Switching between perfect absorption and polarization conversion, based on hybrid metamaterial in the GHz and THz bands

被引：18

作者：

Duong Thi Ha ^{[1
,3
]}

Dinh Ngoc Dzung ^{[1
,4
]}

Nguyen Van Ngoc ^{[1
]}

Bui Son Tung ^{[1
,2
]}

Thanh Son Pham ^{[2
]}

Lee, YoungPak ^{[5
,6
,7
]}

Chen, Liang Yao ^{[7
]}

Bui Xuan Khuyen ^{[1
,2
]}

Vu Dinh Lam ^{[1
,2
]}

机构：

[1] VAST, Grad Univ Sci & Technol GUST, 18 Hoang Quoc Viet, Hanoi, Vietnam

[2] VAST, Inst Mat Sci, 18 Hoang Quoc Viet, Hanoi, Vietnam

[3] Thai Nguyen Univ Educ, Dept Phys, Thai Nguyen, Vietnam

[4] Phenikaa Univ, Fac Mat Sci & Engn, Hanoi 12116, Vietnam

[5] Hanyang Univ, Quantum Photon Sci Res Ctr, Dept Phys, Seoul 04763, South Korea

[6] Hanyang Univ, RINS, Seoul 04763, South Korea

[7] Fudan Univ, Opt Sci & Engn, Shanghai 200433, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2021年 / 54卷 / 23期

关键词：

metamaterials; perfect absorber; polarization converter; lumped varactor diode;

D O I：

10.1088/1361-6463/abeb97

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a multifunctional metamaterial (MM) structure which can behave like a perfect absorber (PA) or polarization converter (PC) by controlling the lumped varactor. In PC mode, the MM revealed cross-polarization conversion in a frequency range from 2.0 to 7.0 GHz with a polarization-conversion ratio of nearly 100%. While in the PA state, triple-band high absorption was achieved. In addition, we investigated numerically the PA and PC modes by scaling down the geometrical dimension and orientation of the proposed unit cells, for further development of innovative methods in the THz range. Our work is expected to contribute to the realization of future multifunctional MM-based devices working in the GHz or higher-frequency range.

引用

页数：10

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