A5115604935- Thermochemical Biomass Conversion Processes
- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Dielectric properties of ceramics
- Advanced Sensor and Control Systems
- Dielectric materials and actuators
- Intermetallics and Advanced Alloy Properties
- Polymer-Based Agricultural Enhancements
- Embedded Systems and FPGA Design
- ZnO doping and properties
- Plant Growth Enhancement Techniques
- Microwave Dielectric Ceramics Synthesis
- Fiber-reinforced polymer composites
- Coal Combustion and Slurry Processing
- Maritime Navigation and Safety
- NF-κB Signaling Pathways
- Intracerebral and Subarachnoid Hemorrhage Research
- Gas Sensing Nanomaterials and Sensors
- Electrohydrodynamics and Fluid Dynamics
- Electromagnetic Effects on Materials
- Energy Load and Power Forecasting
- Advanced Welding Techniques Analysis
- Ultrasonics and Acoustic Wave Propagation
- Thermal properties of materials
- Geophysics and Gravity Measurements
Hunan Agricultural University
2024
Beijing Institute of Technology
2024
Harbin Institute of Technology
2024
Jilin Jianzhu University
2015-2022
Ningbo Science and Technology Bureau
2019-2022
Xihua University
2022
Zhejiang University
2015-2021
Peking University
2020
Peking University People's Hospital
2020
State Grid Corporation of China (China)
2019
Ferroelectric materials are widely used in the applications of electronic devices due to their robust spontaneous polarization. The surface roughness ferroelectric thin films, which is closely related morphology, can play an important role determining domain structures. In this work, we have investigated influence annealing conditions on morphology epitaxial BiFeO 3 and SrRuO films prepared by pulsed laser deposition SrTiO (001) substrates. It found that sensitive time cooling rate,...
Abstract Dielectric strength and energy storage density in Ba 6−3 x La 8+2 Ti 18 O 54 ( = 0.5, 2/3, 0.75) ceramics were investigated as functions of composition microstructure. With increasing , although the dielectric constant decreased from 113 to 102, increased 2.3 J/cm 3 3.2 due for prepared by conventional sintering. The was further improved 4.2 spark plasma sintering under an electric field 1058 kV/cm. Both present indicated strong processing microstructure dependence. optimum achieved...
Abstract Based on previous work, this study further investigated the high‐voltage varistor materials prepared from chemically aided method. Microstructural characterization and electrical measurement results showed that sample possessed more homogeneous microstructure ultrahigh drop voltage per grain boundary ( V gb ) than conventional sample. The obtained value of is connected with much lower donor concentration N d density interface states IS samples, which resulted increased number active...
The paper introduced the conception of Waterway Service Level according to Road analyze waterway traffic load conditions.The Leve is a measure service quality evaluation comprehensive and object feeling provided by subject it can be classified into four levels vessel flow density,vessel speed,a one-way volume,the ratio (V/C) so on.After study,we found it's urgent improve capacity level Xijiang in Zhaoqing area,and through has more room improve,so we put forward some suggestions for...
Abstract Thermoplastic polyurethane (TPU) nanocomposites (TPU/μmAl 2 O 3 ‐ACA/nmAl ) with excellent mechanical, thermal stability and conductivity were fabricated by co‐incorporating aluminate coupling agent DL‐411 chemically functionalized micron Al (μmAl ‐ACA) nano‐Al (nmAl through melt blending method. FTIR analysis indicated that has been successfully grafted on the surface of μmAl , which was beneficial to homogeneous dispersion particles enhancements interfacial interactions between...
In the electronic warfare, AD sampling rate and instantaneous bandwidth are increasing. The traditional DDC cannot meet high application. order to solve this problem, an optimization design method based on parallel digital down conversion polyphase filtering is proposed. Firstly, mathematical model of high-speed down-conversion deduced its implementation architecture designed efficiently DDC, structure frequency designed. Secondly, parameters such as phase calculation multi-path filter...
It uses STM32F103C8T6 microcontroller as the core processor and AFE4400 integrated analog front-end signal conditioning section.OLED12864 displays measurement results. Dedicated pulse oximeter chip simplifies system improves accuracy.
The variation of dielectric, ferroelectric and piezoelectric characteristics BaZrO3–modified (Ba0.85Ca0.15)TiO3 ceramics, (1-x)(Ba0.85Ca0.15)TiO3-xBaZrO3, have been investigated together with the structure evolution. crystal at room-temperature varies from tetragonal to metrically cubic through orthorhombic rhombohedral, morphotropic phase boundary (MPB) is determined around x = 0.12 where significantly enhanced are achieved. With increasing x, present ceramics indicate crossover normal...
Due to the strong magneto-elastic coupling in ferromagnetic/ferroelectric heterostructures and potential applications low-power magnetoelectric nanodevices, ferroelastic domains corresponding dynamic evolution under external stimuli have attracted intense research interest. Using pulsed laser deposition method, we successfully grown layered-perovskite Bi 2 WO 6 thin films on SrTiO 3 (001) substrates. Interestingly, for as-grown with step-flow morphology, relationship between domain number...
Inexpensive biochar-supported catalysts are highly applicable in catalytic pyrolysis.This study investigates the preparation of inexpensive for pyrolysis. Four single-metal (Ni, Fe, Co, Cu) were loaded onto ZnCl2-modified biochar derived from tobacco stalks. The results show that modified carrier has a high surface area and porous structure. Active metal-loaded exhibit activity, increasing pyrolysis gas yield. Fe-C catalyst shows higher yield (49.04%) due to its large pore size. It also...
Electrical breakdown process of ceramics is a complex related to electrical, thermal, and light effects.It has attracted lots attentions.But the mechanism dielectric still under debate, especially for solid ceramics.In this study, with different grain size were sintered at temperatures.A square pulsed voltage 27 kV pulse width 7 s was generated ZnO thickness 2 mm.Electric these investigated using homemade high-timeresolution electric detection system resolution < 1 ns.Compared behaviors...
With the improvement of operation monitoring and data acquisition levels smart meters, mining associated with meters becomes possible. Besides, precisely assessing quality plays an important role in purchasing metering equipment improving economic benefits power utilities. First, seven indexes for are defined based on Gaussian mixture model (GMM) clustering algorithm is applied to extract typical index from massive meters. Then, combination optimization index’s weight presented subject...