Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene.

Jie Zhou, Xin Sun, Jun Xu, Shiyue Wu, Kaili Jin, Yongjian Tang, Zao Yi, Yougen Yi

Abstract read

In one paragraph

Article in Molecules (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Two-Dimensional Materials: From Synthesis to Applications, 2nd Edition.Molecules (Basel, Switzerland) · 2026
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5 · Who and what money

Authors and funding

8 authors.

Jie ZhouSchool of Electronic Information and Electrical Engineering, Chengdu University, Chengdu 610100, China.

Xin SunCollege of Urban Construction, Zhejiang Shuren University, Hangzhou 310015, China.

Jun XuInstitute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, China.

Shiyue WuInstitute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, China.

Kaili JinInstitute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, China.

Yongjian TangJoint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.

Zao YiJoint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.ORCID 0000-0002-7019-7481

Yougen YiCollege of Physics, Central South University, Changsha 410083, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We employed the CST Microwave Studio software 2020 and the FDID algorithm for simulation. We have designed a terahertz broadband absorber based on Dirac semimetals and graphene, achieving continuous broadband absorption with a rate exceeding 80% over the range from 7.6776 to 9.172 THz. This broadband absorber features two independent tuning modes, utilizing graphene and Dirac semimetals, and exhibits strong electromagnetic adaptability. Furthermore, we conducted an in-depth analysis of the physical mechanisms underlying the high absorption in these absorbers using impedance matching theory and localized surface plasmon resonance (LSPR) theory. Variations in the dielectric constants of different dielectric layers and the relaxation time of graphene can also modulate the absorption rate. In summary, our proposed terahertz broadband absorber, employing two distinct tunable materials, enhances the device's flexibility and environmental adaptability, offering promising prospects for wideband absorption applications.

Indexed as

absorberDirac semimetalgraphenemetamaterialterahertzwideband absorption

Identifiers

PMID40076224

DOI10.3390/molecules30050999

PMCPMC11902116

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