Wire-based metamaterial absorbers, as a kind of simple but versatile artificial structures, have been widely investigated from microwave to optical frequencies. In order completely understand how the constitutive parameters affect absorption properties, an equivalent circuit model is developed in this paper. The analytical, numerical, and experimental results show that frequency determined by wire length spacer electromagnetic parameters, whereas level thickness spacers losses which include...

We present a novel all-dielectric left-handed metamaterial (LHM) in the X-band microwave regime. The LHM is formed by cubes and square rods, which are made of ceramic with high permittivity low loss. Both Mie theory dielectric resonator found to play important roles generating negative effective parameters. permeability designed frequency range due first resonance associated cubes, while below plasma owing second mode rods. parameter retrieval method, transmission spectra method wedge-shaped...

Abstract Beam splitters and polarization converters of electromagnetic waves based on metasurfaces have been extensively studied. However, there are few reports the ability to arbitrarily control intensity ratio between different diffraction orders while achieving beam splitting conversion. In this paper, we propose a method achieve conversion with varying intensities by manipulating superposition output orthogonal circularly polarized (OCP) light. Specifically, light certain phase...

Abstract Due to their extraordinarily large optical absorption coefficients, transition metal dichalcogenides (TMDs) are gaining more and attention for photovoltaic applications. Improving the device performance of a TMD solar cell requires an optimal architecture reliable fabrication processes. Metal/WS 2 ‐multilayer/metal heterojunctions fabricated using lithography‐free 20 nm thick WS flakes exfoliated on template‐stripped Ag bottom electrodes, then 10 Au top electrodes with diameter µm...

Fano resonance is considered to be a promising approach for integrated sensing. However, achieving and controlling lineshapes on ultra-compact chips remains challenge. In this article, we propose theoretic model based the transfer matrix method (TMM) quantitatively interpret impact of micro-reflective unit (MRU) etched in straight waveguide microring resonator (MRR). Numerical calculations FDTD simulations indicate that size position MRU can used control lineshape. Since coupling region,...

Most of the actively controlled electromagnetically induced transparency analogue (EIT-like) metamaterials were implemented with narrowband modulations. In this paper, a broadband tunable EIT-like metamaterial based on graphene in terahertz band is presented. It consists cut wire as bright resonator and two couples H-shaped resonators mirror symmetry dark resonators. A property transmission amplitude realized by changing Fermi level graphene. Furthermore, geometries structure are optimized...

In this paper, we present the design, fabrication and characterization of a dual band tunable metamaterial absorber (MMA), which can be tuned by applied magnetic field modulated permittivity its components. The MMA consists periodic array cuboid ferrites metal ground plane. Unlike other MMAs, proposed avoids utilizing resonant metallic parts, only employ as resonators, making easy tuning more convenient. When incident electromagnetic wave act on simultaneously, produce ferromagnetic...

In this work, a high temperature infrared (IR) and radar compatible stealthy metamaterial based on ultrathin high-entropy alloy are proposed. From room to 600°C, the fabricated absorption layer (RAL) can have wideband in X-band (8.2-12.4 GHz) with average 78% owing magnetic resonance ohmic loss. The film is further design as shielding (ISL) due low-emissivity property. ISL RAL consist of IR-microwave stealth metamaterial. It give rise strong reduction both wave reflection thermal emission....

We report the design of microwave waveguide devices based on complementary media. Various kinds that possess nearly 100% transmission efficiency are proposed, such as bends, splitters, connectors, and shifters. Compared with previous work low reflection minimized distortion transformation optics, our transform media homogeneous metamaterials. Electromagnetic simulations by a finite-element method detailed examples have been performed to validate designs these functionalities can be close practical.

Abstract The study delves into actively controlling Fano resonance within a single-mode microstrip cavity, coupled with split ring resonator (SRR) incorporating varactor diode. This arises from the interference between SRR and Fabry–Pérot resulting in sharply asymmetric transmission spectrum. diode, situated gap, is biased electrically via an external DC voltage source. Through manipulation of this bias voltage, both frequency amplitude pronounced can be dynamically adjusted. Notably,...

