A5103051228- Ferroelectric and Piezoelectric Materials
- Acoustic Wave Resonator Technologies
- Microwave Dielectric Ceramics Synthesis
- Electronic and Structural Properties of Oxides
- Block Copolymer Self-Assembly
- Graphene research and applications
- Catalytic Processes in Materials Science
- Multiferroics and related materials
- Non-Destructive Testing Techniques
- Ferroelectric and Negative Capacitance Devices
- Aerogels and thermal insulation
- Polymer Nanocomposite Synthesis and Irradiation
- Analytical Chemistry and Sensors
- Microplastics and Plastic Pollution
- Polymer composites and self-healing
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Polymer Foaming and Composites
- Polymer Nanocomposites and Properties
- Mechanical stress and fatigue analysis
- Transition Metal Oxide Nanomaterials
- Semiconductor materials and devices
- Engineering Structural Analysis Methods
- nanoparticles nucleation surface interactions
- Innovative Energy Harvesting Technologies
- Phase Equilibria and Thermodynamics
University of Pennsylvania
2021-2024
University of Delaware
2024
California University of Pennsylvania
2023
Tsinghua University
2007-2022
University Town of Shenzhen
2022
Institute of Microelectronics
2008-2021
Huazhong University of Science and Technology
2019
Understanding polymer transport in nanopores is crucial for optimizing heterogeneously catalyzed processes upcycling and fabricating high-performance nanocomposite films membranes. Although confined dynamics have been extensively studied, the behavior of polyethylene (PE)—the most widely used commodity polymer—in pores smaller than 20 nm remains largely unexplored. We investigate effects extreme nanoconfinement on PE using capillary rise infiltration silica nanoparticle packings with average...
Understanding and modulating the interactions between molten polymers porous solids is important for numerous processes phenomena including catalytic conversion of fabrication nanocomposites nanostructured materials. Although changing surface composition pores would enable modulation nanoporous solids, it challenging to achieve such a control without inducing significant changes size structure nanopores. In this work, we demonstrate that polystyrene (PS) disordered packings SiO2...
Silver nanoparticle (NP) inks have been widely used in the ink-jet printing field because of their excellent properties during low-temperature sintering. However, organic dispersant to prevent aggregation and sedimentation NPs can hinder sintering process result high resistivity sintered films. In this study, silver thin films derived from NP ink with polyvinylpyrrolidone (PVP) were different atmospheres pure nitrogen, air, oxygen. The effect oxygen content atmosphere on thermal ink,...
TPMS (Tire Pressure Monitoring System) has played a more and significant role in safely driving nowadays. Low power consumption excellent accuracy are two of the most important parameters. In this paper, with status judgment low-power measurement is designed realized. A vibration switch applied to judge different running stopping. Based on status, pressure temperature, operations will be carried out order achieve lower consumption. The whole system working intermittently. It good performance...
This paper investigates the high frequency response of Mirnov probe based on a test platform, which is capable generating uniform AC magnetic field within range 1–300 kHz. The eddy current effect quantitatively reflected by phase shift ϕc and normalized amplitude δ measured between cases with without conducting plate located near probe. method compensates resonant in circuit hence reflects purely effect. increases decrease distance plate. With increase frequency, magnitude decreases to...
ABSTRACT Pb(Zr1−x,Tix)O3(PZT) thin films were prepared on 8-inch and 4-inch Pt or Ir-electroded Si wafers by liquid delivery metal-organic chemical vapor deposition (LD-MOCVD) using cocktail sources of Pb, Zr Ti. The processing conditions optimized in order to obtain high-performance PZT films. thickness uniformity substrate was about ± 3.24%. rate Pb (15.8 nm/min) Ti (17.9 deposited faster than that (2.5 nm/min). growth temperature film adjusted 570–630°C depending the substrates used....
The preparation and the microstructure of BaBi4Ti4O15 (BBT) thin films were reported in paper. BBT fabricated on silicon substrate using a modified Sol-Gel technique. A key issue processing is chemical reaction mechanism precursor solution, which governs crystallization characteristics final oxide layer. Ethanolamine an effective complexation reagent Bi3+, could moderate acidity precursor. When pH value about 3.5, stable uniform solution be obtained. Bi-layered perovskite structure forms at...
Ferroelectricity, especially in hafnia-based thin films at nanosizes, has been rejuvenated the fields of low-power, nonvolatile and Si-compatible modern memory logic applications. Despite tremendous efforts to explore formation metastable ferroelectric phase polarization degradation during field cycling, ability oxygen vacancy exactly engineer switch remains be elucidated. Here we report reversibly electrochemical control ferroelectricity Hf$_{0.5}$Zr$_{0.5}$O$_2$ (HZO) heterostructures with...
Understanding the interactions between molten polymers and inorganic porous solids is critical for heterogeneous catalytic conversion of waste into useful chemicals fabrication nanocomposites nanostructured polymers. Developing experimental theoretical approaches to quantify understand polymer-surface would be extremely design new catalysts composites. Here, we demonstrate that interfacial energy polystyrene (PS) or polyethylene (PE) various surfaces prepared via atomic layer deposition...
ZnO-based varistor; Microstructure; design and optimization; Electrical properties Abstract. ceramic varistors of a commercially available varistor composition were prepared under sintering system different temperatures dwelling times. The microstructure electrical investigated systematically optimized. With increasing temperature from 1035 to 1175 °C time 1 4 h, the phases samples almost had no change, but at presented highest porosity; nonlinear coefficient generally increased, 1145 same...
In the paper, microstructure and properties of Sr1-xBaxBi4Ti4O15 (SBBT) ceramics with different Ba contents were investigated. SBBT fabricated by means method combining Sol-Gel process ordinary firing. The morphology will change when Ba2+ is doped in SrBi4Ti4O15 (SBTi), which lead to structure ferroelectric properties. SBTi BaBi4Ti4O15 (BBTi) characterized scan electron microscopy (SEM). With increase doping contents, sintering temperature decreases, 1120°C for 1060°C BBTi. BBTi contain more...
{0.75SrBi2Ta2O9-0.25Bi3TiTaO9}(SBT-BTT) thin films were prepared by the modified metalorganic solution deposition (MOSD) technique. The microstructure and ferroelectric properties of SBTBTT studied. SBT-BTT produced at 750°C. grain size surface roughness showed significant enhancement with an increase in annealing temperatures. It is found that have good properties. measured remanent polarization values for SBT-BTT, SBT BTT capacitors 15, 7.5 4.8μC/cm2, respectively. coercive field was...
The uniform Sr0.5Ba0.5Bi4Ti4O15 thin films were prepared using a modified Sol-Gel technique and the influence of precursor on microstructure characterization studied. stability uniformity solution is key issue for quality films. Ethanolamine an effective complexation reagent Bi3+, which could moderate acidity precursor. When pH value concentration was about 3.5 0.35M respectively, smooth be obtained. Bi-layered perovskite structure formed at 750°C. morphology grains in elliptoid grain size...