Article
Optics
Xiaocan Xu, Ruijia Xu, Yu-Sheng Lin
Summary: The research proposes a design of tunable double split-ring metamaterial in the terahertz frequency range, demonstrating switchable characteristics between single-resonance and dual-resonance with polarization sensitivity, within the frequency range of 0.16 THz to 0.21 THz. Tunability and stability of DSRM can be achieved by changing the gap between two SRRs or the distance between face-to-face SRRs.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Tao Xu, Xiaocan Xu, Yu-Sheng Lin
Summary: The design of electric split-ring metamaterial (eSRM) with tunable terahertz free spectra range (FSR) characteristic allows stable operation in both TE and TM modes, with the ability to tune and switch electromagnetic responses between dual- and quad-resonance. The eSRM demonstrates sensitivity to polarization angle and can be used for sensing applications exposed to different surrounding refraction index, with a sensitivity of 0.457 THz/RIU and average Q-factor and FOM values of 40.65 and 35.47, respectively.
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
(2021)
Article
Materials Science, Multidisciplinary
Yao Wen, Kunlin Chen, Yu-Sheng Lin
Summary: The study introduces two tunable terahertz metamaterial resonators, TTM-1 and TTM-2, which can modulate resonant frequency by moving the metal frame, with tuning ranges of 0.19 THz and 0.79 THz respectively. The devices also demonstrate anti-inference capability by transversely moving the metal frame.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Altaf Hussain, Jian Dong, Yadgar Abdulkarim, Rigeng Wu, Fahmi F. Muhammadsharif, Ronghua Shi, M. M. R. Howlader
Summary: In this paper, a parallel double-E shaped structure based on double negative (DNG) metamaterial (MTM) was designed and investigated for multiband applications. Numerical simulations using the CST Microwave Studio electromagnetic simulator were performed to obtain the results. The proposed MTM with an 8 x 8 x 1.57 mm³ unit cell dimension and Rogers RT 5880 substrate achieved a high effective medium ratio (EMR) of 15.61. The DNG metamaterial covered multiband frequencies and exhibited three resonance frequencies. Parametric studies were conducted to optimize the design. The proposed structure is highly significant for its small size and ordinary resonator arrangement, making it suitable for various applications such as wireless communications and radar systems.
RESULTS IN PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Binghui Li, Yu-Sheng Lin
Summary: We introduce four types of tunable terahertz metamaterials made of split-ring resonators (SRRs) with different splits and inner movable structures. These designs can achieve different tuning ranges in transverse electric (TE) and transverse magnetic (TM) modes, exhibiting polarization-dependent and polarization-independent characteristics. By increasing the height of the inner movable structure, the resonant frequency of the metamaterials can be tuned. These designs possess anti-vibration and tunable characteristics, which make them potential candidates for high tunability, flexibility, and applicability in THz-wave optoelectronic devices.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Analytical
Angelo Leo, Alessandro Paolo Bramanti, Domenico Giusti, Fabio Quaglia, Giuseppe Maruccio
Summary: This article proposes a novel approach for dynamic microwave modulation using reconfigurable resonant circuits. The approach involves the integration of double split ring resonators (DSRRs) with microelectromechanical actuators (MEMS) for geometrical tuning. Numerical simulations showed a resonance frequency shift of 370 MHz through a 170 μm extrusion driven by a DC voltage. This technology offers potential applications in multiband telecommunications, wireless power transfer, and the IoT field.
Article
Chemistry, Analytical
Wei-Hsi Lai, Binghui Li, Shih-Huai Fu, Yu-Sheng Lin
Summary: This study proposes a tunable terahertz (THz) metamaterial using the micro-electro-mechanical system (MEMS) technique for pressure sensing application. The structure of this MEMS-based tunable metamaterial (MTM) consists of gold split-ring resonators (SRRs) on a patterned silicon substrate with through Si via (TSV). By changing the angle of the SRR cantilever, the resonances in transverse magnetic (TM) mode and transverse electric (TE) mode can be tuned. These results demonstrate the potential applications of MTM design in pressure and flow rate sensors.
Article
Engineering, Electrical & Electronic
Ashish Kumar, Gurmeet Singh, Bikash Chandra Sahoo
Summary: This study introduces a Pin Wheel Fractal Antenna (PWFA) loaded with Split Ring Resonator (SRR) for X-band and Ku-band wireless applications. The performance of the proposed design has been significantly improved in terms of reflection coefficient, bandwidth, and gain by utilizing SRR. Results from simulation and measurement of a prototype show good agreement, demonstrating the effectiveness of the proposed design.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Yusheng Zhang, Peng Lin, Yu-Sheng Lin
Summary: Four designs of tunable split-disk metamaterial absorbents were proposed, showing different absorption resonances and high sensitivity. This study provides possibilities for the application of optical gas sensors and biosensors with high sensitivity.
