A5102737065- Ferroelectric and Piezoelectric Materials
- Hydrology and Watershed Management Studies
- Fish Ecology and Management Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Multiferroics and related materials
- Advanced Memory and Neural Computing
- Microwave Dielectric Ceramics Synthesis
- Electronic and Structural Properties of Oxides
- Acoustic Wave Resonator Technologies
- Semiconductor materials and devices
- Ferroelectric and Negative Capacitance Devices
- GaN-based semiconductor devices and materials
- Water resources management and optimization
- Dielectric properties of ceramics
- Coastal wetland ecosystem dynamics
- Soil and Water Nutrient Dynamics
- Perovskite Materials and Applications
- HVDC Systems and Fault Protection
- Silicon Carbide Semiconductor Technologies
- Gas Sensing Nanomaterials and Sensors
- Plant Growth and Agriculture Techniques
- Freshwater macroinvertebrate diversity and ecology
- Metal and Thin Film Mechanics
- Ecosystem dynamics and resilience
- Isotope Analysis in Ecology
Xi'an University of Technology
2024
Ministry of Ecology and Environment
2024
State Key Joint Laboratory of Environment Simulation and Pollution Control
2012-2024
Northwest University
2024
Shandong University
2022-2023
Dongguan University of Technology
2020-2023
Beijing Normal University
2010-2021
Beijing University of Technology
2018-2020
Air Force Medical University
2020
University of Science and Technology Liaoning
2020
Amorphous LaAlO3 (LAO) and LAOxNy (LAON) films have been prepared by pulsed laser deposition technique on Si (100) substrates Pt coated silicon substrates. X-ray diffraction, transmission electron microscopy differential thermal analysis investigations showed that both kinds of remain amorphous up to a high temperature 860 °C. Atomic force study indicated the surface deposited is very smooth with root mean square roughness 0.14 nm for 8 LAO. LAON smoother than LAO films. High-resolution...
The coexistence of large conductivity and robust ferroelectricity is promising for high-performance ferroelectric devices based on polarization-controllable highly efficient carrier transport. Distinct from traditional perovskite ferroelectrics, Bi2 WO6 with a layered structure shows great potential to preserve its under substantial electron doping. Herein, by artificial design photosensitive heterostructures desired band alignment, three orders magnitude enhancement the short-circuit...
Based on the upper echelons theory, dynamic capability and resource-based view, this study explores impact of top management’s environmental awareness (TMEA) green innovation (GI), moderating role absorptive capacity (AC) slack resources (SR). Using data A-shared listed manufacturing firms in China from 2010–2023, finds that TMEA has a significant positive effect GI. Furthermore, AC unabsorbed (USR) strengthen GI, whereas absorbed (ASR) weaken The results provide more comprehensive...
Abstract Strongly correlated oxides with a broken symmetry could exhibit various phase transitions, such as superconductivity, magnetism and ferroelectricity. Construction of superlattices using these materials is effective to design crystal symmetries at atomic scale for emergent orderings phases. Here, antiferromagnetic Ruddlesden-Popper Sr 2 IrO 4 perovskite paraelectric (ferroelectric) SrTiO 3 (BaTiO ) are selected epitaxially fabricate engineering. An magnetoelectric transition achieved...
Most rivers worldwide are highly regulated by anthropogenic activities through flow regulation and water pollution. Environmental is used to reduce the effects of on aquatic ecosystems. Formulating alteration-ecological response relationships a key factor in environmental assessment. Traditional models characterized natural between regimes ecosystem factors. However, food webs often altered from states, which disturb assessment such In ecosystems deteriorated heavy activities, species...
Wetland plays an important role in maintaining ecological balance. Water regimes are the most driving forces for wetland structure and function. Unfortunately, recent decades, impacts of anthropogenic activities (e.g. dam construction, agricultural irrigation, industry, settlements) compounded with climate change have altered natural flow profoundly led to severe degradation wetlands worldwide. Baiyangdian Wetland, largest freshwater lake North China, has dried up on several occasions due...
Hydrological regime is a driving factor in wetland ecosystems. Its excessive alteration will lead to severe degradation of wetlands. Assessment environmental flows essential for protection, recovery, and restoration. In order solve the existing problems traditional methods, such as rarely considering water quality ecosystem status, new method was developed assess that reflect synergistic effect quantity on The proposed applied Baiyangdian wetland, largest shallow lake complex North China...
We present a method to study the trap characteristics in BiFeO3 thin films, which display resistance switching effect caused by trapping/detrapping of charge carriers. The consists measuring current transients for detrapping carriers from sites and subsequent analysis time constant transient curve. Using this method, energy level traps was identified be 0.71 ± 0.06 eV. parameters trapping pulses (voltage duration) were found affect constant, indicating close relationship between escape...
We investigated the influence of work function and charge doping on formation oxygen vacancies in metal/oxide heterojunctions by first-principles calculations. SrTiO3 is used as a typical oxide. Simple metals Pt, Au Ag are electrodes. show that electron could improve energy vacancies. In such heterojunction, we found metal electrode affects stability SrTiO3. For an with smaller function, more electrons induced accumulated oxides near interface also studied effect ferroelectric polarization...
Flow regimes have been severely altered by climate change and human activities in recent decades, which has led to ecological degradation rivers. This study proposes an analogy analysis-based framework, coupled with the Pettitt test, indicators of hydrological alteration range variation approach, were used distinguish different effects. framework was applied Sha River, a typical river North China, test its effectiveness. The results show that: (i) disturbance had larger effects on pre-flood...
The effects of gamma rays on two kinds GaN high-electron-mobility transistors (HEMTs) have been investigated in this paper. We identified a gate degradation using combination optical and electrical measurements. demonstrated that the channel current under position is outside gate's control. This prevents from fully pinching off channel, creating concentration region when applying reverse voltage. An integrated analysis, including I-V characterization, emission microscope (EMMI) technique,...
Abstract With increasing environmental degradation from eutrophication, management strategies associated with eutrophic water restoration initiatives are necessary and have garnered wide interest. Macrophytes contribute to quality improvement in lake‐marsh systems through nutrient uptake, while causing considerable loss transpiration. In reverse, hydrological variations affect macrophyte growth status thus phytoremediation performance. The interactions between ecological processes complex,...
x Nd ( Zn 1/2 Ti ) O 3 –(1− Ba 0.6 Sr 0.4 TiO NZT – BST thin films were fabricated on Pt / SiO 2 Si substrates by sol–gel method with = 0, 3%, 6%, and 10%. The structures, surface morphology, dielectric ferroelectric properties, thermal stability of investigated as a function content. It was observed that the introduction into decreased grain size, constant, ferroelectricity, tunability, significantly improved loss stability. corresponding reasons discussed. 10% film exhibited least 0.005...
The resistive switching (RS) of Au/BiFeO3/SrRuO3 samples was shown to be controllable by using a thermal treatment and an electrical stressing method. Such modulation effect can associated the oxygen vacancy movement redistribution within BiFeO3 thin film trapping/detrapping charge carriers at interfaces. After application negative voltage for period, reversal occurred current retention ability in low resistance state increased, indicating increase trap density interface enhancement carrier...
Abstract Baiyangdian, located in Hebei province, is the biggest freshwater lake North China. Since 1960s, due to increasing human activities and climate change, this area has suffered from markedly shrinking drying up several times. In current situation, anthropogenic water supplement plays a very important role maintain wetland's existence development, 1981 2003 approach had been already carried out 15 But until now there few study aspect of whole ecosystem level responded supplement. we...