In this letter, the authors report observation of metal-enhanced structured fluorescence emission. Perylene in close proximity to silver island films (SiFs) enhances emission intensity. regard, an approximately two-fold higher perylene intensity was observed from SiFs as compared a glass control sample, containing no nanoparticles. The findings strongly suggest that surface plasmons can radiate fluorophore’s vibrational structure. This is helpful authors’ understanding, not only for studying...

Abstract Hydrogels are a class of polymer materials with 3D network structure. Due to their flexibility, tunable dielectric properties, and high transparency, hydrogels have been extensively utilized in applications, including flexible electronics, smart materials, biomedical engineering. This study successfully synthesized polyacrylamide (PAM) exhibiting optical transparency flexibility through chemical polymerization. The experimental results demonstrate that hydrogels, as hydrophilic...

Abstract This paper designs and validates a composite functional metasurface that combines microwave absorption vibrational energy harvesting. The is composed of an indium tin oxide (ITO) electrically conductive glass pattern layer, arrays 1‐ethyl‐3‐methylimidazolium dicyanamide [EMIM][N(CN) 2 ] droplets, underlying layer. possesses broadband performance when the frequency bands are between 7.34 22.63 GHz, which can transform vibration into electrical simultaneously. relationship output...

Abstract Dynamically tunable flexible metasurfaces with optical transparency are essentially useful in stealth, electromagnetic sensing, and camouflage while keeping continuous observation communication. In this paper, a dual‐tunable graphene‐based metasurface is designed based on patterned graphene sandwich structures, showing independent dynamic control of reflection amplitude resonance frequency, excellent transparency, outstanding flexibility. Both the simulated measured results...

We report the effects of thermally annealing, non-, just-, and thick continuous silver films for their potential applications in metal-enhanced fluorescence, a near-field concept which can alter free-space absorption emissive properties close-proximity fluorophores (excited states). have chosen to anneal noncontinuous particulate film 5nm two thicker films, 15 25nm thick, respectively. Our results show that annealing has little effect on fluorescence when coated with monolayer...

Abstract Ionogels, as a novel class of environmentally friendly electronic materials, have received extensive attention. This study successfully prepared P(AM‐co‐AA) ionogel with optical transparency and flexibility via chemical polymerization. Experimental outcomes reveal that the dispersion anions cations within is effectively controlled by polymer network, resulting in distinct dispersive dielectric property, which suitable for applications electromagnetic metamaterials. Leveraging these...

Abstract The defect of mura thin film transistor liquid crystal display (TFT‐LCD) panel is small, and the gray change unknown. In manual detection, easily overlooked, which time‐consuming labor‐intensive. These factors resulted in our inability to properly assess distinguish multiple defects on a single image field inspections. Aiming at above problems, this article proposes multibackground TFT‐LCD visual inspection method. To obtain optimal algorithm under high‐precision high‐speed...

In view of the stability unmanned aerial vehicle (UAV) power system, this paper found that voltage spike generated by IGBT mainly occurs when is turned off in study system interior and drive overvoltage protection, an excessive will lead to damage. To eliminate serious threat safe operation circuit, protection circuit combining dynamic feedback active clamping proposed. method, circuits are operated alternately, controlled capacitor’s rise rate. The gate current output directly compensated...

In order to solve the defects of large inertia and control difficulty electrically driven quadruped legs robots, a novel leg structure method are proposed in this paper. terms structure, motor knee is arranged body robot reduce weight legs. addition, paper improves PVT difference algorithm embedded PMAC controller. Using nonlinear principle U-model, optimized segmented Hermite used implement planning foot trajectory robot. Simulation experiment show that design reasonable improved...

Trajectory planning is the foundation of locomotion control for quadruped robots. This paper proposes a bionic foot-end trajectory which can adapt to many kinds terrains and gaits based on idea combining Cartesian space with joint space. points are picked inverse kinematics solution, then quintic polynomials used plan trajectories. In order ensure that generated by closer original trajectory, distributions interpolation point analyzed from spatial domain temporal domain. An evaluation...

