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Feinstein MD, Almeida E. Hybridization of graphene-gold plasmons for active control of mid-infrared radiation. Sci Rep 2024; 14:6733. [PMID: 38509246 PMCID: PMC10954650 DOI: 10.1038/s41598-024-57216-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 03/15/2024] [Indexed: 03/22/2024] Open
Abstract
Many applications in environmental and biological sensing, standoff detection, and astronomy rely on devices that operate in the mid-infrared range, where active devices can play a critical role in advancing discovery and innovation. Nanostructured graphene has been proposed for active miniaturized mid-infrared devices via excitation of tunable surface plasmons, but typically present low efficiencies due to weak coupling with free-space radiation and plasmon damping. Here we present a strategy to enhance the light-graphene coupling efficiency, in which graphene plasmons couple with gold localized plasmons, creating novel hybridized plasmonic modes. We demonstrate a metasurface in which hybrid plasmons are excited with transmission modulation rates of 17% under moderate doping (0.35 eV) and in ambient conditions. We also evaluate the metasurface as a mid-infrared modulator, measuring switching speeds of up to 16 kHz. Finally, we propose a scheme in which we can excite strongly coupled gold-graphene gap plasmons in the thermal radiation range, with applications to nonlinear optics, slow light, and sensing.
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Affiliation(s)
- Matthew D Feinstein
- Department of Physics, Queens College, City University of New York, Flushing, NY, 11367, USA
- The Graduate Center of the City University of New York, New York, NY, 10016, USA
| | - Euclides Almeida
- Department of Physics, Queens College, City University of New York, Flushing, NY, 11367, USA.
- The Graduate Center of the City University of New York, New York, NY, 10016, USA.
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2
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Sherif SM, Swillam MA. Silicon-based mid infrared on-chip gas sensor using Fano resonance of coupled plasmonic microcavities. Sci Rep 2023; 13:12311. [PMID: 37516742 PMCID: PMC10387087 DOI: 10.1038/s41598-023-38926-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 07/17/2023] [Indexed: 07/31/2023] Open
Abstract
Sensing in the mid infrared spectral range is highly desirable for the detection and monitoring of different gases. We hereby propose a CMOS compatible silicon-based sensor that operates at (3.5-10 μm) within the mid infrared range. The silicon material is doped to the level that shifts its plasmonic resonance to 3 μm wavelength. The sensor device comprises an in-line rectangular microcavity and a stub microcavity resonator. The resonance frequencies/wavelengths of the two resonators were studied with different design dimensions. When the two resonators are designed to resonate at close frequencies, the interesting Fano resonance with its distinct and sharp line shape is excited due to the interference between the two resonance profiles. Fano resonance is useful for highly sensitive measurements due to its abrupt intensity changing profile. The sensor is studied and analyzed using Finite Difference Element and 2D Finite Difference Time Domain methods. The sensor's performance is characterized by its high sensitivity of 6000 nm/RIU, FOM of 353, and limited insertion loss of 0.45 dB around 6.5 μm operation wavelength. Furthermore, we develop the sensor for simultaneously detecting formaldehyde CH2O and nitrous oxide N2O gases from their strong absorption bands at 3.6 μm and 4.46 μm wavelengths, respectively.
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Affiliation(s)
- Sherif M Sherif
- Department of Physics, School of Science and Engineering, The American University in Cairo, Cairo, 11835, Egypt
| | - Mohamed A Swillam
- Department of Physics, School of Science and Engineering, The American University in Cairo, Cairo, 11835, Egypt.
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3
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Yager T, Chikvaidze G, Wang Q, Fu Y. Graphene Hybrid Metasurfaces for Mid-Infrared Molecular Sensors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2113. [PMID: 37513124 PMCID: PMC10385330 DOI: 10.3390/nano13142113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
We integrated graphene with asymmetric metal metasurfaces and optimised the geometry dependent photoresponse towards optoelectronic molecular sensor devices. Through careful tuning and characterisation, combining finite-difference time-domain simulations, electron-beam lithography-based nanofabrication, and micro-Fourier transform infrared spectroscopy, we achieved precise control over the mid-infrared peak response wavelengths, transmittance, and reflectance. Our methods enabled simple, reproducible and targeted mid-infrared molecular sensing over a wide range of geometrical parameters. With ultimate minimization potential down to atomic thicknesses and a diverse range of complimentary nanomaterial combinations, we anticipate a high impact potential of these technologies for environmental monitoring, threat detection, and point of care diagnostics.
