1
|
Niu J, Hui Q, Mo W, Yao Q, Gong H, Tian R, Zhu A. A dual functional tunable terahertz metamaterial absorber based on vanadium dioxide. Phys Chem Chem Phys 2024; 26:10633-10640. [PMID: 38511282 DOI: 10.1039/d4cp00081a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
A dual-functional switchable metamaterial absorber (MMA) based on vanadium dioxide (VO2), which achieves flexible switching between broadband absorption and four-band absorption by adjusting the VO2 conductivity, was proposed. The device has a broadband absorption function when VO2 is in the metal phase, and the conductivity is 3 × 105 S m-1. Numerical simulation shows that the absorption rate of the device reaches over 90% in the frequency range of 3.36-6.98 THz. The absorber exhibits polarization insensitivity and wide-angle absorption to transverse electric (TE) and transverse magnetic (TM) waves. When VO2 is in the insulator phase, and the conductivity is 3 × 102 S m-1, the device switches to a narrowband absorber with a band-efficient absorption function. Numerical simulation shows that the device has an absorption rate of 99.7% at 2.39 THz, 98.3% at 2.83 THz, 95.6% at 3.84 THz, and 96.1% at 4.61 THz. It can be used as a sensor with high sensitivity. In addition, to verify the absorption mechanism of the absorber, we introduced impedance matching theory to analyze the device. Finally, the influence of structural parameters on the performance of resonators was investigated. Through the joint action of multi-layer structures, the proposed MMA concentrates broadband and narrowband absorption functions on one device, achieving flexible switching between tasks without changing the structure. The switchable metamaterial absorber designed through simple tuning methods has broad application prospects in stealth technology and thermal emitters. It provides a wide range of ideas for the design of terahertz functional devices.
Collapse
Affiliation(s)
- Junhao Niu
- Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of ElectronicTechnology, Guilin 541004, China.
| | - Qiang Hui
- Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of ElectronicTechnology, Guilin 541004, China.
| | - Wei Mo
- Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of ElectronicTechnology, Guilin 541004, China.
| | - Qianyu Yao
- Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of ElectronicTechnology, Guilin 541004, China.
| | - Haozhuo Gong
- Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of ElectronicTechnology, Guilin 541004, China.
| | - Renfang Tian
- Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of ElectronicTechnology, Guilin 541004, China.
| | - Aijun Zhu
- Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of ElectronicTechnology, Guilin 541004, China.
| |
Collapse
|
2
|
Chen Y, Sun G, Wei J, Miao Y, Zhang W, Wu K, Wang Q. Ultrahigh-Q Polarization-Independent Terahertz Metamaterial Absorber Using Pattern-Free Graphene for Sensing Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:605. [PMID: 38607139 PMCID: PMC11013051 DOI: 10.3390/nano14070605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/24/2024] [Accepted: 03/27/2024] [Indexed: 04/13/2024]
Abstract
In contrast to noble metals, graphene exhibits significantly lower loss, especially useful for optical sensing applications that require ultrahigh Q factors, and offer wide range tunability via an adjustable Fermi level. However, precise graphene patterning is difficult, especially for large areas, severely limiting its applications. Here, a tunable terahertz metamaterial absorber (TMMA) with ultrahigh Q factors consisting of a continuous, pattern-free graphene is demonstrated. A graphene sheet is overlaid on an Al metal array, forming a structure that supports strong localized surface plasmon polaritons (LSPPs) with fields tightly confined in the graphene, minimizing loss. Theoretical results show that this TMMA exhibits an ultrahigh Q factor of 1730, a frequency sensitivity of 2.84 THz/RIU, and an excellent figure of merit (FoM) of 365.85 RIU-1, independent of polarization. A tunability from ~2.25 to ~3.25 THz is also achieved by tuning Ef of graphene from 0.3 to 0.7 eV. The proposed graphene-based TMMA holds many potential applications, particularly in the field of sensing.
Collapse
Affiliation(s)
- Youxin Chen
- National Key Laboratory of Advanced Micro and Nano Fabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.C.); (G.S.); (J.W.); (Y.M.); (W.Z.)
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Guotao Sun
- National Key Laboratory of Advanced Micro and Nano Fabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.C.); (G.S.); (J.W.); (Y.M.); (W.Z.)
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiang Wei
- National Key Laboratory of Advanced Micro and Nano Fabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.C.); (G.S.); (J.W.); (Y.M.); (W.Z.)
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yan Miao
- National Key Laboratory of Advanced Micro and Nano Fabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.C.); (G.S.); (J.W.); (Y.M.); (W.Z.)
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wenqian Zhang
- National Key Laboratory of Advanced Micro and Nano Fabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.C.); (G.S.); (J.W.); (Y.M.); (W.Z.)
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Kaiyu Wu
- National Key Laboratory of Advanced Micro and Nano Fabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.C.); (G.S.); (J.W.); (Y.M.); (W.Z.)
| | - Qingkang Wang
- National Key Laboratory of Advanced Micro and Nano Fabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.C.); (G.S.); (J.W.); (Y.M.); (W.Z.)
| |
Collapse
|
3
|
Wang Y, Li X, Wu S, Hu C, Liu Y. Design of metamaterial perfect absorbers in the long-wave infrared region. Phys Chem Chem Phys 2023; 26:551-557. [PMID: 38086645 DOI: 10.1039/d3cp05333d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
We designed a narrow-band metamaterial absorber (NMA) and an ultra-broadband metamaterial perfect absorber (UMPA) based on the impedance matching theory. The narrow-band metamaterial absorber mainly consists of Si3N4 cylinders with Si3N4 and Ti substrates. Numerical analysis shows that the absorption peak of the NMA is about 99.9% and the absorption bandwidth with more than 90% absorption is about 4.8 μm (9.5-14.3 μm). To further extend the absorption bandwidth, an ultra-broadband absorber was designed by integrating a Ti hyperbolic rectangle into the Si3N4 cylinder of the NMA. Numerical analysis shows that the absorption bandwidth of the UMPA is up to 10 μm (7-17 μm) with an average absorption rate of 96.6%. The designed UMPA has polarization insensitive properties with wide-angle absorption characteristics, and the average absorption can reach 85% and 76% in transverse magnetic (TM) and transverse electric (TE) modes, respectively, at 60° oblique incidence. The high absorption and wide band are mainly dominated by localized surface plasmon resonance, Fabry-Perot resonance and inter-resonance interactions. The designed absorber achieves excellent absorption in the long infrared wavelength band, which has potential applications in energy absorption, infrared sensing and other fields.
Collapse
Affiliation(s)
- Yang Wang
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China
| | - Xiu Li
- School of Economics and Management, Huainan Normal University, Huainan 232000, China
| | - Shenbing Wu
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China
| | - Changjun Hu
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China
| | - Yuanyuan Liu
- School of Information Engineering, East China Jiaotong University, Nanchang 330013, China.
| |
Collapse
|
4
|
Soliman MM, Islam MT, Alam T, Misran N, Abdul Rahim SK, Alzamil A, Chowdhury MEH, Alshammari AS, Alsaif H, Soliman MS. Broadband near unity absorption meta-structure for solar thermophotovoltaic systems and optical window applications. NANOSCALE 2023; 15:12972-12994. [PMID: 37477438 DOI: 10.1039/d3nr01941a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Developing a meta-structure with near-unity absorbance in the visible and infrared spectra for solar energy harvesting, photodetection, thermal imaging, photo-trapping, and optical communications is a long-term research challenge. This research presents a four-layered (insulator-metal-insulator-metal) meta-structure unit cell that showed a peak absorbance of 99.99% at 288-300 nm and the average absorbance of 99.18% over the 250-2000 nm wavelength range in TE and TM modes, respectively. The symmetric pattern of the resonator layer shows polarization insensitivity with an average absorption of 99.18% in both TE and TM modes. Furthermore, the proposed design shows a wide incident angle stability up to ≤60 degrees in both TE and TM modes. The proposed structure also exhibits negative index properties at 288-300 nm and 1000-2000 nm, respectively. The negative index properties of the proposed design generate an anti-parallel surface current flow in the ground and resonator layers, which induces magnetic and electric field resonance and increases absorption. The performance of the proposed design is further validated by the interference theory model and a zero value for the polarization conversion ratio (PCR). The electric field E, magnetic field H, and current distribution are analyzed to explain the absorption mechanism of the proposed meta-structure unit cell. It also exhibits the highest photo-thermal conversion efficiency of 99.11%, demonstrating the viability of the proposed design as a solar absorber. The proposed design promises potentially valuable applications such as solar energy harvesting, photodetection, thermal imaging, photo-trapping, and optical communications because of its decent performance.
Collapse
Affiliation(s)
- Md Mohiuddin Soliman
- Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, 43600 UKM Bangi, Selangor, Malaysia.
| | - Mohammad Tariqul Islam
- Center for Advanced Electronic and Communication Engineering, Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, 43600 UKM Bangi, Selangor, Malaysia.
| | - Touhidul Alam
- Pusat Sains Ankasa (ANGKASA), Institut Perubahan Iklim, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia.
| | - Norbahiah Misran
- Center for Advanced Electronic and Communication Engineering, Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, 43600 UKM Bangi, Selangor, Malaysia.
| | | | - Ahmed Alzamil
- Department of Electrical Engineering, College of Engineering, University of Ha'il, Ha'il 81481, Saudi Arabia.
| | | | - Ahmed S Alshammari
- Department of Electrical Engineering, College of Engineering, University of Ha'il, Ha'il 81481, Saudi Arabia.
| | - Haitham Alsaif
- Department of Electrical Engineering, College of Engineering, University of Ha'il, Ha'il 81481, Saudi Arabia.
| | - Mohamed S Soliman
- Department of Electrical Engineering, College of Engineering, Taif University, P. O. Box 11099, Taif 21944, Saudi Arabia.