To meet the stability requirements for moving quadruped robots, it is important to design a rational structure single leg and plan trajectory of foot. First, novel electrically driven mechanism robot designed in this paper reduce inertia swing. Second, modified foot based on compound cycloid proposed, which has swing‐back retraction motion continuous velocity x ‐axis direction. Third, Simulink platform built verify correctness proposed trajectory. The simulation result shows that when flight...

Myosin superfamily, a large and diverse family of molecular motors important for cell motility migration, has been illustrated to play contradictory roles during the development several kinds tumors. However, function prognostic values MYOs in head neck squamous carcinoma (HNSCC) still remain largely unknown. In current manuscript, expression levels clinical data HNSCC were investigated by online databases, including Oncomine, GEPIA, GEO, TCGA, HPA, UALCAN, Kaplan-Meier plotter, CancerSEA;...

The paper presents a novel sleeve monopole antenna and analyzes its VSWR radiant characteristics. structure of the above is changed so that height lowered to meet practical needs impedance bandwidth expanded. proposed omnidirectional antenna, ranging from 120MHz 520MHz, has wider more symmetric pattern compared with traditional antenna. achieves 125% for VSWR<; 3 good radiation patterns.

For precision machining of 0Cr18Ni9, a two‐dimensional ultrasonic cutting device is studied, which composed an elliptical vibration‐working head and high‐power driving system. The working designed according to the size lathe tool post. flange in nodal plane, oscillator fixed plate, can reduce mechanical loss vibration. drive system realize linkage amplitude synchronous control two arms. speed frequency tracking fairly fast, satisfactory. vibration shape be arbitrarily set, stable. Through...

A novel wideband sleeve antenna with capacitive annulus for wireless communication applications is presented in this paper. structure introduced to improve the impedance bandwidth through exciting a new resonate point. By loading at center of sleeve, an enhancement achieved upper frequency band. The measured VSWR • 2 about 142.8% ranging from 1.01 6.06GHz achieved, and monopole-like radiation patterns are presented. prototype has been fabricated tested, experimental results validate design...

The parallel leg of the quadruped robot has good structural stiffness, accurate movement, and strong bearing capacity, but it is complicated to control. To solve this problem, a series connection legs (SCPL) was proposed, as well control strategy combined with central pattern generator (CPG). With planar 5R research object, SCPL analysis method used analyze structure. topology CPG network built Hopf oscillator unit model, core model system. By continuously adjusting parameters in system...

Epidermal inclusion cysts (EICs) of the breast develop in deep parenchyma, and they are very rare. Only about 10 cases have been reported English-language literature to date. In this report, we present a rare case giant EIC with infection arising within parenchyma. Unlike typical breast, was cystic solid lesion containing large amount liquid cyst popcorn-like calcification wall. describe contrast-enhanced spectral mammography (CESM), ultrasonography, computed tomography findings provide...

In the Panax notoginseng quality intelligent management system, big roots and fibrous cannot be cut automatically because machine distinguish taproot, roots, of notoginseng, resulting in automatic cutting mechanism unable to obtain control trajectory coordinate reference tool feed. To solve this problem, paper proposes a visual optimal network model detection method, which uses image method marking anchor frames improve accuracy. A variety deep learning models are modified by TensorFlow...

Kinematic calibration is necessary for the pose accuracy improvement of parallel robots. However, difficulties occur in traditional methods, such as exceeding a large number error parameters and accumulation. In this paper, 3-PUU robot taken research object, closed-loop vector method differential theory are employed to establish an model. Through quantitative analysis geometric parametric errors, redundant within algorithm meticulously eliminated. By treating dominant terms optimization...

Abstract In this paper, a temperature tunable ultra-wideband absorber based on ionic liquid is proposed for the microwave frequency band. The consists of band-resistive selective surface, 3D resin cavity vessel, and an ([EMIm][N(CN) 2 ]) layer. Numerical simulation analysis shows that absorptivity more than 90% relative bandwidth 113.04% in range 7.5–27 GHz. Meanwhile, has different tuning effects bands with change temperature. Along going up, decreases low-frequency band 6.5–14 GHz,...