{"title":"Beamforming of Electrically Tunable Plasmonic Graphene Strip Nanoantennas in the Terahertz, Far-Infrared, and Mid-Infrared Ranges","authors":"G. S. Makeeva","doi":"10.1134/s1063784224700609","DOIUrl":null,"url":null,"abstract":"<p><b>Abstract</b>—The purpose of this work is to study, using automated modeling methods, the possibility of scanning in frequency and beamforming of plasmonic graphene strip nanoantennas, which are electrically tunable by varying the chemical potential of graphene in the terahertz (THz), far-, and mid-infrared (IR) ranges. Graphene, which has exceptional electromagnetic, mechanical, electrical, and thermal properties, is promising for reconfigurable THz antennas due to its high conductivity and tunability in the THz range. Modeling of the performances of THz plasmonic graphene strip nanoantennas for various values of chemical potential was carried out using the CST Microwave Studio 2023 software package. The results of modeling the controllability of the reflection coefficients at the input of the nanoantenna and the radiation pattern (RP) at the resonance frequencies of the fundamental mode of surface plasmon-polaritons (SPPs) and the second-order SPP mode were obtained when changing the values of the chemical potential (0.3–0.7 eV) in the THz, far-, mid-IR ranges. It follows from the modeling results that it is possible to tune operating frequencies (frequency scanning) from THz to the far- and mid-IR ranges and form a multibeam RP of reconfigurable graphene strip nanoantennas by changing the chemical potential of graphene (applying an external electric field) without changing their geometry and dimensions.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Technical Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s1063784224700609","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract—The purpose of this work is to study, using automated modeling methods, the possibility of scanning in frequency and beamforming of plasmonic graphene strip nanoantennas, which are electrically tunable by varying the chemical potential of graphene in the terahertz (THz), far-, and mid-infrared (IR) ranges. Graphene, which has exceptional electromagnetic, mechanical, electrical, and thermal properties, is promising for reconfigurable THz antennas due to its high conductivity and tunability in the THz range. Modeling of the performances of THz plasmonic graphene strip nanoantennas for various values of chemical potential was carried out using the CST Microwave Studio 2023 software package. The results of modeling the controllability of the reflection coefficients at the input of the nanoantenna and the radiation pattern (RP) at the resonance frequencies of the fundamental mode of surface plasmon-polaritons (SPPs) and the second-order SPP mode were obtained when changing the values of the chemical potential (0.3–0.7 eV) in the THz, far-, mid-IR ranges. It follows from the modeling results that it is possible to tune operating frequencies (frequency scanning) from THz to the far- and mid-IR ranges and form a multibeam RP of reconfigurable graphene strip nanoantennas by changing the chemical potential of graphene (applying an external electric field) without changing their geometry and dimensions.
期刊介绍：
Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.
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