- Department of Electrical Engineering, Faculty of Energy Engineering, Aswan University, Aswan 81528, Egypt
| |
Collapse
|
5
|
Jiang J, Xu W, Wu Y, Duan G, Xu C, Zhao Q, Zhu H, Zhang X, Wang BX. Four-band terahertz metamaterial absorber based on Dirac semimetal for a refractive index sensing application. APPLIED OPTICS 2023; 62:4706-4715. [PMID: 37707169 DOI: 10.1364/ao.488472] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/10/2023] [Indexed: 09/15/2023]
Abstract
We design a four-band narrow-band near-perfect absorber based on bulk Dirac semimetal (BDS) metamaterial in the terahertz region. The absorber has a top-to-bottom three-layer structure of a BDS layer, an insulating dielectric slab, and a gold layer. The BDS is flexible and tunable, allowing the Fermi energy level to be adjusted by changing the applied bias voltage, thus changing the absorption characteristics of the absorber. We use the time-domain finite-difference method to simulate the absorption characteristics of the absorber, which could achieve four discrete near-perfect absorption peaks at 0.98 THz, 1.70 THz, 2.02 THz, and 2.36 THz. The absorber is polarization sensitive, and the conversion between four-band absorption and three-band absorption is achieved by changing the incident polarization angle. We also change the structure of the absorber to study the absorption characteristics and break the structural symmetry to achieve a larger number of absorption peaks. Besides, the sensing performance of four-band narrow-band absorption is analyzed, and the maximum sensitivity of the absorber is 112.78 GHz/RIU. The device should have vast application prospects for bio-detection and high-sensitivity biosensing detection.
Collapse
|
6
|
Wu F, Shi P, Yi Z, Li H, Yi Y. Ultra-Broadband Solar Absorber and High-Efficiency Thermal Emitter from UV to Mid-Infrared Spectrum. MICROMACHINES 2023; 14:mi14050985. [PMID: 37241609 DOI: 10.3390/mi14050985] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023]
Abstract
Solar energy is currently a very popular energy source because it is both clean and renewable. As a result, one of the main areas of research now is the investigation of solar absorbers with broad spectrum and high absorption efficiency. In this study, we create an absorber by superimposing three periodic Ti-Al2O3-Ti discs on a W-Ti-Al2O3 composite film structure. We evaluated the incident angle, structural components, and electromagnetic field distribution using the finite difference in time domain (FDTD) method in order to investigate the physical process by which the model achieves broadband absorption. We find that distinct wavelengths of tuned or resonant absorption may be produced by the Ti disk array and Al2O3 through near-field coupling, cavity-mode coupling, and plasmon resonance, all of which can effectively widen the absorption bandwidth. The findings indicate that the solar absorber's average absorption efficiency can range from 95.8% to 96% over the entire band range of 200 to 3100 nm, with the absorption bandwidth of 2811 nm (244-3055 nm) having the highest absorption rate. Additionally, the absorber only contains tungsten (W), titanium (Ti), and alumina (Al2O3), three materials with high melting points, which offers a strong assurance for the absorber's thermal stability. It also has a very high thermal radiation intensity, reaching a high radiation efficiency of 94.4% at 1000 K, and a weighted average absorption efficiency of 98.3% at AM1.5. Additionally, the incidence angle insensitivity of our suggested solar absorber is good (0-60°) and polarization independence is good (0-90°). These benefits enable a wide range of solar thermal photovoltaic applications for our absorber and offer numerous design options for the ideal absorber.
Collapse
Affiliation(s)
- Fuyan Wu
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Pengcheng Shi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Hailiang Li
- Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Yougen Yi
- College of Physics and Electronics, Central South University, Changsha 410083, China
| |
Collapse
|
7
|
Lai R, Shi P, Yi Z, Li H, Yi Y. Triple-Band Surface Plasmon Resonance Metamaterial Absorber Based on Open-Ended Prohibited Sign Type Monolayer Graphene. MICROMACHINES 2023; 14:mi14050953. [PMID: 37241576 DOI: 10.3390/mi14050953] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023]
Abstract
This paper introduces a novel metamaterial absorber based on surface plasmon resonance (SPR). The absorber is capable of triple-mode perfect absorption, polarization independence, incident angle insensitivity, tunability, high sensitivity, and a high figure of merit (FOM). The structure of the absorber consists of a sandwiched stack: a top layer of single-layer graphene array with an open-ended prohibited sign type (OPST) pattern, a middle layer of thicker SiO2, and a bottom layer of the gold metal mirror (Au). The simulation of COMSOL software suggests it achieves perfect absorption at frequencies of fI = 4.04 THz, fII = 6.76 THz, and fIII = 9.40 THz, with absorption peaks of 99.404%, 99.353%, and 99.146%, respectively. These three resonant frequencies and corresponding absorption rates can be regulated by controlling the patterned graphene's geometric parameters or just adjusting the Fermi level (EF). Additionally, when the incident angle changes between 0~50°, the absorption peaks still reach 99% regardless of the kind of polarization. Finally, to test its refractive index sensing performance, this paper calculates the results of the structure under different environments which demonstrate maximum sensitivities in three modes: SI = 0.875 THz/RIU, SII = 1.250 THz/RIU, and SIII = 2.000 THz/RIU. The FOM can reach FOMI = 3.74 RIU-1, FOMII = 6.08 RIU-1, and FOMIII = 9.58 RIU-1. In conclusion, we provide a new approach for designing a tunable multi-band SPR metamaterial absorber with potential applications in photodetectors, active optoelectronic devices, and chemical sensors.
Collapse
Affiliation(s)
- Runing Lai
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Pengcheng Shi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Hailiang Li
- Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Yougen Yi
- College of Physics and Electronics, Central South University, Changsha 410083, China
| |
Collapse
|
8
|
Zhu W, Yi Y, Yi Z, Bian L, Yang H, Zhang J, Yu Y, Liu C, Li G, Wu X. High confidence plasmonic sensor based on photonic crystal fibers with a U-shaped detection channel. Phys Chem Chem Phys 2023; 25:8583-8591. [PMID: 36883940 DOI: 10.1039/d2cp04605a] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
In order to improve the performance of optical fiber sensing and expand its application, a photonic crystal fiber (PCF) plasmonic sensor with a U-shaped channel based on surface plasmon resonance (SPR) is proposed. We have studied the general influence rules of structural parameters such as the radius of the air hole, the thickness of the gold film and the number of U-shaped channels using COMSOL based on the finite element method. The dispersion curves and loss spectrum of the surface plasmon polariton (SPP) mode and the Y-polarization (Y-pol) mode as well as the distribution of the electric field intensity (normE) under various conditions are studied using the coupled mode theory. The maximum refractive index (RI) sensitivity achieved in the RI range of 1.38-1.43 is 24.1 μm RIU-1, which corresponds to a full width at half maximum (FWHM) of 10.0 nm, a figure of merit (FOM) of 2410 RIU-1 and a resolution of 4.15 × 10-6 RIU. The results show that the proposed sensor combines the SPR effect, which is extremely sensitive to changes in the RI of the surrounding medium and realizes real-time detection of the external environment by analyzing the light signal modulated by the sensor. In addition, the detection range and sensitivity can be extended by adjusting the structural parameters. The proposed sensor has a simple structure with excellent sensing performance, which provides a new idea and implementation method for real-time detection, long-range measurement, complex environment monitoring and highly integrated sensing, and has a strong potential practical value.
Collapse
Affiliation(s)
- Wanlai Zhu
- Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process TestingTechnology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Yingting Yi
- College of Physics and Electronics, Central South University, Changsha 410083, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process TestingTechnology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Liang Bian
- Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process TestingTechnology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Hua Yang
- School of Science, Lanzhou University of Technology, Lanzhou 730050, China
| | - Jianguo Zhang
- Department of Physics, Jinzhong University, Jinzhong 030619, China
| | - Yang Yu
- College of Liberal Arts and Sciences, Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha 410073, China
| | - Chao Liu
- School of Physics and Electronics Engineering, Northeast Petroleum University, Daqing 163318, China
| | - Gongfa Li
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Xianwen Wu
- Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of science and Technology, Wuhan 430081, China
| |
Collapse
|
9
|
Li W, Ma J, Zhang H, Cheng S, Yang W, Yi Z, Yang H, Zhang J, Wu X, Wu P. Tunable broadband absorber based on a layered resonant structure with a Dirac semimetal. Phys Chem Chem Phys 2023; 25:8489-8496. [PMID: 36883439 DOI: 10.1039/d2cp05562g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
With the development of science and technology, intermediate infrared technology has gained more and more attention in recent years. In the research described in this paper, a tunable broadband absorber based on a Dirac semimetal with a layered resonant structure was designed, which could achieve high absorption (more than 0.9) of about 8.7 THz in the frequency range of 18-28 THz. It was confirmed that the high absorption of the absorber comes from the strong resonance absorption between the layers, and the resonance of the localised surface plasmon. The absorber has a gold substrate, which is composed of three layers of Dirac semimetal and three layers of optical crystal plates. In addition, the resonance frequency of the absorber can be changed by adjusting the Fermi energy of the Dirac semimetal. The absorber also shows excellent characteristics such as tunability, absorption stability at different polarisation waves and incident angles, and has a high application value for use in radar countermeasures, biotechnology and other fields.
Collapse
Affiliation(s)
- Wenxin Li
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei, 434023, China.
| | - Jing Ma
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei, 434023, China.
| | - Huafeng Zhang
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei, 434023, China.
| | - Shubo Cheng
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei, 434023, China.
| | - Wenxing Yang
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei, 434023, China.
| | - Zao Yi
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei, 434023, China.
- Joint Laboratory for Extreme Conditions Matter Properties, State Key Laboratory of EnvironmentFriendly Energy Materials, Key Laboratory of Manufacturing Process Testing Technology, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Hua Yang
- School of Science, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Jianguo Zhang
- Department of Physics, Jinzhong University, Jinzhong, 030619, China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University, Jishou, 416000, China
| | - Pinghui Wu
- Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices, Quanzhou Normal University, Quanzhou, 362000, China
| |
Collapse
|
10
|
Wu J, Qing YM. Tunable near-perfect nonreciprocal radiation with a Weyl semimetal and graphene. Phys Chem Chem Phys 2023; 25:9586-9591. [PMID: 36942521 DOI: 10.1039/d2cp05945b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
A tunable near-perfect nonreciprocal thermal emitter, consisting of a dielectric plane and a monolayer graphene sandwiched between a subwavelength grating and a Weyl semimetal plane, is proposed and investigated. Near-complete nonreciprocal radiation can be achieved at resonance, breaking the traditional Kirchhoff's law. The underlying physical mechanism, resulting from a guided mode resonance, is disclosed by illustrating the magnetic field distribution. Moreover, the strong nonreciprocity remains well within a wide range of geometrical parameters. What's more, the performance of the near-perfect spectral nonreciprocity can be flexibly controlled in a wide spectral range through varying the Fermi level of graphene and the axial vector of the Weyl semimetal, which reduces the cost and should be interesting for real application. The conclusions of this paper should prompt the further development of tunable nonreciprocal thermal emitters.
