Article
Nanoscience & Nanotechnology
Baiying Taishi, Yating Yang, Xueqi Wu, Jianchun Xu, Shanguo Huang
Summary: This article presents, optimizes, and measures a novel 3D electrically small antenna with dual-band. The optimized antenna works in 0.789 GHz and 1.183 GHz, showing simulated results similar to measured results, meeting the miniaturization requirements of modern wireless communication systems.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Yazusha Sharma, Rukhsar Zafar, Sanjeev Kumar Metya, Vinay Kanungo
Summary: This study presents a Plasmonic sensor based on coupled split ring resonators, featuring dual Fano resonances, ultra-narrow line width, and high Quality factor. The sensor design shows excellent sensitivity and resolution for optical glucometer applications, as well as potential uses in chemical sensing and various biological applications.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Taiwei Yue, Zhi Hao Jiang, Ke Zhang, Jiangjia Yi, Wei Hong, Douglas H. Werner
Summary: In this work, compact polarization-controllable dual-band antennas were designed, prototyped, and experimentally verified. By tailoring the dispersive properties of the metasurface (MS), the antennas achieved controllable polarization in different frequency bands. The measured results of three example antennas agreed well with simulation predictions, verifying the proposed concept and specific antenna designs.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Physics, Applied
Rowan S. Parker-Jervis, Sae June Park, John E. Cunningham
Summary: Finite-element methods were used to design and simulate a tunable terahertz band-stop filter based on coupled split-ring resonators integrated into a planar Goubau-line waveguide. Two split-ring resonators with different geometrical lengths and gap widths were designed to resonate at the same frequency, with controlled resonance splitting by adjusting the distance between them. Investigation of the coupling strength of the resonators as a function of relative separation revealed a dispersion relation showing anti-crossing of the coupled resonances as the cantilever bends.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Ali M. Albishi, Saleh A. Alshebeili, Omar M. Ramahi
Summary: This paper presents a sensitive microwave near-field sensor based on utilizing a three-dimensional capacitor within a planar split-ring resonator, which enhances sensitivity in detecting dielectric fluids. Experimental testing shows higher sensitivity in detecting the presence of chloroform and dichloromethane, as well as changes in fluid levels. The proposed sensor offers improved performance compared to planar resonators, with increased electric field enhancement and higher loaded-quality factor achievable.
IEEE SENSORS JOURNAL
(2021)
Article
Computer Science, Information Systems
Mohammad Saeid Ghaffarian, Gholamreza Moradi, Somayyeh Khajehpour, Mohammad Mahdi Honari, Rashid Mirzavand
Summary: A novel dual-band/dual-mode compact hybrid coupler is introduced in this paper, which can act as different types of couplers in different frequency bands. One of the unique features of this structure is that the outputs in each mode of operation are on the same side. This design is achieved by utilizing open split ring resonators to create artificial transmission lines.
Article
Nanoscience & Nanotechnology
Yifei Xu, Qi Song, Enen Li, Min Zhang, Zhenhua Sun, Tianwu Wang, Fang Liu, Peiguang Yan
Summary: An optical controlled THz modulator is proposed in this study, combining lead sulfide (PbS) quantum dots with subwavelength metallic split-ring resonators (SRRs) to provide field enhancement. The modulation depth reaches 60.3%, which is approximately 3 times larger than the PbS quantum dots film without SRRs (as reference) in the frequency range of 0.1-1.1 THz. The significant enhanced THz modulation is mainly attributed to the local THz field enhancement caused by the SRRs, consistent with the simulation result.