Article
Physics, Multidisciplinary
Neeraj Sharma, Soumendu Jana
Summary: Compound dissipative solitons (DS) are theoretically obtained in a metamaterial with higher order nonlinearities, multi-photon absorption, and diffusion. The detrimental effects of multi-photon absorption and diffusion on DS can be compensated by external gain to stabilize DS. The interaction dynamics of two DSs are studied, showing phase-controlled soliton switching and the ability of a weak solitonic beam to control a strong one. DSs are robust against the randomness of the metamaterial, which may be useful for experiments in higher order nonlinear metamaterials.
Article
Materials Science, Multidisciplinary
Qiuxiao Feng, Daoye Zheng, Yuwei Liu, Yu-Sheng Lin
Summary: This paper proposes a design of tunable spiral-shaped metamaterial (SSM) in the terahertz (THz) frequency range, which exhibits polarization-dependent single- and triple-resonance characteristics. The SSM device shows sensitivity to the change of surrounding ambient, making it suitable for environmental sensing and biosensing applications. The high sensitivity and efficient light-matter interaction between SSM and the incident THz wave make it convenient to analyze gas pressure and composition.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Xuebo Liu, Qian Yang, Kexue Peng, Baohua Zhang, Haineng Bai, Xin Li, Yang Tan, Zheng Zhang, Fuqiang Guo
Summary: A plasmonic refractive index nanosensor based on Fano resonance was designed and achieved excellent performance numerically. The sensitivity of the sensor can reach 1053 nm/RIU, and the structure can excite triple Fano resonance phenomenon by adjusting the structural parameters.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Physical
Sasan Mohammadian, Farshad Babazadeh, Kambiz Abedi
Summary: This study aimed to design a tunable ring resonator based on MOEMS for optical applications. By applying a DC voltage, the diaphragm bends and creates internal stress, thus changing the refractive index and resonance wavelength of the resonator.
Article
Chemistry, Multidisciplinary
Said Mosbah, Chemseddine Zebiri, Djamel Sayad, Issa Elfergani, Mohamed Lamine Bouknia, Samira Mekki, Rami Zegadi, Merih Palandoken, Jonathan Rodriguez, Raed A. Abd-Alhameed
Summary: The design of a highly sensitive microwave sensor based on CSRR for liquid characterization is presented in this paper. The sensor design involves a resonating structure printed on a microstrip-fed rectangular patch on a Roger RO3035 substrate and a CSRR etched on the ground plane. By placing the liquid sample in a capillary glass tube parallel to the sensor surface, the design achieves twice the efficiency in sensitivity and Q factor compared to a normal design. Bending the structure can further enhance design performance, leading to a 10-fold improvement in sensitivity compared to a flat structure.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Electrical & Electronic
Mohammad-Reza Nickpay, Mohammad Danaie, Ali Shahzadi
Summary: A triple-band tunable graphene-based metamaterial perfect absorber is proposed for THz biomedical sensing. The design includes a graphene ring and four circular split-ring resonators with 90-degree rotations to achieve polarization insensitivity. Simulation results show that the absorber has absorption efficiencies above 99.2% and tunable sensing features. The resonance frequencies can be modified by changing the chemical potential of the graphene layer, allowing for improved absorber performance.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Yue Wang, Yongqiang Zhu, Zijian Cui, Haoqing Jiang, Kuang Zhang, Xuan Wang
Summary: This study proposes a machine-learning-assisted bidirectional ensemble learning framework for designing composite metamaterial absorbers. The framework reveals the relationship between the composite metamaterial structure and its absorption spectrum, and can predict the absorption spectrum and extract the structure parameters.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Chemistry, Physical
Yue Wang, Xiang Zhang, Xiaoju Zhang, Tao Zhou, Zijian Cui, Kuang Zhang
Summary: Single-walled carbon nanotubes have been extensively researched for their optoelectronic response in the terahertz frequency range. In this study, a thin isotropic film of single-walled carbon nanotubes was obtained and its absorption and dispersion properties were investigated using terahertz time-domain spectroscopy. A novel terahertz metasurface was demonstrated by etching subwavelength arrays on the film's surface, leading to enhanced electromagnetic field generation for chemical sensing applications. The sensor performance of the metasurface showed high detection sensitivity and low minimum detection mass, offering a systematic design strategy for carbon nanotube-based metasurfaces in biochemical sensing.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Optics
Zijian Cui, Yue Wang, Yongqiang Shi, Yongqiang Zhu, Dachi Zhang, Zhiqi Hong, Xuping Feng
Summary: This study proposes and experimentally verifies a novel scheme based on an all-silicon terahertz plasmon metasurface, which exhibits high sensitivity for detecting Bacillus thuringiensis Cry1Ac toxin. The resonance amplitude variation and frequency shift of the metasurface are investigated by analyzing the changes in sample thickness and permittivity, reflecting the protein residue in the actual process. The reliability and stability of the metasurface chip are verified through time period, temperature, and humidity control.