Collapse
Affiliation(s)
- Jun Wu
- College of Electrical Engineering, Anhui Polytechnic University, Wuhu, 241000, China.
| | - Ye Ming Qing
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China.
| |
Collapse
|
11
|
Li X, Cui T, Zhuang S, Qian W, Lin L, Su W, Gong C, Liu W. Multi-functional terahertz metamaterials based on nano-imprinting. OPTICS EXPRESS 2023; 31:9224-9235. [PMID: 37157496 DOI: 10.1364/oe.481919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
This paper reports a multi-functional terahertz (THz) metamaterial based on a nano-imprinting method. The metamaterial is composed of four layers: 4 L resonant layer, dielectric layer, frequency selective layer, and dielectric layer. The 4 L resonant structure can achieve broadband absorption, while the frequency selective layer can achieve transmission of specific band. The nano-imprinting method combines electroplating of nickel mold and printing of silver nano-particle ink. Using this method, the multilayer metamaterial structures can be fabricated on ultrathin flexible substrates to achieve visible light transparency. For verification, a THz metamaterial with broadband absorption in low frequency and efficient transmission in high frequency is designed and printed. The sample's thickness is about 200 µm and area is 65 × 65 mm2. Moreover, a fiber-based multi-mode terahertz time-domain spectroscopy system was built to test its transmission and reflection spectra. The results are consistent with the expectations.
Collapse
|
12
|
Li Y, Xu Y, Jiang J, Cheng S, Yi Z, Xiao G, Zhou X, Wang Z, Chen Z. Polarization-sensitive multi-frequency switches and high-performance slow light based on quadruple plasmon-induced transparency in a patterned graphene-based terahertz metamaterial. Phys Chem Chem Phys 2023; 25:3820-3833. [PMID: 36645136 DOI: 10.1039/d2cp05368c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A periodic patterned graphene-based terahertz metamaterial comprising three transverse graphene strips and one longitudinal continuous graphene ribbon is proposed to achieve a dynamically tunable quadruple plasmon-induced transparency (PIT) effect. Further analysis of the magnetic field distribution along the x-direction shows that the quadruple-PIT window can be produced by the strong destructive interference between the bright mode and the dark mode. The spectral response characteristics of the quadruple-PIT effect are numerically and theoretically investigated, and the results obtained by the finite-difference time-domain (FDTD) simulation fit well with that by the coupled mode theory (CMT) calculation. In addition, two hepta-frequency asynchronous switches are achieved by tuning the Fermi energy of the graphene, and their maximum modulation depths are 98.9% and 99.7%, corresponding to the insertion losses of 0.173 dB and 0.334 dB, respectively. Further studies show that polarization light has a significant impact on the quadruple-PIT, resulting in a polarization-sensitive switch being realized with a maximum modulation depth of 99.7% and a minimum insertion loss of 0.048 dB. In addition, when the Fermi energy is equal to 1.2 eV, the maximum time delay and group refractive index of the quadruple-PIT can be respectively as high as 1.065 ps and 3194, and the maximum delay-bandwidth product reaches 1.098, which means that excellent optical storage is achieved. Thus, our proposed quadruple-PIT system can be used to design a terahertz multi-channel switch and optical storage.
Collapse
Affiliation(s)
- Yuhui Li
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China.
| | - Yiping Xu
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China.
| | - Jiabao Jiang
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China.
| | - Shubo Cheng
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China.
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Guohui Xiao
- Jiangxi Province Key Laboratory of Optoelectronics and Communications, Jiangxi Science and Technology Normal University, Nanchang 330038, China
| | - Xianwen Zhou
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China.
| | - Ziyi Wang
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China.
| | - Zhanyu Chen
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China.
| |
Collapse
|
13
|
Zhang J, Ma J, Sun X, Yi Z, Xian T, Wu X, Liu G, Wang X, Yang H. Construction of Z-Scheme Ag 2MoO 4/ZnWO 4 Heterojunctions for Photocatalytically Removing Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1159-1172. [PMID: 36628490 DOI: 10.1021/acs.langmuir.2c02939] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Facilitation of the photocarrier separation is a crucial strategy for developing highly efficient photocatalysts in eliminating environmental pollutants. Herein we have developed a new kind of Ag2MoO4/ZnWO4 (AMO/ZWO) composite photocatalysts with a Z-scheme mechanism by anchoring AMO nanoparticles onto ZWO nanorods. Multiple characterization methodologies and density functional theory (DFT) calculations were employed to study the performances of the AMO/ZWO heterojunctions as well as the underlying photocatalytic mechanism. Simulated-sunlight-driven photodegradation experiments for removing methylene blue (MB) demonstrates that the 8%AMO/ZWO heterojunction can photocatalytically remove 99.8% of MB within 60 min, and the reaction rate constant is obtained as 0.10199 min-1, which is enhanced by 6.8 (or 4.9) times when compared with that of pure ZWO (or AMO). On the base of the experimental results and DFT calculations, the enhanced photocatalytic mechanism of the AMO/ZWO heterojunctions was revealed to be the efficient separation of photocarriers via a Z-scheme transfer process. In addition, photodegradion of various organic pollutants over 8%AMO/ZWO was further compared and aimed at incorporating it into industrial application in pollutant removal.
Collapse
Affiliation(s)
| | | | | | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang621010, China
| | - Tao Xian
- College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining810008, China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University, Jishou416000, China
| | | | | | | |
Collapse
|
14
|
Zeng Y, Lv J, Fu H, Wu X, Yang L, Liu W, Yi Z, Liu Q, Hu C, Lv Y, Chu PK, Liu C. HE 1,1 mode excited surface plasmon resonance for high-sensitivity sensing by photonic crystal fibers. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2023; 40:35-44. [PMID: 36607073 DOI: 10.1364/josaa.474692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
Surface plasmon resonance (SPR) is widely used in photonic crystal fiber sensors. In this work, a photonic crystal fiber sensor based on HE1,1 mode excited SPR is designed and analyzed by the finite element method. The maximum wavelength sensitivity, optimal resolution, and amplitude sensitivity of the optical fiber sensor are 24,600 nm/RIU, 4.07×10-6RIU, and 1164.13RIU-1, respectively, for the refractive index range between 1.29 and 1.39. The sensor has excellent properties and wide application prospects in bimolecular and biochemical sensing, environmental monitoring, food safety, and other fields.
Collapse
|
15
|
Wang Y, Sun X, Yi Z, Wu X, Liu G, Pu Z, Yang H. Construction of a Z-scheme Ag 2MoO 4/BiOBr heterojunction for photocatalytically removing organic pollutants. Dalton Trans 2022; 51:18652-18666. [PMID: 36448478 DOI: 10.1039/d2dt03345c] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
How to facilitate photogenerated-carrier separation is an important step in developing excellent semiconductor photocatalysts for environmental pollutant removal. Herein, Ag2MoO4 (AMO) nanoparticles were assembled onto the surface of BiOBr (BOB) nanosheets to construct a highly efficient Z-scheme AMO/BOB heterojunction photocatalyst. Several analytical techniques were used to elucidate the characteristics and photocatalytic mechanism of the AMO/BOB heterojunction. Photodegradation experiments for removing methylene blue under simulated-sunlight irradiation reveal that a 20%AMO/BOB heterojunction exhibits excellent photodegradation activity with η(30 min) = 93.8% and kapp = 0.08638 min-1, which were greater by 4.5 and 5.6 times in comparison with that of pure BOB and AMO, respectively. Based on the experimental and density functional theory (DFT) calculation results, it is proposed that the Z-scheme carrier transfer/separation mechanism dominates the enhanced photodegradation performance of the composite photocatalysts. Additionally, the potential application of AMO/BOB photocatalysts in degrading various organic pollutants (including organic dyes, antibiotics and other serious organic pollutants) was also investigated.
Collapse
Affiliation(s)
- Yanming Wang
- School of Science, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Xiaofeng Sun
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Guorong Liu
- School of Science, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Zhongsheng Pu
- School of Science, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Hua Yang
- School of Science, Lanzhou University of Technology, Lanzhou 730050, China. .,State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
| |
Collapse
|
16
|
Chen C, Wang Y, Yi Z, Wang S, Ma J, Gao H, Wu X, Liu G, Yang H. PH-induced structural evolution, photodegradation mechanism and application of bismuth molybdate photocatalyst. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
17
|
Baranwal AK, Hayase S. Recent Advancements in Tin Halide Perovskite-Based Solar Cells and Thermoelectric Devices. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4055. [PMID: 36432341 PMCID: PMC9694716 DOI: 10.3390/nano12224055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/10/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
The excellent optoelectronic properties of tin halide perovskites (Sn-PVKs) have made them a promising candidate for replacing toxic Pb counterparts. Concurrently, their enormous potential in photon harvesting and thermoelectricity applications has attracted increasing attention. The optoelectronic properties of Sn-PVKs are governed by the flexible nature of SnI6 octahedra, and they exhibit extremely low thermal conductivity. Due to these diverse applications, this review first analyzes the structural properties, optoelectronic properties, defect physics, and thermoelectric properties of Sn-PVKs. Then, recent techniques developed to solve limitations with Sn-PVK-based devices to improve their photoelectric and thermoelectric performance are discussed in detail. Finally, the challenges and prospects for further development of Sn-PVK-based devices are discussed.