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Affiliation(s)
- Tom Yager
- Institute of Solid State Physics, University of Latvia, LV-1063 Riga, Latvia
| | - George Chikvaidze
- Institute of Solid State Physics, University of Latvia, LV-1063 Riga, Latvia
| | - Qin Wang
- RISE Research Institutes of Sweden AB, Box 1070, SE-164 25 Kista, Sweden
| | - Ying Fu
- School of Information Technology, Halmstad University, SE-301 18 Halmstad, Sweden
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4
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Chu S, Liang Y, Lu M, Yuan H, Han Y, Masson JF, Peng W. Mode-Coupling Generation Using ITO Nanodisk Arrays with Au Substrate Enabling Narrow-Band Biosensing. BIOSENSORS 2023; 13:649. [PMID: 37367014 DOI: 10.3390/bios13060649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/03/2023] [Accepted: 06/08/2023] [Indexed: 06/28/2023]
Abstract
Plasmonic metal nanostructures have promising applications in biosensing due to their ability to facilitate light-matter interaction. However, the damping of noble metal leads to a wide full width at half maximum (FWHM) spectrum which restricts sensing capabilities. Herein, we present a novel non-full-metal nanostructure sensor, namely indium tin oxide (ITO)-Au nanodisk arrays consisting of periodic arrays of ITO nanodisk arrays and a continuous gold substrate. A narrow-band spectral feature under normal incidence emerges in the visible region, corresponding to the mode-coupling of surface plasmon modes, which are excited by lattice resonance at metal interfaces with magnetic resonance mode. The FWHM of our proposed nanostructure is barely 14 nm, which is one fifth of that of full-metal nanodisk arrays, and effectively improves the sensing performance. Furthermore, the thickness variation of nanodisks hardly affects the sensing performance of this ITO-based nanostructure, ensuring excellent tolerance during preparation. We fabricate the sensor ship using template transfer and vacuum deposition techniques to achieve large-area and low-cost nanostructure preparation. The sensing performance is used to detect immunoglobulin G (IgG) protein molecules, promoting the widespread application of plasmonic nanostructures in label-free biomedical studies and point-of-care diagnostics. The introduction of dielectric materials effectively reduces FWHM, but sacrifices sensitivity. Therefore, utilizing structural configurations or introducing other materials to generate mode-coupling and hybridization is an effective way to provide local field enhancement and effective regulation.
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Affiliation(s)
- Shuwen Chu
- School of Physics, Dalian University of Technology, Dalian 116024, China
- College of Physical Science and Technology, Dalian University, Dalian 116622, China
| | - Yuzhang Liang
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Mengdi Lu
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Huizhen Yuan
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Yi Han
- Department of Anaesthesia, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Jean-Francois Masson
- Département de Chimie and Centre Québécois sur les Matériaux Fonctionnels (CQMF), Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Wei Peng
- School of Physics, Dalian University of Technology, Dalian 116024, China
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5
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Wang H, Wang T, Yan R, Yue X, Wang L, Wang Y, Zhang J, Wang J. Coupling plasmon-waveguide resonance and multiple plasma modes in hyperbolic metamaterials for high-performance sensing. NANOTECHNOLOGY 2022; 33:465203. [PMID: 35926439 DOI: 10.1088/1361-6528/ac86dd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
A sensor based on plasmon-waveguide resonance (PWR) exhibits an impressive narrow linewidth and has attracted extensive attention in plasmon label-free sensing. However, the low surface electric field intensity limits the detection ability of biomolecules, where the refractive index changes are restricted at the sensor surface. In this study, we study the coupling of PWR and multiple plasma modes in a hyperbolic metamaterial (HMM), combining narrow linewidth and electric field enhancement advantages. The PWR-HMM sensor includes a gold film, lossless dielectric layer, and metal/dielectric multilayer HMM array composed of 2-layer Au/Al2O3stacks. The evanescent field of PWR is used to excite multiple plasma modes in the HMM. The figure of merit of the proposed structure reaches 5417/RIU owing to the existence of lossless dielectric layer, which is 11.7 times than the conventional gold film structure. The maximum bulk sensitivity of the PWR-HMM sensor was 43 000 nm/RIU. In comparison with PWR, the surface electric field intensity and the surface sensitivity of PWR-HMM increase by four and two times, respectively. Furthermore, comparing the sensing performance of the PWR-HMM sensor and PWR-nanoparticle (NP) sensor (coupling PWR and localized surface plasmon resonance), it was found that PWR-HMM has 20% higher surface sensitivity than the PWR-NP. A sensing mechanism coupling PWR and multiple plasma modes in the HMMs opens a gate to significantly improve the PWR sensors performance, which is expected to be used to resolve urgent issues in biological, medical and clinical applications.