Article
Engineering, Electrical & Electronic
V. P. Sarin, Rohith K. Raj, Vasudevan Kesavath
Summary: This paper proposes and verifies the Dipole-Induced Transparency (DIT) in the microwave frequency regime through experimental and simulation studies. By using a single-layer mirrored Split-Ring Resonator (SRR) array configured in the H-perpendicular to excitation scenario, an out-of-phase oscillating electric dipole moment is created, resulting in the nullification of far-field scattering and the emergence of a transparency window. The computational validation of the results is conducted using multipole scattering theory, while numerical analysis and experimental measurements are used to study the coupling effects and the manifestation of the transparency window.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2022)
Article
Optics
Jie Xu, Jian Tang, Ming Chen, Chuanxin Teng, Shijie Deng, Yu Cheng, Shiliang Qu, Libo Yuan
Summary: This study proposes improved linear and circular dichroic metamirrors based on single-layer graphene to address the issues of low efficiency, single function, and complex structure in existing dichroic metamirrors. The designed metamirrors consist of the ion-gel, patterned graphene, polyimide, polysilicon, and gold substrates. The anisotropy of the achiral structures enables simultaneous circular dichroism (0.8) and linear dichroism (0.9) in two directions without functional switching. The exceptionally strong dichroism is achieved by manipulating the incidence angle of electromagnetic waves rather than the structural chirality.
Article
Engineering, Electrical & Electronic
Navid Hosseini, Masoud Baghelani
Summary: Real-time fermentation process monitoring is crucial for achieving high quality products in the food industry. Traditional microwave sensing techniques may not accurately measure the volumetric fractions of components during fermentation, but a novel technique has been proposed to address this issue.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Multidisciplinary
Wei Du, Youcheng Zhu, Zhendong Yan, Xiulian Xu, Xiaoyong Xu, Jingguo Hu, Pinggen Cai, Chaojun Tang
Summary: The theoretical study showed that magnetic plasmon resonances (MPRs) in a 3D metamaterial consisting of vertical Au split-ring resonators (VSRRs) array on Au substrate, coupled with propagating surface plasmon polaritons (SPPs), could generate an ultranarrow-band hybrid mode with significantly enhanced magnetic fields on the metal substrate. The proposed metamaterial exhibited high sensitivity (S = 830 nm/RIU) and figure of merit (FOM = 377), suggesting potential for label-free biomedical sensing applications.
Article
Engineering, Electrical & Electronic
Mohamed Amine Zidane, Amar Rouane, Cherif Hamouda, Hichem Amar
Summary: A microwave sensor for glucose concentration measurement is proposed, utilizing a novel configuration of resonators to detect small changes in glucose concentrations in water. Through numerical simulation and experimental study, the sensor demonstrates high sensitivity and accuracy, making it suitable for real-time, non-destructive and cost-effective measurements.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Physics, Applied
Daniel A. Bobylev, Dmitry I. Tikhonenko, Alexander B. Khanikaev, Maxim A. Gorlach, Dmitry V. Zhirihin
Summary: Topological states in a simple square lattice can be tailored by the orientation of non-centrosymmetric split-ring resonators, offering a new design strategy for disorder-robust localization of electromagnetic waves at the edges and corners of photonic structures. Numerical predictions are confirmed experimentally by observing the emergence of nontrivial topological properties and localized edge and corner states.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Lukas Conrads, Andreas Hessler, Konstantin G. Wirth, Sebastian Meyer, Matthias Wuttig, Dmitry N. Chigrin, Thomas Taubner
Summary: Resonance tuning of nanoantennas is crucial for miniaturized active metasurfaces. Phase-change materials (PCMs) have been widely used for non-volatile resonance tuning by changing the refractive index. While conventional tuning is done by annealing the entire sample, recent research shows that individual rodantenna resonances can be adjusted by locally addressing each meta-atom with laser pulses. This work demonstrates the local switching of PCM-covered aluminum split-ring resonators (SRRs) to independently tune both electric and magnetic dipole resonances.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jiahao Yang, Yu-Sheng Lin
Summary: Two types of refractive index sensors based on tunable terahertz metamaterials utilizing different geometric positions for resonance tuning were proposed, demonstrating flexibility in real applications and enhanced sensitivity in varying refractive index environments.