Collapse
|
18
|
Wang X, Lin J, Yan Z, Yi Z, Yu J, Zhang W, Qin F, Wu X, Zhang J, Wu P. Tunable high-sensitivity sensing detector based on Bulk Dirac semimetal. RSC Adv 2022; 12:32583-32591. [PMID: 36425681 PMCID: PMC9661490 DOI: 10.1039/d2ra05402g] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/03/2022] [Indexed: 07/30/2023] Open
Abstract
This paper proposes a tunable sensing detector based on Bulk Dirac semimetals (BDS). The bottom-middle-top structure of the detector is a metal-dielectric-Dirac semimetal. The designed detector is simulated in the frequency domain by the finite element method (FEM). And the simulation results indicate that the detector achieves three perfect absorption peaks with absorptivity greater than 99.8% in the range of 2.4-5.2 THz. We analyze the cause of the absorption peak by using random phase approximation theory. The device exhibits good angular insensitivity in different incident angle ranges, and the three absorption peaks can reach 90% absorption rate when the incident angle is in the ranges of 0-60°. And when adjusting the Fermi level of BDS in the ranges of 0.1-0.5 eV, our detector can realize the frequency regulation of the ultra-wide range of 3.90-4.56 THz and realize multi-frequency controllable sensing while maintain the absorption efficiency above 96%. The detector has maximum sensitivity S of 238.0 GHz per RIU when the external environment of the refractive index changes from 1.0 to 1.8, and the maximum detection accuracy is 6.5. The device has broad development prospects in the field of space detection and high-sensitivity biosensing detection.
Collapse
Affiliation(s)
- Xingyu Wang
- Joint Laboratory for Extreme Conditions Matter Properties, Tianfu Institute of Research and Innovation, Key Laboratory of Testing Technology for Manufacturing Process in Ministry of Education, Southwest University of Science and Technology Mianyang 621010 China
- Key Laboratory of Science and Technology on Complex Electromagnetic Environment, China Academy of Engineering Physics Mianyang 621900 China
| | - Jiangchuan Lin
- Key Laboratory of Science and Technology on Complex Electromagnetic Environment, China Academy of Engineering Physics Mianyang 621900 China
| | - Zhiyang Yan
- Key Laboratory of Science and Technology on Complex Electromagnetic Environment, China Academy of Engineering Physics Mianyang 621900 China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Tianfu Institute of Research and Innovation, Key Laboratory of Testing Technology for Manufacturing Process in Ministry of Education, Southwest University of Science and Technology Mianyang 621010 China
| | - Jiaxin Yu
- Joint Laboratory for Extreme Conditions Matter Properties, Tianfu Institute of Research and Innovation, Key Laboratory of Testing Technology for Manufacturing Process in Ministry of Education, Southwest University of Science and Technology Mianyang 621010 China
| | - Wei Zhang
- Joint Laboratory for Extreme Conditions Matter Properties, Tianfu Institute of Research and Innovation, Key Laboratory of Testing Technology for Manufacturing Process in Ministry of Education, Southwest University of Science and Technology Mianyang 621010 China
| | - Feng Qin
- Key Laboratory of Science and Technology on Complex Electromagnetic Environment, China Academy of Engineering Physics Mianyang 621900 China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University Jishou 416000 China
| | - Jianguo Zhang
- Department of Physics and Electronic Engineering, Jinzhong University Jinzhong 030619 China
| | - Pinghui Wu
- Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices, Quanzhou Normal University Quanzhou 362000 China
| |
Collapse
|
19
|
Wang D, Zhu W, Yi Z, Ma G, Gao X, Dai B, Yu Y, Zhou G, Wu P, Liu C. Highly sensitive sensing of a magnetic field and temperature based on two open ring channels SPR-PCF. OPTICS EXPRESS 2022; 30:39055-39067. [PMID: 36258455 DOI: 10.1364/oe.470386] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
A surface plasmon resonance (SPR) sensor comprising photonic crystal fiber (PCF) is designed for magnetic field and temperature dual-parameter sensing. In order to make the SPR detection of magnetic field and temperature effectively, the two open ring channels of the proposed sensor are coated with gold and silver layers and filled with magnetic fluid (MF) and Polydimethylsiloxane (PDMS), respectively. The sensor is analyzed by the finite element method and its mode characteristics, structure parameters and sensing performance are investigated. The analysis reveals when the magnetic field is a range of 40-310 Oe and the temperature is a range of 0-60 °C, the maximum magnetic field sensitivity is 308.3 pm/Oe and temperature sensitivity is 6520 pm/°C. Furthermore, temperature and magnetic field do not crosstalk with each other's SPR peak. Its refractive index sensing performance is also investigated, the maximum sensitivity and FOM of the left channel sensing are 16820 nm/RIU and 1605 RIU-1, that of the right channel sensing are 13320 nm/RIU and 2277 RIU-1. Because of its high sensitivity and special sensing performance, the proposed sensor will have potential application in solving the problems of cross-sensitivity and demodulation due to nonlinear changes in sensitivity of dual-parameter sensing.
Collapse
|
20
|
Li M, Wang G, Gao Y, Gao Y. An Infrared Ultra-Broadband Absorber Based on MIM Structure. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3477. [PMID: 36234605 PMCID: PMC9565646 DOI: 10.3390/nano12193477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 09/30/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
We designed an infrared ultra-broadband metal-insulator-metal (MIM)-based absorber which is composed of a top layer with four different chromium (Cr) nano-rings, an intermediate media of aluminum trioxide (Al2O3), and a bottom layer of tungsten (W). By using the finite-difference time-domain (FDTD), the absorption performance of the absorber was studied theoretically. The results indicate that the average absorption of the absorber can reach 94.84% in the wavelength range of 800-3000 nm. The analysis of the electric and magnetic field indicates that the ultra-broadband absorption rate results from the effect of local surface plasmon resonance (LSPR). After that, the effect of structural parameters, metal and dielectric materials on the absorptivity of the absorber was also discussed. Finally, the effect of incidence angle on absorption was investigated. It was found that it is not sensitive to incidence angle; even when incidence angle is 30°, average absorptivity can reach 90%. The absorber is easy to manufacture and simple in structure, and can be applied in infrared detection and optical imaging.
Collapse
|
21
|
ZHOU W, CHEN BL, XIE LF, LI H, YUAN MY, LIU QQ, YIN JN. Rapid and high sensitive detection of hexavalent chromium based on silver nanowire arrays SERS substrate. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1016/j.cjac.2022.100189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
22
|
Li B, Sun H, Zhang H, Li Y, Zang J, Cao X, Zhu X, Zhao X, Zhang Z. Refractive Index Sensor Based on the Fano Resonance in Metal-Insulator-Metal Waveguides Coupled with a Whistle-Shaped Cavity. MICROMACHINES 2022; 13:1592. [PMID: 36295945 PMCID: PMC9610565 DOI: 10.3390/mi13101592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
A plasmonic refractive index sensor based on surface plasmon polaritons (SPPs) that consist of metal-insulator-metal (MIM) waveguides and a whistle-shaped cavity is proposed. The transmission properties were simulated numerically by using the finite element method. The Fano resonance phenomenon can be observed in their transmission spectra, which is due to the coupling of SPPs between the transmission along the clockwise and anticlockwise directions. The refractive index-sensing properties based on the Fano resonance were investigated by changing the refractive index of the insulator of the MIM waveguide. Modulation of the structural parameters on the Fano resonance and the optics transmission properties of the coupled structure of two MIM waveguides with a whistle-shaped cavity were designed and evaluated. The results of this study will help in the design of new photonic devices and micro-sensors with high sensitivity, and can serve as a guide for future application of this structure.
Collapse
Affiliation(s)
- Bo Li
- School of Software, North University of China, Taiyuan 030051, China
- Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
| | - Huarong Sun
- Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
| | - Huinan Zhang
- Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
| | - Yuetang Li
- Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
| | - Junbin Zang
- Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
| | - Xiyuan Cao
- Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
| | - Xupeng Zhu
- School of Physical Science and Technology, Lingnan Normal University, Zhanjiang 524048, China
| | - Xiaolong Zhao
- School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China
| | - Zhidong Zhang
- Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
| |
Collapse
|
23
|
Zhou Y, Li L, He Z, Wang Y, Cui W, Yang Z, Lu S, Wu X, Bai L. Field Enhancement for the Composite MXene/Black Phosphorus-Based Metasurface. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3155. [PMID: 36144943 PMCID: PMC9505287 DOI: 10.3390/nano12183155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/05/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
Both MXene and black phosphorus (BP), which actg as hot two-dimensional (2D) materials, have unique optical properties and important applications for nano-micro optical devices. Here, a composite MXene/BP-based metasurface, consisting of Ti3C2Tx and BP layers, is proposed for investigating the optical responses and electric field by using the finite-difference time-domain numerical simulation method in the microwave band. The research results show that the Fano resonance-like spectra can be observed when the coupling of surface plasmons (SPs) on the BP and MXene layers appears. Furthermore, the field enhancement, based on the Fano resonance-like optical responses, can be improved by an order of magnitude through adjusting the structural parameters and the polarization direction of incident light for the proposed metasurface. The findings may provide important theoretical insights into the design and realization of high-performance plasmonic devices.
Collapse
Affiliation(s)
- Yihui Zhou
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| | - Lingqiao Li
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| | - Zhihui He
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| | - Yixuan Wang
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
- School of Chemistry and Chemical Engineering, Yan’an University, Yan’an 716000, China
| | - Wei Cui
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| | - Zhimin Yang
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| | - Shaojun Lu
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| | - Xiongxiong Wu
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| | - Lang Bai
- School of Physics and Electronic Information, Innovation Team of Smart Metamaterials for Weak Signal Detection, Yan’an University, Yan’an 716000, China
| |
Collapse
|
24
|
Yang J, Petrescu FIT, Li Y, Song D, Shi G. A Novel Bio-Inspired Ag/3D-TiO 2/Si SERS Substrate with Ordered Moth-like Structure. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3127. [PMID: 36144914 PMCID: PMC9501013 DOI: 10.3390/nano12183127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/27/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023]
Abstract
This paper reports a novel method to fabricate a bio-inspired SERS substrate with low reflectivity, ultra-sensitivity, excellent uniformity, and recyclability. First, double layers of polystyrene spheres with different particle sizes were assembled on the surface of a silicon wafer to act as a moth-like template. Second, through the template sacrifice method, the TiO2 film with a three-dimensional moth-like eye structure was induced by the double-layer polystyrene spheres in the previous step, and its microscopic morphology showed a high degree of order. Finally, Ag nanoparticles were assembled on the TiO2 film to form a bio-inspired SERS substrate. This ordered bio-inspired structure can not only reduce reflection, but also reinforce the uniformity of hotspot density, which helps to improve the sensitivity and uniformity of the Raman signal. This bio-inspired SERS substrate can detect R6G molecules at a concentration as low as 1.0 × 10-10 mol/L, and its enhancement factor (EF) can reach 6.56 × 106. In addition, the composite of Ag and TiO2 can realize the photocatalytic degradation of R6G and then realize the recyclability of the SERS substrate.