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Affiliation(s)
- Huimin Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Tao Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Ruoqin Yan
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Xinzhao Yue
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Lu Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Yuandong Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Jinyan Zhang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Jian Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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Wen C, Luo J, Xu W, Zhu Z, Qin S, Zhang J. Enhanced Molecular Infrared Spectroscopy Employing Bilayer Graphene Acoustic Plasmon Resonator. BIOSENSORS 2021; 11:431. [PMID: 34821647 PMCID: PMC8615808 DOI: 10.3390/bios11110431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/20/2021] [Accepted: 10/26/2021] [Indexed: 05/04/2023]
Abstract
Graphene plasmon resonators with the ability to support plasmonic resonances in the infrared region make them a promising platform for plasmon-enhanced spectroscopy techniques. Here we propose a resonant graphene plasmonic system for infrared spectroscopy sensing that consists of continuous graphene and graphene ribbons separated by a nanometric gap. Such a bilayer graphene resonator can support acoustic graphene plasmons (AGPs) that provide ultraconfined electromagnetic fields and strong field enhancement inside the nano-gap. This allows us to selectively enhance the infrared absorption of protein molecules and precisely resolve the molecular structural information by sweeping graphene Fermi energy. Compared to the conventional graphene plasmonic sensors, the proposed bilayer AGP sensor provides better sensitivity and improvement of molecular vibrational fingerprints of nanoscale analyte samples. Our work provides a novel avenue for enhanced infrared spectroscopy sensing with ultrasmall volumes of molecules.
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Affiliation(s)
- Chunchao Wen
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China; (C.W.); (J.L.); (W.X.); (Z.Z.); (S.Q.)
- Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, Changsha 410073, China
| | - Jie Luo
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China; (C.W.); (J.L.); (W.X.); (Z.Z.); (S.Q.)
- Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, Changsha 410073, China
| | - Wei Xu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China; (C.W.); (J.L.); (W.X.); (Z.Z.); (S.Q.)
- Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, Changsha 410073, China
| | - Zhihong Zhu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China; (C.W.); (J.L.); (W.X.); (Z.Z.); (S.Q.)
- Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, Changsha 410073, China
| | - Shiqiao Qin
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China; (C.W.); (J.L.); (W.X.); (Z.Z.); (S.Q.)
- Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, Changsha 410073, China
| | - Jianfa Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China; (C.W.); (J.L.); (W.X.); (Z.Z.); (S.Q.)
- Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, Changsha 410073, China
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Surface Plasmonic Sensors: Sensing Mechanism and Recent Applications. SENSORS 2021; 21:s21165262. [PMID: 34450704 PMCID: PMC8401600 DOI: 10.3390/s21165262] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 12/17/2022]
Abstract
Surface plasmonic sensors have been widely used in biology, chemistry, and environment monitoring. These sensors exhibit extraordinary sensitivity based on surface plasmon resonance (SPR) or localized surface plasmon resonance (LSPR) effects, and they have found commercial applications. In this review, we present recent progress in the field of surface plasmonic sensors, mainly in the configurations of planar metastructures and optical-fiber waveguides. In the metastructure platform, the optical sensors based on LSPR, hyperbolic dispersion, Fano resonance, and two-dimensional (2D) materials integration are introduced. The optical-fiber sensors integrated with LSPR/SPR structures and 2D materials are summarized. We also introduce the recent advances in quantum plasmonic sensing beyond the classical shot noise limit. The challenges and opportunities in this field are discussed.
