Vanadium-based materials have been extensively studied as promising cathode for zinc-ion batteries because of their multiple valences and adjustable ion-diffusion channels. However, the sluggish kinetics Zn-ion intercalation less stable layered structure remain bottlenecks that limit further development. The present work introduces potassium ions to partially substitute ammonium in vanadate, leading a subtle shrinkage lattice distance increased oxygen vacancies. resulting vanadate exhibits...

Abstract Soft magnetic composites (SMCs) are ungently demanded in high‐frequency power electronics for their large magnetization and high electrical resistivity. However, traditional cold‐pressed SMCs faced with low mechanical strength insulation instability, which severely restricts applications. In this study, liquid‐phase sintering techniques to prepare FeSiAl/MoO 3 orginally employed, where consolidation of metallic particles achieved one step. The redox reaction between FeSiAl MoO melt...

Harvesting vibration energy to power wearable devices has become a hot research topic, while the output and conversion efficiency of harvester with single electromechanical mechanism is low working frequency band load range are narrow. In this paper, new structure piezoelectric electromagnetic coupling up-conversion multi-directional proposed. Four cantilever beams installed on axis base along circumferential direction. Piezoelectric plates set surface each beam harvest energy. The permanent...

This article presents a broadband piezoelectric vibration energy harvesting system. It can actively tune its resonant frequency to match the of ambient excitation. The harvester is comprised movable mass attached cantilever beam. And microstepper employed adjust position for regulating frequency. Furthermore, in this article, new method proposed online dynamic detection transducer (PZT) statement without any additional sensors. A circuit detect excitation deviation against only by measuring...

A broadband active self-tuning frequency piezoelectric energy harvester (AST-PEH) is proposed in this paper. It consists of a cantilever beam, an harvesting and control circuit (EHCC), miniature stepper motor, screw rod T-section mass. can actively adjust the position mass according to ambient vibration frequency. matches AST-PEH's resonant with excitation frequency, it widens operating range AST-PEH. The expression function constructed based on dynamic static theoretical analysis. model...

In this study, first-principles calculations were utilized to investigate the lattice constants, elastic and mechanical properties of gold–copper (Au–Cu) intermetallic compounds (IMCs), including AuCu3, AuCu, Au3Cu. We also verified direction dependence Young’s modulus, shear Poisson’s ratio compounds. The calculated parameters agreed with experimental data, single-crystal modulus E, G, bulk B, ν calculated. For moduli, AuCu3 showed highest anisotropy, followed by AuCu ratios Au3Cu crystals...

The hardening curve for cylindrical specimens determined by conventional uniaxial tension tests generally corresponds to a relatively narrow strain range due the occurrence of necking. To achieve within large range, in this study, multi-specimen with pre-torsion are developed through extrapolating from stress–strain data various magnitudes strains. calculation pre-strain twisted specimen needs be addressed tests. three methods on proposed, leading their individual curves Q345 specimens. An...

In post-necking tension of cylindrical specimen, the stress corrections based on current analytical models have relatively significant errors at large strains. this study, prediction capability these involving Bridgman model, Siebel model and Chen is evaluated by performing a series finite element simulations uniaxial specimen with different hardening exponents varied from 0.05 to 0.3. Numerical analysis strain distributions necking cross section indicates that considerable corrected...

In this study, an inverse method with the integration of finite element simulation and optimization algorithms is proposed to determine flow curve cylindrical specimen characterized by modified Voce hardening model. The tensile test repetitiously simulated different combinations model parameters designed through Latin hypercube design method, where baseline values variation ranges are identified Leroy–Bridgman obtaining load–displacement curves. corresponding response defined as sum absolute...

Remote sensing image fusion technology (pan-sharpening) is an important means to improve the information capacity of remote images. Inspired by efficient arameter space posteriori sampling Bayesian neural networks, in this paper we propose a Generative Adversarial Network based on Preconditioned Stochastic Gradient Langevin Dynamics (PGSLD-BGAN) pan-sharpening tasks. Unlike many traditional generative models that consider only one optimal solution (might be locally optimal), proposed...

In the determination of full-range hardening curve with compression test, influence friction and corresponding stress correction have always been an enormous challenge. this study, a hyperbolic shaped specimen is designed to conduct test for in large range strains without effect friction. The associated method firstly derived by performing series finite element simulations tests using proposed curves composed different combinations initial yield stresses strain exponents. Finally, mild steel...

The accurate measurement of flow stress curve to large strains using cylindrical compression specimen is always a great challenge due the influence friction. Recently, present authors designed hyperbolic shaped (HSC) which can yield an average true stress- strain independent friction and proposed correction function for fast estimation strains. aim this paper threefold. Firstly, investigate whether analytical method tensile necking can, or cannot, be extended HSC correcting into stress....

Abstract The disposal of waste oil, paint and coating barrels (WOPCBs) after use is an ongoing social environmental problem. In this paper, a novel technological scheme using steel converter co-processing proposed for the safe resource utilization WOPCBs. mainly composed WOPCBs pretreatment disposal, focusing on impact environment production process. Compared to traditional technology, presented takes full advantages process protection facilities converter, has many advantages, such as large...

In this paper, we present a MCM chip to optical interconnect layer in which optoelectronic devices are integrated onto glass light-guiding substrate. Rather than solder bump bonding, used the epitaxial lift-off technique for integration. This integration facilitates mixed material integration, so that able choose most cost effective and high performance each function We report successful of emitters detectors substrate, demonstrating thin-film technology is compatible with proposed system....

Abstract The disposal of waste oil, paint and coating barrels (WOPCBs) after use is an ongoing social environmental problem. A novel co-disposal utilization method WOPCBs has been proposed in this paper. Compared with the traditional methods, presented takes full advantages production process protection facilities steel converter, many advantages, such as a large capacity, high incineration temperatures, thorough decomposition organic compounds, low cost, easy operation, highly efficient...