Novel terahertz temperature-controlled adjustable multi-frequency metamaterial absorber
A terahertz and metamaterial technology, applied in the field of new terahertz temperature-controlled multi-frequency metamaterial absorbers, can solve the problems of complex and different metamaterial absorbers, and achieve stable physical properties and not easy to damage. Effect
Inactive Publication Date: 2019-11-12
ZHONGBEI UNIV
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The invention relates to design and preparation of a novel terahertz temperature-controlled adjustable multi-frequency metamaterial absorber. The design idea includes the following steps: according tothe current development status of a temperature-control material, InSb is selected as a metamaterial absorber dielectric substrate, and according to a Drude model, the relative dielectric constant issubjected to approximate calculation and extraction; based on the traditional sandwich absorbing structure design principle, a finite-difference time-domain method is used for modeling and simulationto design a metamaterial metal unit formed by combing polarization-insensitive L-shaped four corners and a middle built-in zigzag structure, and finally, a magnetron sputtering process and a metal stripping process are carried out for sample preparation. The multi-frequency temperature-controlled metamaterial unit design and process preparation is the core technology, and in comparison with the traditional absorbing material, more absorbing frequency bands are achieved, the flexibility is better, and the manufacturing accuracy is higher.
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