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Du G, Bao X, Lin S, Pang H, Bannur Nanjunda S, Bao Q. Infrared Polaritonic Biosensors Based on Two-Dimensional Materials. Molecules 2021; 26:molecules26154651. [PMID: 34361804 PMCID: PMC8347072 DOI: 10.3390/molecules26154651] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
In recent years, polaritons in two-dimensional (2D) materials have gained intensive research interests and significant progress due to their extraordinary properties of light-confinement, tunable carrier concentrations by gating and low loss absorption that leads to long polariton lifetimes. With additional advantages of biocompatibility, label-free, chemical identification of biomolecules through their vibrational fingerprints, graphene and related 2D materials can be adapted as excellent platforms for future polaritonic biosensor applications. Extreme spatial light confinement in 2D materials based polaritons supports atto-molar concentration or single molecule detection. In this article, we will review the state-of-the-art infrared polaritonic-based biosensors. We first discuss the concept of polaritons, then the biosensing properties of polaritons on various 2D materials, then lastly the impending applications and future opportunities of infrared polaritonic biosensors for medical and healthcare applications.
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Affiliation(s)
- Guangyu Du
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China; (G.D.); (H.P.)
- Songshan Lake Materials Laboratory, Dongguan 523808, China;
| | - Xiaozhi Bao
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Macau, China;
| | - Shenghuang Lin
- Songshan Lake Materials Laboratory, Dongguan 523808, China;
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China; (G.D.); (H.P.)
| | - Shivananju Bannur Nanjunda
- Department of Electrical Engineering, Centre of Excellence in Biochemical Sensing and Imaging Technologies (Cen-Bio-SIM), Indian Institute of Technology Madras, Chennai 600036, India
- Correspondence: (S.B.N.); (Q.B.)
| | - Qiaoliang Bao
- Shenzhen Exciton Science and Technology Ltd., Shenzhen 518052, China
- Correspondence: (S.B.N.); (Q.B.)
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Cynthia S, Ahmed R, Islam S, Ali K, Hossain M. Graphene based hyperbolic metamaterial for tunable mid-infrared biosensing. RSC Adv 2021; 11:7938-7945. [PMID: 35423319 PMCID: PMC8695080 DOI: 10.1039/d0ra09781k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/12/2021] [Indexed: 12/16/2022] Open
Abstract
Plasmonic biosensors, operating in the mid-infrared (mid-IR) region, are well-suited for highly specific and label-free optical biosensing. The principle of operation is based on detecting the shift in resonance wavelength caused by the interaction of biomolecules with the surrounding medium. However, metallic plasmonic biosensors suffer from poor signal transduction and high optical losses in the mid-IR range, leading to low sensitivity. Here, we introduce a hyperbolic metamaterial (HMM) biosensor, that exploits the strong, tunable, mid-IR localization of graphene plasmons, for detecting nanometric biomolecules with high sensitivity. The HMM stack consists of alternating graphene/Al2O3 multilayers, on top of a gold grating structure with rounded corners, to produce plasmonic hotspots and enhance sensing performance. Sensitivity and figure-of-merit (FOM) can be systematically tuned, by varying the structural parameters of the HMM stack and the doping levels (Fermi energy) in graphene. Finite-difference time-domain (FDTD) analysis demonstrates that the proposed biosensor can achieve sensitivities as high as 4052 nm RIU-1 (refractive index unit) with a FOM of 11.44 RIU-1. We anticipate that the reported graphene/Al2O3 HMM device will find potential application as a mid-IR, highly sensitive plasmonic biosensor, for tunable and label-free detection.
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Affiliation(s)
- Sarah Cynthia
- Department of Electrical and Electronic Engineering, University of Dhaka Dhaka-1000 Bangladesh
| | - Rajib Ahmed
- School of Medicine, Stanford University Palo Alto California 94304 USA
| | - Sharnali Islam
- Department of Electrical and Electronic Engineering, University of Dhaka Dhaka-1000 Bangladesh
| | - Khaleda Ali
- Department of Electrical and Electronic Engineering, University of Dhaka Dhaka-1000 Bangladesh
| | - Mainul Hossain
- Department of Electrical and Electronic Engineering, University of Dhaka Dhaka-1000 Bangladesh
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Jiang X, Zhang Z, Chen D, Wen K, Yang J. Tunable multilayer-graphene-based broadband metamaterial selective absorber. APPLIED OPTICS 2020; 59:11137-11145. [PMID: 33361943 DOI: 10.1364/ao.409271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/12/2020] [Indexed: 06/12/2023]
Abstract
We propose a tunable multilayer-graphene-based broadband metamaterial selective absorber using the finite-difference time domain. The simulation results reveal that the absorption spectra of the proposed metamaterial with the nano-cylinder and 30-layer graphene show high absorption (88.3%) in the range of 250-2300 nm, which covers the entire solar spectrum. Moreover, the graphene-based metamaterial has a low thermal emittance of 3.3% in the mid-infrared range (4-13 µm), which can greatly reduce the heat loss. The proposed metamaterial has a tunable cutoff wavelength, which can be tuned by controlling the Fermi level of graphene. In addition, our structure is an angle-insensitive absorber, and the device has the potential to be widely used in solar cell and thermal detectors.