Collapse
Affiliation(s)
- Jingguo Yang
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | | | - Ying Li
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Dandan Song
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Gang Shi
- Key Laboratory of Synthetic and Biotechnology Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| |
Collapse
|
25
|
Wang Y, Xuan X, Wu S, Zhu L, Zhu J, Shen X, Zhang Z, Hu C. Reverse design of metamaterial absorbers based on an equivalent circuit. Phys Chem Chem Phys 2022; 24:20390-20399. [PMID: 35983852 DOI: 10.1039/d2cp01626e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a reverse design method useful for designing and analyzing metamaterial absorbers; we demonstrate its power by designing both a narrowband absorber and a wideband absorber. The method determines the structure of the absorber using an equivalent-circuit model. The narrowband metamaterial absorber structures were based on the equivalent-circuit model, and the narrowband metamaterial absorber designed using the method has an absorption fraction greater than 90% in a bandwidth of 500 nm centered at about 1450 nm. In order to extend the absorption bandwidth for the absorber, the narrowband absorber structure is adjusted based on the equivalent-circuit model, and the broadband metamaterial absorber structure is investigated. The numerical results show that the absorption bandwidth is substantially increased; the absorbance is greater than 90% for a band nearly reaching the limits of our experiment, from about 400 nm (near-ultraviolet) to about 2800 nm (deep infrared). The absorption spectrum of the wideband absorber is more sensitive to the angle of incident polarization due to the asymmetric structure, but the whole band shows polarization independence. For a large angle of 60° (TM polarization) oblique incidence, the average absorption of the broadband metamaterial absorber reaches 81%. The physical mechanism of the wideband high absorption is analyzed, which is mainly caused by Fabry-Perot resonance, surface plasmon resonance, local surface plasmon resonance, and the hybrid coupling among them. Our proposed design with high-broadband absorption has significant potential for thermoelectric and thermal emitters, solar thermal energy harvesting, and invisible device applications.
Collapse
Affiliation(s)
- Yang Wang
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China.
| | - Xuefei Xuan
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China.
| | - Shenbing Wu
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China.
| | - Lu Zhu
- School of Information Engineering, East China Jiaotong University, Nanchang 330013, China.
| | - Jiabing Zhu
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China.
| | - Xiaobo Shen
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China.
| | - Zhipeng Zhang
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China.
| | - Changjun Hu
- School of Electronic Engineering, Huainan Normal University, Huainan 232000, China.
| |
Collapse
|
26
|
Wang D, Yi Z, Ma G, Dai B, Yang J, Zhang J, Yu Y, Liu C, Wu X, Bian Q. Two-channel photonic crystal fiber based on surface plasmon resonance for magnetic field and temperature dual-parameter sensing. Phys Chem Chem Phys 2022; 24:21233-21241. [PMID: 36040374 DOI: 10.1039/d2cp02778j] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, a dual-parameter sensor based on surface plasmon resonance (SPR)-photonic crystal fiber (PCF) is proposed, which can be applied in detecting the magnetic field and temperature. In this sensor, two elliptical channels are designed on both sides of the fiber core. The left channel (Ch 1) is coated with gold film and filled with magnetic fluid (MF) to achieve a response to the magnetic field and temperature using SPR. The right channel (Ch 2) is coated with gold film as well as Ta2O5 film to improve the SPR sensing performance. Finally, Ch 2 is filled with polydimethylsiloxane (PDMS) to achieve a response to the temperature. The mode characteristics, structural parameters and sensing performance are investigated by the finite element method. The results show that when the magnetic field is in the range of 50-130 Oe, the magnetic field sensitivities of Ch 1 and Ch 2 are 65 pm Oe-1 and 0 pm Oe-1, respectively. When the temperature is in the range of 17.5-27.5 °C, the temperature sensitivities of Ch 1 and Ch 2 are 520 pm °C-1 and 2360 pm °C-1, respectively. By establishing and demodulating a sensing matrix, the sensor can not only measure the temperature and magnetic field simultaneously but also solve the temperature cross-sensitivity problem. In addition, when the temperature exceeds a certain value, the proposed sensor is expected to achieve dual-parameter sensing without a matrix. The proposed dual-parameter SPR-PCF sensor has a unique structure and excellent sensing performance, which are important for the simultaneous sensing of multiple basic physical parameters.
Collapse
Affiliation(s)
- Dongying Wang
- Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Guolu Ma
- Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Bo Dai
- Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Junbo Yang
- College of Liberal Arts and Sciences, Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha 410073, China.
| | - Jianfa Zhang
- College of Liberal Arts and Sciences, Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha 410073, China.
| | - Yang Yu
- College of Liberal Arts and Sciences, Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha 410073, China. .,State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem And Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Chao Liu
- School of Physics and Electronics Engineering, Northeast Petroleum University, Daqing 163318, China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Qiang Bian
- Institute for Measurement and Sensor Technology, Technical University of Munich, Munich 80333, Germany
| |
Collapse
|
27
|
Shangguan Q, Chen Z, Yang H, Cheng S, Yang W, Yi Z, Wu X, Wang S, Yi Y, Wu P. Design of Ultra-Narrow Band Graphene Refractive Index Sensor. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22176483. [PMID: 36080942 PMCID: PMC9460058 DOI: 10.3390/s22176483] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/23/2022] [Accepted: 08/26/2022] [Indexed: 05/27/2023]
Abstract
The paper proposes an ultra-narrow band graphene refractive index sensor, consisting of a patterned graphene layer on the top, a dielectric layer of SiO2 in the middle, and a bottom Au layer. The absorption sensor achieves the absorption efficiency of 99.41% and 99.22% at 5.664 THz and 8.062 THz, with the absorption bandwidths 0.0171 THz and 0.0152 THz, respectively. Compared with noble metal absorbers, our graphene absorber can achieve tunability by adjusting the Fermi level and relaxation time of the graphene layer with the geometry of the absorber unchanged, which greatly saves the manufacturing cost. The results show that the sensor has the properties of polarization-independence and large-angle insensitivity due to the symmetric structure. In addition, the practical application of testing the content of hemoglobin biomolecules was conducted, the frequency of first resonance mode shows a shift of 0.017 THz, and the second resonance mode has a shift of 0.016 THz, demonstrating the good frequency sensitivity of our sensor. The S (sensitivities) of the sensor were calculated at 875 GHz/RIU and 775 GHz/RIU, and quality factors FOM (Figure of Merit) are 26.51 and 18.90, respectively; and the minimum limit of detection is 0.04. By comparing with previous similar sensors, our sensor has better sensing performance, which can be applied to photon detection in the terahertz band, biochemical sensing, and other fields.
Collapse
Affiliation(s)
- Qianyi Shangguan
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China
| | - Zihao Chen
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Hua Yang
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
| | - Shubo Cheng
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China
| | - Wenxing Yang
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Shifa Wang
- School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing 404000, China
| | - Yougen Yi
- College of Physics and Electronics, Central South University, Changsha 410083, China
| | - Pinghui Wu
- Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Quanzhou Normal University, Quanzhou 362000, China
| |
Collapse
|
28
|
Cao M, Wang J, Yuen MMF, Yan D. Realization of Multifunctional Metamaterial Structure Based on the Combination of Vanadium Dioxide and Graphene. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2883. [PMID: 36014748 PMCID: PMC9413590 DOI: 10.3390/nano12162883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/16/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Combining tunable properties and various functionalities into a single metamaterial structure has become a novel research hotspot and can be used to tackle great challenges. The multifunctional metamaterial structure that combines absorption, linear-to-circular (LTC) polarization conversion, filtering and switching functions into a single metamaterial device was designed and investigated in this study. The switching of different functions can be achieved based on the phase transition of vanadium dioxide (VO2) and change of graphene chemical potential. When VO2 is in a metal state, the multi-frequency absorption and LTC polarization conversion can be achieved with different chemical potentials. When VO2 is in the insulator state and the polarization angle of incident wave is 45°, the device can be used to select or isolate the incident waves with different polarization states in the frequency region of 1.2-1.8 THz. Furthermore, when the chemical potentials are 0.05 eV and 1.2 eV, the corresponding transmissions of the TE-polarized wave demonstrate the opposite results, realizing the switching functions in the frequency region of 0.88-1.34 THz. In the frequency region above 2 THz, the multi-frequency rejection filter can be achieved. The designed switchable multifunctional metamaterial device can be widely implemented in radar monitoring and communication systems.
Collapse
Affiliation(s)
- Mingxuan Cao
- Department of Intelligent Manufacturing, Wuyi University, Jiangmen 529020, China
| | - Junchao Wang
- Department of Intelligent Manufacturing, Wuyi University, Jiangmen 529020, China
| | - Matthew M. F. Yuen
- Department of Mechanical Engineering, Hong Kong University of Science and Technology, Hong Kong 999077, China
| | - Dexian Yan
- Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou 310018, China
| |
Collapse
|
29
|
Wang D, Yu Y, Lu Z, Yang J, Yi Z, Bian Q, Zhang J, Qin S, Weng J, Yao S, Lu Y, Hu X, Meng Z. Design of photonic crystal fiber to excite surface plasmon resonance for highly sensitive magnetic field sensing. OPTICS EXPRESS 2022; 30:29271-29286. [PMID: 36299105 DOI: 10.1364/oe.459088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/09/2022] [Indexed: 06/16/2023]
Abstract
To improve the sensing performance of optical fiber magnetic field sensor based on magneto-refractive effect, a D-shaped photonic crystal fiber-surface plasmon resonance (PCF-SPR) sensor based on magneto-refractive effect is proposed and its magnetic field sensing characteristics are investigated. The designed D-shaped PCF has a core-analyte-gold structure. Within the D-shaped PCF, the side polishing surface is coated with the gold film and the special hole is sandwiched between the core and the gold film. To realize the high magnetic field sensitivity for the fiber SPR magnetic field sensor, the special hole is filled with magnetic fluid (MF). In this paper, we analyze the mode transmission characteristics and magnetic field sensing characteristics of this fiber sensor by finite element method. We also obtain a general rule for the optimization of PCF-SPR sensors by analyzing the dispersion curves, the energy of the surface plasmon polariton mode and the core mode on the sensing performance of the designed fiber sensor. The maximum refractive index sensitivity and magnetic field sensitivity of the optimized fiber are 59714.3 nm/RIU and 21750 pm/mT (50-130 Oe), respectively. Compared with optical fiber magnetic field sensors based on magneto-refractive effect reported previously, the magnetic field sensitivity in this paper is nearly two orders of magnitude higher and it can initially achieve nT magnitude magnetic field resolution and testing capability. The proposed fiber sensor has the advantages of simple structure, easy production, high sensitivity, and strong environmental adaptability. It not only improves the sensing performance of optical fiber magnetic field sensors, but also provides an ideal alternative platform for biosensors like microfluidics because of its high refractive index sensitivity and the special structure.
