Abstract The development of novel materials with high‐efficiency microwave absorption is crucial for mitigating the adverse impacts electromagnetic pollution. In this study, MXene and FeNi Prussian blue analogs (PBA) are assembled onto a melamine foam using self‐assembly in situ growth technique. Subsequently, magnetic carbon foam, comprising alloys, TiN various morphologies, synthesized via carbothermal reduction reaction. surface morphology properties significantly influenced by pyrolysis...

We propose a tunable dual-band reflective cross-polarization converter composed of periodically arranged single layer U-shaped graphene nanostructures in mid-infrared region. The proposed can convert the polarization state an incident wave from linear to its cross at operating frequencies 34.67 and 44.13 THz with high-efficiency conversion ratio (PCR) approaching 100%. Furthermore, as complementary structure, hollow-carved sheet shows broadband performance bandwidth 1 PCR over 90%. this be...

The porous CVD graphene–PEDOT:PSS–PDMS composite has outstanding electrical performance, including higher conductivity and better resistance retention capacity than the graphene–PDMS composite.

A multimechanism optically transparent coded metamaterial absorber is designed and fabricated to suppress backward scattering based on deep neural network (DNN) particle swarm algorithm (PSO). The DNN utilized for the rapid prediction of amplitude phase simplifies design process. PSO facilitates global exploration automatic calibration settings achieve an optimal structural configuration. integration results in innovative inverse algorithm, enhancing efficiency automation metasurface (MMA)...

Layered double hydroxides (LDHs), also known as hydrotalcite-like compounds, are widely used in many fields due to their unique structural advantages. Based on LDHs, a wide range of metal catalysts could be synthesized with high dispersion, tunable acid-base properties, facile but flexible preparation methods, strong metal-support interaction, and thermal stability. Owing these outstanding advantages, LDH-derived materials manifest great potential catalysts, particularly hydrogenation...

Abstract Bound states in the continuum (BICs) have attracted much attention field of refractive index sensing. In this paper, we propose multi-mode symmetry-protected BICs (SP-BICs) and Freidrich–Wintgen BIC (FW-BIC) terahertz metasurfaces consisted periodic open split ring resonators. Firstly, SP-BICs are subject to magnetic dipole, electric dipole (ED), toroidal (TD) modes. Moreover, demonstrate FW-BIC by strongly coupling quadrupole TD For micron film sensing ED mode, simulation results...

Summary In this paper, three new kinds of time‐domain numerical methods exponentially damped systems are presented, namely, the simplified Newmark integration method, precise and complex mode superposition method. Based on traditional method transforming equation motion with damping kernel functions into an equivalent second‐order by using internal variables technique, is developed a decoupling technique to reduce computer run time storage. By first‐order state‐space equation, used...

ABSTRACT In order to develop excellent comprehensive mechanical strength and stability in high‐density polyethylene (HDPE)/wood fiber (WF) composites, polyamide 6 (PA 6), WF modified by environmental‐friendly high temperature vapor (WF‐HTV) were utilized reinforce the compound system. The properties relating interfacial compatibility HDPE/WF‐HTV composites characterized evaluated electron universal instrument, water absorption testing, thermogravimetry, scanning microscope, Fourier transfer...

We investigate the effect of introduction Ag on microstructures and electrical properties polycrystalline VO₂ thin films prepared by reactively sputtering process. X-ray diffraction patterns Raman spectra indicate that Ag/VO₂ composite have similar monoclinic structure to undoped films. However, existence greatly reduces grain size VO₂. Differently, data from scanning electron microscopy atomic force reveal obviously increases particle root-mean-square(RMS)...

Composite insulator sheds are susceptible to aging due a combination of operating environmental factors. MicroFTIR inspection is one the most effective means assess degree shed. In this paper, composite insulators 59 lines in operation Tianjin were sampled and changes $\mathrm{Si}-\mathrm{O}-\mathrm{Si}$ main chain $\mathrm{Si}-\mathrm{CH}_{3}$ side absorption peaks silicone rubber obtained based on Micro-FTIR method surface depth. The results show that uneven distribution along radial...

During normal operation of high-voltage cables, space charges accumulate at the composite insulation interface composed cable body and its accessories. At same time, due to thermal effect copper conductor resistance, a temperature difference is formed on both sides insulation, that affects charge properties medium. Therefore, in this paper, characteristics dielectric sheet samples consisting cross-linked polyethylene as main silicone rubber auxiliary stress cone have been studied under...

Manganese dioxide (MnO2) holds great potential as a pseudocapacitive material for supercapacitors, but its low electric conductivity limits ability to reach the theoretically predicted capacitance. In this study, we successfully synthesized MnO2 in situ on porous carbon microspheres derived from bamboo pulp fibers using hydrothermal method. The morphology and phase of were controlled by adjusting reduction reaction KMnO4. PCS coated with sheet-like δ-MnO2 obtained at Mn/C ratio, resulting...