PHOTONICS RESEARCH
(2022)
Article
Optics
Zihan Zhao, Yue Wang, Xumin Ding, Haoyu Li, Jiahui Fu, Kuang Zhang, Shah Nawaz Burokur, Qun Wu
Summary: This paper presents the design and demonstration of a compact logic operator based on a single-layer metasurface operating at microwave frequency. By mapping nodes in the trained fully connected neural network (FCNN) to specific unit cells in the metasurface, a logic operator with only one hidden layer is physically realized. Experimental results verify that the proposed metasurface logic operator can achieve three basic logic operations (NOT, OR, and AND) under different input signals.
PHOTONICS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Xiaoju Zhang, Yue Wang, Xiang Zhang, Tao Zhou, Kuang Zhang, Xinmei Wang
Summary: In this paper, a novel composite THz metasurface integrated by carbon nanotubes (CNTs) resonant metasurface and silicon microfluidic channel has been proposed. It combines the advantages of semiconductor and carbon nanotubes film materials, and demonstrates good absorption characteristics and refractive index sensing capabilities.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Xiaoju Zhang, Yue Wang, Zijian Cui, Xiang Zhang, Lisha Yue, Kuang Zhang
Summary: This study proposes two types of all-silicon multi-band THz metasurface sensors, which achieve more than 90% multi-band resonance absorption. The sensing applications of these sensors are demonstrated by detecting different concentrations of saccharides and 2,4-D solutions.
Article
Optics
Hui Hu, Zijian Cui, Lisha Yue, Xinmei Wang, Chen Yang, Kuang Zhang, Yue Wang
Summary: This study demonstrated a silicon-based metasurface for pesticide residue sensing, showing good linear correlation with pesticide solutions concentrations at a specific frequency. It provides a promising platform for biochemical sensing application and rapid primary screening and quantitative analysis of analytes.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Dachi Zhang, Yue Wang, Yongqiang Zhu, Zijian Cui, Guangcheng Sun, Xiaoju Zhang, Zhenyu Yao, Xiang Zhang, Kuang Zhang
Summary: In this paper, a new asymmetric all-dielectric THz metamaterial is proposed, and four ultrahigh quality factor resonances in the transmission spectrum are observed. The physical mechanism of these resonances is clarified, and the proposed device exhibits the ability to function as an ultra-sensitive sensor with a maximum sensitivity of 482 GHz/RIU.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Tao Zhou, Suguo Chen, Xiaoju Zhang, Xiang Zhang, Hui Hu, Yue Wang
Summary: In this work, a study of bright-bright mode electromagnetically induced transparency based on carbon nanotube films terahertz metasurface is presented. The formation mechanism of the transparent window is analyzed, and the sensing performance and slow light characteristics of the proposed metasurface are investigated. This study provides opportunities for electromagnetically induced transparency applications.
Article
Chemistry, Analytical
Haoqing Jiang, Yue Wang, Zijian Cui, Xiaoju Zhang, Yongqiang Zhu, Kuang Zhang
Summary: This study proposes a switchable terahertz metamaterial device based on vanadium dioxide, which can switch between transmission and absorption modes with high transmission rate and absorption peak. The device achieves transmission and quad-band resonance absorption in the terahertz frequency range by varying the temperature of vanadium dioxide.
Article
Optics
Yue Wang, Can Cui, Zhiwei Lu, Zhenxu Bai, Yulei Wang, Hang Yuan
Summary: In this paper, a method for beam spatial intensity modification based on stimulated Brillouin amplification (SBA) is proposed. By manipulating the polarization and intensity of the beam, the spatial distribution can be modified, achieving efficient energy amplification and beam shaping.
Article
Optics
Yue Wang, Dachi Zhang, Guangcheng Sun, Zhenyu Yao, Kuang Zhang, Wei Shi
Summary: In this paper, a graphene metagrating that can support quasi-BIC by introducing periodic perturbations is proposed. The transmission spectrum at normal and oblique incidence is discussed. The resonances are analyzed to clarify the mechanism of quasi-BIC by the multipolar decomposition of radiative power and the electric field distribution.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Zijian Cui, Yue Wang, Guangcheng Sun, Wenshuo Chen, Kuang Zhang, Xinmei Wang
Summary: This study successfully demonstrates a Friedrich-Wintgen bound states in the continuum (BIC) based on mode coupling in a terahertz metasurface. The transition from ideal BIC to quasi-BIC is caused by coupling mismatch, resulting in increased Q-factor and electric field enhancement.
Article
Chemistry, Multidisciplinary
Xueying Li, Ying Zhang, Jiuxing Jiang, Yongtao Yao, Xunjun He
Summary: In this study, a method using terahertz metasurface unit cells to generate vortex beams with different wavefronts and efficiently shape the wavefronts in full-space is proposed. This method shows great potential for applications in 6G terahertz communications.
Article
Nanoscience & Nanotechnology
Yue Wang, Zhenyu Yao, Zijian Cui, Guangcheng Sun, Dachi Zhang
Summary: This study proposes and experimentally demonstrates a metasurface holography multiplexing scheme based on multiple polarization channels combined with OAM. Multiple OAM multiplexing holograms are constructed in multiple different spin-polarization channels, and two multiplane holograms and 15 OAM multiplexing holograms are successfully integrated on a single metasurface. An optical nested encryption framework for parallel communication is also introduced.