Collapse
|
30
|
Wu P, Qu S, Zeng X, Su N, Chen M, Yu Y. High- Q refractive index sensors based on all-dielectric metasurfaces. RSC Adv 2022; 12:21264-21269. [PMID: 35975043 PMCID: PMC9344899 DOI: 10.1039/d2ra02176e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
Possessing fantastic abilities to freely manipulate electromagnetic waves on an ultrathin platform, metasurfaces have aroused intense interest in the academic circle. In this work, we present a high-sensitivity refractive index sensor excited by the guided mode of a two-dimensional periodic TiO2 dielectric grating structure. Numerical simulation results show that the optimized nanosensor can excite guided-mode resonance with an ultra-narrow linewidth of 0.19 nm. When the thickness of the biological layer is 20 nm, the sensitivity, Q factor, and FOM values of the nanosensor can reach 82.29 nm RIU−1, 3207.9, and 433.1, respectively. In addition, the device shows insensitivity to polarization and good tolerance to the angle of incident light. This demonstrates that the utilization of low-loss all-dielectric metasurfaces is an effective way to achieve ultra-sensitive biosensor detection. A high-sensitivity refractive index sensor excited by the 2D periodic TiO2 dielectric grating structure. The nanosensor can excite guided-mode resonance with a 0.19 nm ultra-narrow linewidth. Low loss all-dielectric metasurface allows ultra-sensitive biosensor detection.![]()
Collapse
Affiliation(s)
- Pinghui Wu
- Research Center for Photonic Technology, Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices & Key Laboratory of Information Functional Material for Fujian Higher Education, Quanzhou Normal University Quanzhou 362000 China
| | - Shuangcao Qu
- Research Center for Photonic Technology, Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices & Key Laboratory of Information Functional Material for Fujian Higher Education, Quanzhou Normal University Quanzhou 362000 China
| | - Xintao Zeng
- Research Center for Photonic Technology, Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices & Key Laboratory of Information Functional Material for Fujian Higher Education, Quanzhou Normal University Quanzhou 362000 China
| | - Ning Su
- Research Center for Photonic Technology, Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices & Key Laboratory of Information Functional Material for Fujian Higher Education, Quanzhou Normal University Quanzhou 362000 China
| | - Musheng Chen
- Research Center for Photonic Technology, Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices & Key Laboratory of Information Functional Material for Fujian Higher Education, Quanzhou Normal University Quanzhou 362000 China
| | - Yanzhong Yu
- Research Center for Photonic Technology, Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices & Key Laboratory of Information Functional Material for Fujian Higher Education, Quanzhou Normal University Quanzhou 362000 China
| |
Collapse
|
31
|
Frequency Scanning Dual-Mode Asymmetric Dual-OAM-Wave Generation Base on Broadband PB Metasurface. MICROMACHINES 2022; 13:mi13071117. [PMID: 35888934 PMCID: PMC9315772 DOI: 10.3390/mi13071117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/13/2022] [Accepted: 07/13/2022] [Indexed: 12/10/2022]
Abstract
Increasing information capacity is significant for high-speed communication systems in a congested radio frequency sequence. Vortex waves carrying mode orthogonal orbital angular momentum (OAM) have gained considerable attention in recent years, owing to their multiplexing quality. In this study, a broadband Pancharatnam-Berry (PB) metasurface element with a simple structure is proposed, which exhibits an efficient reflection of the co-polarized component and a full 2π phase variation in 10.5-21.5 GHz under circularly polarized wave incidence. By convolution and addition operations, the elaborate phase distribution is arranged and the corresponding metasurface-reflecting dual-mode asymmetric dual-OAM waves is constructed. Under continuous control of the working frequency, the OAM vortex beams with the topological charges 1 and -1 are steered to scan within the angle range of 11.9°-24.9° and 17.9°-39.1° at φ = 315° and 135° planes, respectively. The simulation and measurement results verified the feasibility of generating frequency-controlled asymmetric dual beams and the validity of dual-mode OAM characteristics, both in the near and far fields. This design approach has considerable potential in OAM wave multiplexing and wireless communication system transmission.
Collapse
|
32
|
Perfect Absorption of Fan-Shaped Graphene Absorbers with Good Adjustability in the Mid-Infrared. COATINGS 2022. [DOI: 10.3390/coatings12070990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This paper presents a graphene metamaterial absorber based on impedance matching. A finite difference in time domain (FDTD) method is used to achieve a theoretically perfect absorption in the mid-infrared band. A basis is created for the multiband stable high absorption of graphene in the mid-infrared. The designed graphene absorber is composed of graphene, a dielectric layer, a gold plane, and a silicon substrate, separately. The incident source of mid-infrared can be utilized to stimulate multiband resonance absorption peaks from 2.55 to 4.15 μm. The simulation results show that the absorber has three perfect resonance peaks exceeding 99% at λ1 = 2.67 μm, λ2 = 2.87 μm, and λ3 = 3.68 μm, which achieve an absorption efficiency of 99.67%, 99.61%, and 99.40%, respectively. Furthermore, the absorber maintains an excellent performance with a wide incident angle range of 0°–45°, and it also keeps the insensitive characteristic to transverse electric wave (TE) and transverse magnetic wave (TM). The results above indicate that our perfect graphene absorber, with its tunability and wide adaptability, has many potential applications in the fields of biosensing, photodetection, and photocell.
Collapse
|
33
|
Li L, Gao H, Yi Z, Wang S, Wu X, Li R, Yang H. Comparative investigation on synthesis, morphological tailoring and photocatalytic activities of Bi2O2CO3 nanostructures. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128758] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
34
|
Metamaterial Solar Absorber Based on Refractory Metal Titanium and Its Compound. COATINGS 2022. [DOI: 10.3390/coatings12070929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Metamaterials refers to a class of artificial materials with special properties. Through its unique geometry and the small size of each unit, the material can acquire unique electromagnetic field properties that conventional materials do not have. Based on these factors, we put forward a kind of high absorption near-ultraviolet to near-infrared electromagnetic wave absorber of the solar energy. The surface structure of the designed absorber is composed of TiN-TiO2-Al2O3 with rectangles and disks, and the substrate is Ti-Al2O3-Ti layer. In the study band range (0.1–3.0 μm), the solar absorber’s average absorption is up to 96.32%, and the designed absorber absorbs more than 90% of the electromagnetic wave with a wavelength width of 2.577 μm (0.413–2.990 μm). Meanwhile, the designed solar absorber has good performance under different angles of oblique incident light. Ultra-wideband solar absorbers have great potential in light absorption related applicaitions because of their wide spectrum high absorption properites.
Collapse
|
35
|
Mao Y, Wang J, Sun S, He M, Tian S, Liang E. Plasmon mode manipulation based on multi-layer hyperbolic metamaterials. OPTICS EXPRESS 2022; 30:22353-22363. [PMID: 36224934 DOI: 10.1364/oe.457014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/20/2022] [Indexed: 06/16/2023]
Abstract
Metamaterial with hyperbolic dispersion properties can effectively manipulate plasmonic resonances. Here, we designed a hyperbolic metamaterial (HMM) substrate with a near-zero dielectric constant in the near-infrared region to manipulate the plasmon resonance of the nano-antenna (NA). For NA arrays, tuning the equivalent permittivity of HMM substrate by modifying the thickness of Au/diamond, the wavelength range of plasmon resonance can be manipulated. When the size of the NA changes within a certain range, the spectral position of the plasmon resonance will be fixed in a narrow band close to the epsilon-near-zero (ENZ) wavelength and produce a phenomenon similar to "pinning effect." In addition, since the volume plasmon polaritons (VPP) mode is excited, it will couple with the localized surface plasmon (LSP) mode to generate a spectrum splitting. Therefore, the plasmon resonance is significantly affected and can be precisely controlled by designing the HMM substrate.
