second solvent, then, drying, pre-burning, crushing and prilling, forming and thermally treating to obtain the terahertz wave block material in the terahertz frequency range; and 3) crushing and screening the terahertz wave block material in the terahertz frequency range obtained in the step 2) to obtain microparticles, then, adding polytetrafluoroethylene or resin, and thermally treating to obtain the terahertz wave material in the terahertz frequency range.

Description

technical field [0001] The invention relates to a terahertz frequency band terrestrial material, in particular to a synthesis method of a terahertz frequency band terrestrial material. Background technique [0002] Terahertz waves generally refer to electromagnetic radiation with a frequency in the range of 100GHz to 100THz, and its waveband is between microwave and infrared light, which is a basically unused waveband. Terahertz waves are in a special position in the electromagnetic spectrum and have a variety of special properties: Terahertz wave radiation has good penetration for many dielectric materials and non-polar liquids, so terahertz waves can see through opaque objects Imaging; the photon energy of the terahertz wave is very low, and it will not cause harmful ionization damage to biological tissue cells during radiation detection; the terahertz wave band contains rich and unique spectral information; the frequency of the terahertz wave is high, and as a communicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L63/00C08L83/04C08K3/00C08K3/34C08K3/26C09K3/00
Inventor 熊兆贤黄金保张国锋郑强薛昊
Owner XIAMEN UNIV