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Ullah Z, Witjaksono G, Nawi I, Tansu N, Irfan Khattak M, Junaid M. A Review on the Development of Tunable Graphene Nanoantennas for Terahertz Optoelectronic and Plasmonic Applications. SENSORS (BASEL, SWITZERLAND) 2020; 20:E1401. [PMID: 32143388 PMCID: PMC7085581 DOI: 10.3390/s20051401] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/07/2020] [Accepted: 02/10/2020] [Indexed: 01/15/2023]
Abstract
Exceptional advancement has been made in the development of graphene optical nanoantennas. They are incorporated with optoelectronic devices for plasmonics application and have been an active research area across the globe. The interest in graphene plasmonic devices is driven by the different applications they have empowered, such as ultrafast nanodevices, photodetection, energy harvesting, biosensing, biomedical imaging and high-speed terahertz communications. In this article, the aim is to provide a detailed review of the essential explanation behind graphene nanoantennas experimental proofs for the developments of graphene-based plasmonics antennas, achieving enhanced light-matter interaction by exploiting graphene material conductivity and optical properties. First, the fundamental graphene nanoantennas and their tunable resonant behavior over THz frequencies are summarized. Furthermore, incorporating graphene-metal hybrid antennas with optoelectronic devices can prompt the acknowledgment of multi-platforms for photonics. More interestingly, various technical methods are critically studied for frequency tuning and active modulation of optical characteristics, through in situ modulations by applying an external electric field. Second, the various methods for radiation beam scanning and beam reconfigurability are discussed through reflectarray and leaky-wave graphene antennas. In particular, numerous graphene antenna photodetectors and graphene rectennas for energy harvesting are studied by giving a critical evaluation of antenna performances, enhanced photodetection, energy conversion efficiency and the significant problems that remain to be addressed. Finally, the potential developments in the synthesis of graphene material and technological methods involved in the fabrication of graphene-metal nanoantennas are discussed.
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Affiliation(s)
- Zaka Ullah
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia;
| | - Gunawan Witjaksono
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia;
| | - Illani Nawi
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia;
| | - Nelson Tansu
- Center for Photonics and Nanoelectronics, Department of Electrical and Computer Engineering, Lehigh University, 7 Asa Drive, Bethlehem, PA 18015, USA
| | - Muhammad Irfan Khattak
- Department of Electrical Communication Engineering, University of Engineering and Technology Peshawar, Kohat campus, Kohat 26030, Pakistan
| | - Muhammad Junaid
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia;
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12
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Fano-Resonance in Hybrid Metal-Graphene Metamaterial and Its Application as Mid-Infrared Plasmonic Sensor. MICROMACHINES 2020; 11:mi11030268. [PMID: 32143457 PMCID: PMC7143786 DOI: 10.3390/mi11030268] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 12/20/2022]
Abstract
Fano resonances in nanostructures have attracted widespread research interests in the past few years for their potential applications in sensing, switching and nonlinear optics. In this paper, a mid-infrared Fano resonance in a hybrid metal-graphene metamaterial is studied. The hybrid metamaterial consists of a metallic grid enclosing with graphene nanodisks. The Fano resonance arises from the coupling of graphene and metallic plasmonic resonances and it is sharper than plasmonic resonances in pure graphene nanostructures. The resonance strength can be enhanced by increasing the number of graphene layers. The proposed metamaterial can be employed as a high-performance mid-infrared plasmonic sensor with an unprecedented sensitivity of about 7.93 μ m/RIU and figure of merit (FOM) of about 158 . 7 .
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