Collapse
|
36
|
Xu M, Guo L, Zhang P, Qiu Y, Li Q, Wang J. Near-perfect spectrally-selective metasurface solar absorber based on tungsten octagonal prism array. RSC Adv 2022; 12:16823-16834. [PMID: 35754914 PMCID: PMC9172566 DOI: 10.1039/d2ra02802f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 05/30/2022] [Indexed: 11/21/2022] Open
Abstract
Solar selective absorbers influence the photothermal efficiency of high-temperature solar thermal applications directly and significantly. In present work, a metasurface absorber consisting of an octagonal prism array is proposed, optimized and analyzed. Firstly, the structure parameters of the absorber are optimized, finding the optimal absorber achieves near-perfect spectrally-selectivity compared with the perfect solar absorber. The high solar absorptivity of 0.9591, low emissivity of 0.1594–0.3694, and high photothermal efficiency of 94.72–83.10% are achieved at 1073–1573 K and 1000 suns. Then, the mechanisms leading to the excellent spectral selectivity are investigated, suggesting that the coupling effects of multi-plasmon resonance modes and the impedance matching lead to the high solar absorptivity. Meanwhile, the impedance mismatching is the mechanism to minimize the emissivity in the mid-IR region. Moreover, whether the spectral absorptivity can be changed by structural parameters is investigated, suggesting that the excircle diameter of the first tungsten octagonal prism and the height of SiO2 under the octagonal prism can influence the spectral absorptivity obviously. Finally, the metasurface absorber is demonstrated to be highly insensitive to both polarization and incident angles. These results suggest that the proposed metasurface absorber should be suitable for high-temperature solar thermal devices. A metamaterial absorber that can achieve near-perfect spectral selectivity with simple structure is proposed for high-temperature solar energy harvesting.![]()
Collapse
Affiliation(s)
- Mingpan Xu
- School of Energy Science and Engineering, Central South University Changsha Hunan 410083 China
| | - Lin Guo
- Energy Research Institute, Qilu University of Technology Jinan 250014 P. R. China
| | - Pengfei Zhang
- School of Energy Science and Engineering, Central South University Changsha Hunan 410083 China
| | - Yu Qiu
- School of Energy Science and Engineering, Central South University Changsha Hunan 410083 China
| | - Qing Li
- School of Energy Science and Engineering, Central South University Changsha Hunan 410083 China
| | - Jikang Wang
- School of Energy Science and Engineering, Central South University Changsha Hunan 410083 China
| |
Collapse
|
37
|
High-Property Refractive Index and Bio-Sensing Dual-Purpose Sensor Based on SPPs. MICROMACHINES 2022; 13:mi13060846. [PMID: 35744460 PMCID: PMC9231242 DOI: 10.3390/mi13060846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 05/25/2022] [Accepted: 05/25/2022] [Indexed: 02/05/2023]
Abstract
A high-property plasma resonance-sensor structure consisting of two metal-insulator-metal (MIM) waveguides coupled with a transverse ladder-shaped nano-cavity (TLSNC) is designed based on surface plasmon polaritons. Its transmission characteristics are analyzed using multimode interference coupling mode theory (MICMT), and are simulated using finite element analysis (FEA). Meanwhile, the influence of different structural arguments on the performance of the structure is investigated. This study shows that the system presents four high-quality formants in the transmission spectrum. The highest sensitivity is 3000 nm/RIU with a high FOM* of 9.7 × 105. In addition, the proposed structure could act as a biosensor to detect the concentrations of sodium ions (Na+), potassium ions (K+), and the glucose solution with maximum sensitivities of 0.45, 0.625 and 5.5 nm/mgdL−1, respectively. Compared with other structures, the designed system has the advantages of a simple construction, a wide working band range, high reliability and easy nano-scale integration, providing a high-performance cavity choice for refractive index sensing and biosensing devices based on surface plasmons.
Collapse
|
38
|
Zhao Q, Liu J, Yang H, Liu H, Zeng G, Huang B. High Birefringence D-Shaped Germanium-Doped Photonic Crystal Fiber Sensor. MICROMACHINES 2022; 13:826. [PMID: 35744440 PMCID: PMC9231219 DOI: 10.3390/mi13060826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/19/2022] [Accepted: 05/24/2022] [Indexed: 02/06/2023]
Abstract
In this work, a surface plasmon resonance (SPR) sensor based on a D-shaped germanium-doped photonic crystal fiber (PCF) is proposed. The finite element method (FEM) is introduced to analyze the structure parameters, such as germanium-doped concentration, lattice pitch, and air hole size. In addition, the coupling properties and birefringence properties of PCF are also studied. The computer simulation results indicate that two different surface plasmon polariton (SPP) coupling modes are produced on the polished surface, covered with metal film, when the analyte refractive index (RI) is 1.34. Then, with the increase of the RI, the incompleteness of one of the coupling modes will be transformed into the complete coupling. The effect of germanium concentration on the birefringence is also analyzed. It has an optimal wavelength sensitivity of 5600 nm/RIU when the RI is 1.37. This sensor exhibits a maximum birefringence of 1.06 × 10-2 and a resolution of 1.78 × 10-5 RIU with high linearity.
Collapse
Affiliation(s)
- Qianhe Zhao
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; (Q.Z.); (H.L.); (G.Z.); (B.H.)
| | - Jin Liu
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; (Q.Z.); (H.L.); (G.Z.); (B.H.)
| | - Haima Yang
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
| | - Haishan Liu
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; (Q.Z.); (H.L.); (G.Z.); (B.H.)
| | - Guohui Zeng
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; (Q.Z.); (H.L.); (G.Z.); (B.H.)
| | - Bo Huang
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; (Q.Z.); (H.L.); (G.Z.); (B.H.)
| |
Collapse
|
39
|
Xue Z, Yu Q, Zhong N, Zeng T, Tang H, Zhao M, Zhao Y, Tang B. Fiber optic sensor for nondestructive detection of microbial growth on a silk surface. APPLIED OPTICS 2022; 61:4463-4470. [PMID: 36256285 DOI: 10.1364/ao.456918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/27/2022] [Indexed: 06/16/2023]
Abstract
To nondestructively detect the mold growth process on silk, a coaxial concave reflection conical fiber optic sensor was developed using conical quartz fibers, fiber connectors, fiber couplers, and a plastic fixator. We established a theoretical model of this sensor and studied the influence of its structural parameters on its sensitivity, characterized the morphology of Aspergillus niger, and detected its growth process on a silk surface. A linear relationship between the sensor's output signal and the mold height was found. The sensor sensitivity, maximum detection error, and low limit of detection were 2.4 E-5 AU/µm, 7.83%, and 10 µm, respectively.
Collapse
|
40
|
Abstract
We propose a sub-wavelength range-based dual-band tunable ideal terahertz metamaterial perfect absorber. The absorber structure consists of three main layers, with the absorber layer consisting of a metal I-shaped structure. By simulating the incident wave absorbance of the structure, we found that the structure has more than 99% absorption peaks in both bands. In addition, we have investigated the relationship between structural absorbance and the structural geometrical parameters. We have studied the relationship between the thickness of the metal absorber layer hb and the absorbance of the metamaterial structure in the 4–14 THz band. Secondly, we have studied the relationship between the thickness of the SiO2 dielectric layer and structural absorbance. Afterwards, we have studied the relationship between the incident angle of the incident electromagnetic wave and structural absorbance. Finally, we have studied the relationship between the length of the metal structure and structural absorbance. The structure can be effectively used for detectors, thermal emitters, terahertz imaging and detection.
Collapse
|
41
|
Tunable Narrow-Band Filter Based on Long-Range Surface Plasmon Polariton Waveguide Bragg Grating. PHOTONICS 2022. [DOI: 10.3390/photonics9050344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A narrow-band Bragg grating filter based on a long-range surface plasmon polariton (LRSPP) waveguide is theoretically demonstrated. The three-dimensional Au stripe that is embedded in polymer SU-8 acts as both the waveguide and the heating electrode. With the eigen mode expansion and finite element method optimizations, the proposed filter shows a reflectivity of 0.578 and a 3 dB bandwidth of 1.1 nm. The central wavelength can be tuned from 1549.9 nm to 1544.3 nm by varying temperature from 25 °C to 75 °C, while maintaining the optical return loss at −2.5 dB. This proposed tunable filter has potential in on-chip light signal processing.
Collapse
|
42
|
A Review: The Functional Materials-Assisted Terahertz Metamaterial Absorbers and Polarization Converters. PHOTONICS 2022. [DOI: 10.3390/photonics9050335] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
When metamaterial structures meet functional materials, what will happen? The recent rise of the combination of metamaterial structures and functional materials opens new opportunities for dynamic manipulation of terahertz wave. The optical responses of functional materials are greatly improved based on the highly-localized structures in metamaterials, and the properties of metamaterials can in turn be manipulated in a wide dynamic range based on the external stimulation. In the topical review, we summarize the recent progress of the functional materials-based metamaterial structures for flexible control of the terahertz absorption and polarization conversion. The reviewed devices include but are not limited to terahertz metamaterial absorbers with different characteristics, polarization converters, wave plates, and so on. We review the dynamical tunable metamaterial structures based on the combination with functional materials such as graphene, vanadium dioxide (VO2) and Dirac semimetal (DSM) under various external stimulation. The faced challenges and future prospects of the related researches will also be discussed in the end.
Collapse
|
43
|
Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator. MICROMACHINES 2022; 13:mi13050750. [PMID: 35630217 PMCID: PMC9144545 DOI: 10.3390/mi13050750] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/06/2022] [Accepted: 05/07/2022] [Indexed: 02/04/2023]
Abstract
In this study, a novel refractive index sensor structure was designed consisting of a metal-insulator-metal (MIM) waveguide with two rectangular baffles and a U-Shaped Ring Resonator (USRR). The finite element method was used to theoretically investigate the sensor’s transmission characteristics. The simulation results show that Fano resonance is a sharp asymmetric resonance generated by the interaction between the discrete narrow-band mode and the successive wide-band mode. Next, the formation of broadband and narrowband is further studied, and finally the key factors affecting the performance of the sensor are obtained. The best sensitivity of this refractive-index sensor is 2020 nm/RIU and the figure of merit (FOM) is 53.16. The presented sensor has the potential to be useful in nanophotonic sensing applications.
Collapse
|
44
|
Elrashidi A, Elleithy K. High-Efficiency Crystalline Silicon-Based Solar Cells Using Textured TiO2 Layer and Plasmonic Nanoparticles. NANOMATERIALS 2022; 12:nano12091589. [PMID: 35564297 PMCID: PMC9103934 DOI: 10.3390/nano12091589] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/30/2022] [Accepted: 05/05/2022] [Indexed: 02/01/2023]
Abstract
A high-efficiency crystalline silicon-based solar cell in the visible and near-infrared regions is introduced in this paper. A textured TiO2 layer grown on top of the active silicon layer and a back reflector with gratings are used to enhance the solar cell performance. The given structure is simulated using the finite difference time domain (FDTD) method to determine the solar cell’s performance. The simulation toolbox calculates the short circuit current density by solving Maxwell’s equation, and the open-circuit voltage will be calculated numerically according to the material parameters. Hence, each simulation process calculates the fill factor and power conversion efficiency numerically. The optimization of the crystalline silicon active layer thickness and the dimensions of the back reflector grating are given in this work. The grating period structure of the Al back reflector is covered with a graphene layer to improve the absorption of the solar cell, where the periodicity, height, and width of the gratings are optimized. Furthermore, the optimum height of the textured TiO2 layer is simulated to produce the maximum efficiency using light absorption and short circuit current density. In addition, plasmonic nanoparticles are distributed on the textured surface to enhance the light absorption, with different radii, with radius 50, 75, 100, and 125 nm. The absorbed light energy for different nanoparticle materials, Au, Ag, Al, and Cu, are simulated and compared to determine the best performance. The obtained short circuit current density is 61.9 ma/cm2, open-circuit voltage is 0.6 V, fill factor is 0.83, and the power conversion efficiency is 30.6%. The proposed crystalline silicon solar cell improves the short circuit current density by almost 89% and the power conversion efficiency by almost 34%.
