A5004854896- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Catalysis and Hydrodesulfurization Studies
- Supercapacitor Materials and Fabrication
- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Transition Metal Oxide Nanomaterials
- Catalysis for Biomass Conversion
- Advanced ceramic materials synthesis
- Advanced Battery Technologies Research
- Ferroelectric and Piezoelectric Materials
- Electrocatalysts for Energy Conversion
- Antenna Design and Analysis
- Microwave Dielectric Ceramics Synthesis
- Catalysis and Oxidation Reactions
- Advanced materials and composites
- nanoparticles nucleation surface interactions
- Crystallization and Solubility Studies
- Advanced Thermodynamics and Statistical Mechanics
- Simulation and Modeling Applications
- Conducting polymers and applications
- Ion-surface interactions and analysis
- Gas Sensing Nanomaterials and Sensors
Zhengzhou University of Light Industry
2015-2024
Beijing University of Technology
2024
Taiyuan University of Technology
2005-2024
East China University of Science and Technology
2017-2023
Harbin Electric Corporation (China)
2021
Carnegie Mellon University
2021
China Iron and Steel Research Institute Group
1992-2020
Shanghai Power Equipment Research Institute
2012-2020
Beijing Advanced Sciences and Innovation Center
2018
Yanshan University
2017
This study proposes an ultrathin chiral metamaterial slab stacked with twisted complementary split-ring resonators (CSRRs) for highly efficient broadband polarization transformation. The of linearly polarized electromagnetic waves can be rotated in a specific direction by passing it through such having thickness about one-tenth the operational wavelength. Microwave experiments verified theoretically predicted conversion efficiency up to 96% covering bandwidth 24% central CSRRs circular...
Multi-mode modulations of near-infrared and visible optical behaviors in <italic>x</italic>Nd-KNN translucent ceramics are induced by color center-related photochromism reactions.
This study demonstrates theoretically and experimentally that a metallic helix array can operate as highly transparent broadband wave plate in propagation directions perpendicular to the axis of helices. The functionality arises from special property array, namely, two branches elliptically right-handed left-handed polarized states are nearly rigidly shifted frequency their dispersions controlled by different mechanisms be independently tuned structural parameters.
This study theoretically and experimentally investigates the transmission properties of a metamaterial slab comprised two layers metallic fish-scale structure arrays sandwiched dielectric layer. Calculations show that asymmetric can be tuned by varying thickness, due to evanescent interlayer coupling. The spatial evolution local field inside indicates functions as perfect polarization transformer at certain frequencies in manner waveguide twist. Measured spectra are good agreement with...
Abstract Dy 3+ ‐doped K 0.5 Na NbO 3 ‐Ba(Sc Nb )O transparent ferroelectric ceramics, a novel smart white‐lighting (WL) photochromic (PC) material, were prepared by conventional pressureless sintering. The ceramics exhibit high optical transmittance (~67% at 1800 nm), good photoluminescence (PL) performance, high‐quality WL, and moderate electrical properties. Meanwhile, high‐contrast modulations of PL intensity (with the maximal modulating values 20.5% 57.4%, respectively) have been...
An amenable method for improving rate performance of Li4Ti4.85Al0.15O12 electrode by post-synthesis treatment in formaldehyde aqueous solution at room temperature is introduced. The as-prepared samples are characterized XRD, BET, SEM, HR-TEM, XPS and electronic conductivity measurement. causes no noticeable change on the phase structure has only little effect specific surface area particulate morphologies. It also slightly decreases lithium ion diffusion coefficient. However, it...
The visbreaking of heavy oil under high-pressure N2 or supercritical water (SCW) environment was experimentally investigated. Despite the difference in reaction media, follows same mechanism, that is, dealkylation and condensation aromatics. presence SCW makes it possible is transferred to phase with superior diffusivity by which tends be controlled intrinsic kinetics rather than diffusion. Accordingly, occurring phase, vital viscosity reduction oil, responds sensitively increase...
A facile way for the synthesis of LiFePO4 composite using a solution combustion technique based on glycine–nitrate process with inexpensive iron (III) as raw material is introduced. Pure phase was obtained at an optimal glycine to ratio 4:1. To further increase electrode performance, sucrose applied organic carbon source. The introduction after auto-combustion found be most effective in improving performance. as-synthesized LiFePO4/C sample contained about 2.86 wt.% shows attractive...
We propose a scheme for realizing subwavelength electromagnetic diode by employing cascading nonlinear meta-atoms. One-way response is demonstrated on microwave transmission line comprising of three metallic ring resonators acting as meta-atoms and varactor the medium inclusion. Experiments show that our implementation can operate simultaneously forward backward at different frequencies. A contrast up to 14.7dB was achieved between transmission. Subwavelength size should be useful...
Indium-doped manganese oxide materials have been hydrothermally synthesized. Doped indium was found to be in framework sites synthetic cryptomelane. Cyclic voltammetry (CV) results show that doped with generates electrocatalytic activity for the O2 reduction reaction.
composite cathode for secondary lithium-ion battery was synthesized via a mechanochemical activation/sintering process adopting citric acid (CA) as carbon source. The formation process, optimal content, and electrochemical performance of the as-synthesized powders are investigated by thermogravimetry-differential scanning calorimetric analyzer, X-ray powder diffraction, -temperature-programmed desorption (TPD), temperature-programmed reaction, electron microscopy, impedance spectroscopy,...
A novel multienzyme cascade was designed for the regio- and stereo-selective amination of renewable fatty acids to value-added d -amino acids.
It is generally believed that, in the phenomena of extraordinary optical transmission, perfect transparency only occurs at a single or multiple discrete frequencies. This report presents for first time that stacked metallic multi-layered system, being perforated with coaxial annular apertures (CAAs), can be perfectly transparent broad frequency range. The phenomenon arises from coupling guided resonance modes CAAs among different layers. bandwidth extended to about 40% central 2-3 Measured...