Graphene-based terahertz metamaterial absorber for broadband applications

被引：21

作者：

Ahmadi, Hanieh ^{[1
]}

Vaezi, Sedigheh ^{[2
]}

Harzand, Vahid Jafarzadeh ^{[3
]}

Safian, Reza ^{[4
]}

机构：

[1] Islamic Azad Univ, South Tehran Branch, Dept Elect Engn, Tehran, Iran

[2] Islamic Azad Univ, Mashhad Branch, Dept Elect Engn, Mashhad, Razavi Khorasan, Iran

[3] Univ Bologna, Dept Elect Elect & Informat Engn, Bologna, Italy

[4] Isfahan Univ Technol, Dept Elect & Comp Engn, Esfahan, Iran

来源：

SOLID STATE COMMUNICATIONS | 2021年 / 323卷

关键词：

Graphene absorber; Terahertz structure; Broadband; Coupled waves; CIRCUIT MODEL; WIDE-BAND; DESIGN; MULTIBAND; SHEET; DISKS;

D O I：

10.1016/j.ssc.2020.114023

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Terahertz (THz) metamaterial absorbers are promised as one of the appropriate candidates for the biosensing and imaging novel devices. In this work, a wideband THz absorber consists of two periodic arrays of graphene ribbons (PAGRs) and one graphene continuous sheet (GCS) in a form of Fabry-Perot resonator is presented. Analytical circuit model of PAGRs and GCS in addition to a developed transmission line theory is exploited to model the proposed structure as RLC circuits. The concept of impedance matching with the aid of circuit principles besides a genetic algorithm (GA) are implemented to reduce the reflected waves from the structure. As a result, a THz absorber with absorption over 98% in the frequency range of 6.45-7.35 THz is achieved. The use of GCS as a coupling element to boost the absorption bandwidth is investigated. The results of this work is in a high demand for the THz sensing and imaging applications and it can be fabricated through chemical vapor deposition (CVD).

引用

页数：7

共 35 条

[1] Design of symmetrical wide-angle graphene-based mid-infrared broadband perfect absorber based on circuit model [J].

Abbasi, Maryam ;

Biabanifard, Mohammad ;

Abrishamian, Mohammad Sadegh .

PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS, 2019, 36

[2] Graphene metamaterials based tunable terahertz absorber: effective surface conductivity approach [J].

Andryieuski, Andrei ;

Lavrinenko, Andrei V. .

OPTICS EXPRESS, 2013, 21 (07) :9144-9155

[3] Polarization Insensitive and Broadband Terahertz Absorber Using Graphene Disks [J].

Arik, Kamalodin ;

AbdollahRamezani, Sajjad ;

Khavasi, Amin .

PLASMONICS, 2017, 12 (02) :393-398

[4] A novel analytical method for designing a multi-band, polarization-insensitive and wide angle graphene-based THz absorber [J].

Arsanjani, Arash ;

Biabanifard, Mohammad ;

Abrishamian, Mohammad Sadegh .

SUPERLATTICES AND MICROSTRUCTURES, 2019, 128 :157-169

[5]

Astorino Maria Denise, 2018, SCI REP, V8, P1

[6]

Biabanifard M, 2018, ENG TECHNOL, V2, P555585

[7] Tunable Terahertz Graphene-Based Absorber Design Method Based on a Circuit Model Approach [J].

Biabanifard, Mohammad ;

Arsanjani, Arash ;

Abrishamian, Mohammad Sadegh ;

Abbott, Derek .

IEEE ACCESS, 2020, 8 :70343-70354

[8] Analytical design of tunable multi-band terahertz absorber composed of graphene disks [J].

Biabanifard, Mohammad ;

Asgari, Somayyeh ;

Biabanifard, Sadegh ;

Abrishamian, Mohammad Sadegh .

OPTIK, 2019, 182 :433-442

[9] Multi-band circuit model of tunable THz absorber based on graphene sheet and ribbons [J].

Biabanifard, Mohammad ;

Abrishamian, Mohammad Sadegh .

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS, 2018, 95 :256-263

[10] Ultra-wideband terahertz graphene absorber using circuit model [J].

Biabanifard, Mohammad ;

Abrishamian, Mohammad Sadegh .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2018, 124 (12)

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