Collapse
Affiliation(s)
- Ali Elrashidi
- Department of Electrical Engineering, University of Business and Technology, Jeddah 21432, Saudi Arabia
- Department of Engineering Physics, Alexandria University, Alexandria 21544, Egypt
- Correspondence:
| | - Khaled Elleithy
- Department of Computer Science and Engineering, University of Bridgeport, 221 University Ave, Bridgeport, CT 06604, USA;
| |
Collapse
|
45
|
Grating Structure Broadband Absorber Based on Gallium Arsenide and Titanium. COATINGS 2022. [DOI: 10.3390/coatings12050588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
We designed a broadband absorber based on a multilayer grating structure composed of gallium arsenide and titanium. The basic unit is a grating structure stacked on top of a semiconductor of gallium arsenide and titanium metal. We used the finite difference time domain method to simulate the designed model and found that the absorber absorption efficiency exceeded 90% in the range from 736 nm to 3171 nm. The absorption efficiency near perfect absorption at 867 nm was 99.69%. The structure had good angle insensitivity, and could maintain good absorption under both the TE mode and TM mode polarized light when the incident angle of the light source changed from 0° to 50°. This kind of metamaterial grating perfect absorber is expected to be widely used in optical fields such as infrared detection, optical sensing, and thermal electronics.
Collapse
|
46
|
Ultra-Narrowband Anisotropic Perfect Absorber Based on α-MoO 3 Metamaterials in the Visible Light Region. NANOMATERIALS 2022; 12:nano12081375. [PMID: 35458082 PMCID: PMC9025360 DOI: 10.3390/nano12081375] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/13/2022] [Accepted: 04/15/2022] [Indexed: 02/05/2023]
Abstract
Optically anisotropic materials show important advantages in constructing polarization-dependent optical devices. Very recently, a new type of two-dimensional van der Waals (vdW) material, known as α-phase molybdenum trioxide (α-MoO3), has sparked considerable interest owing to its highly anisotropic characteristics. In this work, we theoretically present an anisotropic metamaterial absorber composed of α-MoO3 rings and dielectric layer stacking on a metallic mirror. The designed absorber can exhibit ultra-narrowband perfect absorption for polarizations along [100] and [001] crystalline directions in the visible light region. Plus, the influences of some geometric parameters on the optical absorption spectra are discussed. Meanwhile, the proposed ultra-narrowband anisotropic perfect absorber has an excellent angular tolerance for the case of oblique incidence. Interestingly, the single-band perfect absorption in our proposed metamaterials can be arbitrarily extended to multi-band perfect absorption by adjusting the thickness of dielectric layer. The physical mechanism can be explained by the interference theory in Fabry–Pérot cavity, which is consistent with the numerical simulation. Our research results have some potential applications in designs of anisotropic optical devices with tunable spectrum and selective polarization in the visible light region.
Collapse
|
47
|
Zheng Z, Luo Y, Yang H, Yi Z, Zhang J, Song Q, Yang W, Liu C, Wu X, Wu P. Thermal tuning of terahertz metamaterial absorber properties based on VO 2. Phys Chem Chem Phys 2022; 24:8846-8853. [PMID: 35356962 DOI: 10.1039/d2cp01070d] [Citation(s) in RCA: 71] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We present a novel, structurally simple, multifunctional broadband absorber. It consists of a patterned vanadium dioxide film and a metal plate spaced by a dielectric layer. Temperature control allows flexible adjustment of the absorption intensity from 0 to 0.999. The modulation mechanism of the absorber stems from the thermogenic phase change properties of the vanadium dioxide material. The absorber achieves total reflection properties in the terahertz band when the vanadium dioxide is in the insulated state. When the vanadium dioxide is in its metallic state, the absorber achieves near-perfect absorption in the ultra-broadband range of 3.7 THz-9.7 THz. Impedance matching theory and the analysis of electric field are also used to illustrate the mechanism of operation. Compared to previous reports, our structure utilizes just a single cell structure (3 layers only), and it is easy to process and manufacture. The absorption rate and operating bandwidth of the absorber are also optimised. In addition, the absorber is not only insensitive to polarization, but also very tolerant to the angle of incidence. Such a design would have great potential in wide-ranging applications, including photochemical energy harvesting, stealth devices, thermal emitters, etc.
Collapse
Affiliation(s)
- Zhipeng Zheng
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Yao Luo
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Hua Yang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Jianguo Zhang
- Department of Physics, Jinzhong University, Jinzhong 030619, China.
| | - Qianjv Song
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Wenxing Yang
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei 434023, China
| | - Chao Liu
- School of Physics and Electronics Engineering, Northeast Petroleum University, Daqing 163318, P. R. China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Pinghui Wu
- Fujian Provincial Key Laboratory for Advanced Micro-nano Photonics Technology and Devices, Quanzhou Normal University, Quanzhou 362000, China.
| |
Collapse
|
48
|
Li L, Sun X, Xian T, Gao H, Wang S, Yi Z, Wu X, Yang H. Template-free synthesis of Bi 2O 2CO 3 hierarchical nanotubes self-assembled from ordered nanoplates for promising photocatalytic applications. Phys Chem Chem Phys 2022; 24:8279-8295. [PMID: 35319037 DOI: 10.1039/d1cp05952a] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In this study, we have adopted a one-step hydrothermal route to synthesize an interesting type of Bi2O2CO3 hierarchical nanotubes self-assembled from ordered nanosheets. The effects of reaction time on the morphological and structural evolution, light absorption properties, photoelectrochemical performance, and photocatalytic performance of the prepared hierarchical nanotubes were investigated. Among the products synthesized at different reaction times, the 3-hour-derived Bi2O2CO3 hierarchical nanotubes were identified to possess the highest photocatalytic performance. To promote the photocatalytic application of the as-synthesized Bi2O2CO3 hierarchical nanotubes, their performance was systematically evaluated via the photodegradation of various organic pollutants (e.g., methyl orange (MO), rhodamine B (RhB), methylene blue (MB), ciprofloxacin (CIP), sulfamethoxazole (SMX) and tetracycline hydrochloride (TC)) and the photoreduction of Cr(VI) under simulated-sunlight irradiation. Furthermore, their photocatalytic performance was also evaluated by purifying simulated industrial wastewater (i.e., a MO/RhB/MB mixed solution) at different pH values and containing different inorganic anions. Based on the experimental data and density functional theory (DFT) calculations, the involved photocatalytic mechanism was discussed.
Collapse
Affiliation(s)
- Liexiao Li
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Xiaofeng Sun
- College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining 810008, China
| | - Tao Xian
- College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining 810008, China
| | - Huajing Gao
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Shifa Wang
- School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou 404000, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Hua Yang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.
| |
Collapse
|
49
|
Zhuo S, Zhou F, Liu Y, Liu Z, Zhang X, Luo X, Qin Y, Yang G, Ji C, Zhou Z, Sun L, Liu T. Terahertz multimode modulator based on tunable triple-plasmon-induced transparency in monolayer graphene metamaterials. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2022; 39:594-599. [PMID: 35471382 DOI: 10.1364/josaa.452393] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
A simple monolayer graphene metamaterial based on silicon/silica substrates is proposed, and typical triple-plasmon-induced transparency (PIT) is realized in the terahertz band. The physical mechanism is analyzed by coupled mode theory (CMT), and the results of CMT agree well with the finite-difference time-domain simulation. A multimode electro-optical switch can be designed by dynamic tuning, and the modulation degrees of its resonant frequencies are 84.0%, 87.3%, 83.0%, 88.1%, and 76.7%. In addition, triple-PIT gradually degenerates into dual-PIT with a decrease in the length of one bright mode. Interestingly, the group index can reach 770 at Ef=0.8eV, which shows that it can be designed as a slow light device with extraordinary ability. Therefore, the results of this paper are of great significance to the research and design of electro-optical switches and slow light devices in the terahertz band.
Collapse
|
50
|
Bai S, Hu A, Hu Y, Ma Y, Obata K, Sugioka K. Plasmonic Superstructure Arrays Fabricated by Laser Near-Field Reduction for Wide-Range SERS Analysis of Fluorescent Materials. NANOMATERIALS 2022; 12:nano12060970. [PMID: 35335783 PMCID: PMC8950659 DOI: 10.3390/nano12060970] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/09/2022] [Accepted: 03/13/2022] [Indexed: 12/12/2022]
Abstract
Surface-enhanced Raman scattering (SERS) enables trace-detection for biosensing and environmental monitoring. Optimized enhancement of SERS can be achieved when the energy of the localized surface plasmon resonance (LSPR) is close to the energy of the Raman excitation wavelength. The LSPR can be tuned using a plasmonic superstructure array with controlled periods. In this paper, we develop a new technique based on laser near-field reduction to fabricate a superstructure array, which provides distinct features in the formation of periodic structures with hollow nanoclusters and flexible control of the LSPR in fewer steps than current techniques. Fabrication involves irradiation of a continuous wave laser or femtosecond laser onto a monolayer of self-assembled silica microspheres to grow silver nanoparticles along the silica microsphere surfaces by laser near-field reduction. The LSPR of superstructure array can be flexibly tuned to match the Raman excitation wavelengths from the visible to the infrared regions using different diameters of silica microspheres. The unique nanostructure formed can contribute to an increase in the sensitivity of SERS sensing. The fabricated superstructure array thus offers superior characteristics for the quantitative analysis of fluorescent perfluorooctanoic acid with a wide detection range from 11 ppb to 400 ppm.
Collapse
Affiliation(s)
- Shi Bai
- Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; (S.B.); (K.O.)
| | - Anming Hu
- Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee Knoxville, 1512 Middle Drive, Knoxville, TN 37996, USA;
| | - Youjin Hu
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, 100 Pingle Yuan, Beijing 100124, China;
| | - Ying Ma
- School of Mechanical Engineering & Automation, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China;
| | - Kotaro Obata
- Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; (S.B.); (K.O.)
| | - Koji Sugioka
- Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; (S.B.); (K.O.)
- Correspondence:
| |
Collapse
|