We demonstrate that using single-sized dielectric resonators, all-dielectric left-handed metamaterial (LHM) can be achieved in the C-band microwave regime. The rectangular resonator, operating under higher-order resonant modes, possesses electric and magnetic responses simultaneously, leading to double-negative resonance behavior. find electric/magnetic enhanced by elongating size of resonators along field direction. It is shown polarization currents are same as conduction cut-wire pairs....

The accurate measurement of aircraft mass properties, such as the mass, centroid, and moment inertia (MOI), plays a key role in precise control aircraft. In order to obtain high-precision information on parameters MOI an using single instrument, integrated property system was developed this study by analyzing comparing latest technologies, especially function-switching device, which switches states between center MOI. purpose achieved through clamping. addition, has strong versatility...

Measuring the mass and Center of Gravity (CG) rigid bodies with a multi-point weighing method is widely used nowadays. Traditional methods usually include two parts certain location, i.e., fixed platform mobile platform. In this paper, novel structure proposed to adjust for eliminating side forces which may load on cells. addition, closed-form equations are formulated evaluate performance structure, transformation matrices estimate characteristics structure. Simulation results demonstrate...

<title>Abstract</title> This paper presents a comprehensive study on enhancing the accuracy, real-time performance, and reliability of fault detection in conveyor belt drums. Leveraging insights from two distinct approaches, novel lightweight network model, YOLOv8n + EMBC SCC, is proposed. The model integrates strengths target accuracy speed with innovative modules designed for improved performance. Firstly, module, based DSC high-efficiency convolution, replaces traditional C2F module...

The accurate measurement of mass and centroid is indispensable for control aircraft. In order to eliminate the influence assembly error product pose on results, a multi-station idea that can self-compensate geometric parameter proposed in this paper based on. At same time, kinematic model mechanical structure equipment established prove effectiveness compensation theoretically, experimental verification standard part aircraft carried out. test results show using are significantly better than...

In this paper, a magnetically tunable metamaterial is proposed and studied. The based on the combination of ferrite sheets dielectric rods. property originated from ferromagnetic resonance electric response retrieved electromagnetic parameters transmission characteristic showed that by simultaneously inspiring resonance, composite can possess double-negative band in resonant state. Moreover, was adjusting applied magnetic fields. simulations experiments verified clearly displayed feature....

Recently, metamaterial absorber has attracted considerable attention because of a broad range potential application to electromagnetic stealth, detectors, and communication. In this paper, multifunctional based on the electro-optic properties grapheme is presented. The was consisted graphene microstructure, PDMS media layer single ITO film. These components made optically transparent all are transparent. At first, we optimized structural parameters get satisfactory absorption rate by finite...

We report on a set of metamaterials composed combined metallodielectric films as regards beam splitting use. The energy flow distributions the structures are investigated by using finite element method. It is found that beams split and propagate along direction normal to films. After propagation far field, resolution about sixth wavelength. Two-beam symmetrical non-symmetrical also multi-beam obtained changing structures.

In order to measure mass and center of gravity large size revolving bodies, equipment based on multi-point weighing method was designed applied. The error caused by installation eccentricity tilt the body analyzed, separation model reversal established eliminate error. With proposed, a with diameter 3000mm tested; experimental results showed that can reduce measurement 0. 2mm. This separate tilting, improve accuracy.

Silver nanowires (AgNWs) transparent electrodes have attracted considerable attention owing to their high electrical and thermal conductivity, optical transparency, flexibility on many polymer substrates, simple solution process. Many reports only focused improving the performance of AgNWs while ignored application lifetime considering that silver nanomaterials are susceptive be oxidized or sulfurized under natural environment. In this work, effect various environment factors long-term...