A5004171028- Ferroelectric and Piezoelectric Materials
- Advanced Sensor Technologies Research
- Scientific Measurement and Uncertainty Evaluation
- Acoustic Wave Resonator Technologies
- Advanced Sensor and Energy Harvesting Materials
- Calibration and Measurement Techniques
- Microwave Dielectric Ceramics Synthesis
- Nuclear Materials and Properties
- Semiconductor materials and devices
- Multiferroics and related materials
- Electronic and Structural Properties of Oxides
- Sensor Technology and Measurement Systems
- Advanced Thermoelectric Materials and Devices
- Advanced MEMS and NEMS Technologies
- Magnetic Properties and Synthesis of Ferrites
- Dielectric properties of ceramics
- Dielectric materials and actuators
- Rare-earth and actinide compounds
- Gas Sensing Nanomaterials and Sensors
- Full-Duplex Wireless Communications
- Conducting polymers and applications
- Magnetic Properties and Applications
- Refrigeration and Air Conditioning Technologies
- Electrical and Thermal Properties of Materials
- Microfluidic and Capillary Electrophoresis Applications
Hohai University
2025
Xi'an Jiaotong University
2015-2024
Panzhihua University
2024
China XD Group (China)
2014-2019
Science and Technology on Surface Physics and Chemistry Laboratory
2011-2017
Ministry of Education of the People's Republic of China
2014
Northeastern University
1998-2001
Philips (United States)
2001
Atomic-resolution image of a graphene sheet synthesized by remote plasma-enhanced atomic layer deposition at low temperatures.
The potential in a synaptic simulation for neuromorphic computation has revived the research interest of resistive random access memory (RRAM). However, novel applications require reliable multilevel switching (RS), which still represents challenge. We demonstrate this work achievement HfO2-based RRAM devices by performing Al doping and postdeposition annealing (PDA). Transmission electron microscopy operando hard X-ray photoelectron spectroscopy results reveal positive impact on formation...
Abstract Accurate temperature measurements can efficiently solve numerous critical problems and provide key information. Herein, a flexible micro-three-dimensional sensor, with combination of platinum indium oxide to form thermocouples, is designed fabricated by microfabrication process achieve in situ real-time measurements. The stability reliability the sensor are greatly improved optimizing parameters, structural design, preparation methods. A novel structure better malleability designed,...
Abstract Flexible temperature sensors have been extensively investigated due to their prospect of wide application in various flexible electronic products. However, most the current only work well a narrow range, with at high or low temperatures still being big challenge. This proposes thermocouple sensor based on aerogel blanket substrate, temperature-sensitive layer which uses screen-printing technology prepare indium oxide and tin oxide. It has good sensitivity, test sensitivity reaching...
O<sub>3</sub>-based interface engineering dominates implementations of analog memory and synaptic simulation using reliable Pt/HfO<sub>2</sub>/TiN RRAM.
An In₂O₃/ITO thin film thermocouple was prepared via screen printing. Glass additives were added to improve the sintering process and increase density of films. The surface cross-sectional images indicate that both grain size densification ITO In₂O₃ films increased with in annealing time. thermoelectric voltage 53.5 mV at 1270 °C hot junction. average Seebeck coefficient calculated as 44.5 μV/°C. drift rate 5.44 °C/h a measuring time 10 h °C.
Abstract. Drought propagation time (TP) and lag (TL) from meteorological to hydrological droughts are two important indicators for characterizing drought propagation, thus, reasonable estimates of these conducive improve the prediction droughts. However, traditional quantification methods mostly based on moving correlations whole hydro-meteorological series, including misinformative non-drought periods. Particularly karst regions, flashy regime rainfall-runoff relationship during periods...
Hydraulic oil is essential for machine operation, but water contamination can impair its functionality and lead to mechanical damage. Traditional dehydration methods, such as evaporation, are energy-intensive may degrade...
Planar microstrip Y-junction circulators have been fabricated from metallized 130-/spl mu/m-thick self-biased strontium hexaferrite ceramic die, and then bonded onto silicon die to yield integrated circulator circuits. The impedance matching networks needed transform the low-impedance outputs were deployed on low-loss alumina or glass dielectrics minimize circuit losses. These magnetically show a normalized isolation insertion loss of 33 2.8 dB, respectively, 1% bandwidth for an 20 dB....
A tungsten-rhenium thin film thermocouple is designed and fabricated, depending on the principle of thermal-electric effect caused by high temperature. The characteristics thermocouples in different temperatures are investigated via numerical analysis analog simulation. working mechanism thermo-electric features analyzed simulation results. Then fabricated calibrated. calibration results show that based material achieve ideal static work well practical applications.
In recent years, the preparation of flexible thermoelectric generators by screen printing has attracted wide attention due to easy processing and high-volume production. this work, we propose an n-type Ag
Lead-free ferroelectric un-doped and doped K0.5Na0.5NbO3 (KNN) films with different amounts of manganese (Mn) were prepared by a chemical solution deposition method. The thicknesses all are about 1.6 μm. Their phase, microstructure, leakage current behavior, electrical properties investigated. With increasing the Mn, crystallinity became worse. Fortunately, improved due to decreased density after Mn-doping. study on behaviors shows that dominant conduction mechanism at low electric field in...
Lead‐free ferroelectric K 0.5 Na NbO 3 (KNN) thick films with improved performances have been successfully prepared by polyvinylpyrrolidone‐modified chemical solution deposition method. The KNN were obtained pyrolyzing at different temperatures and annealing 600°C. effect of pyrolysis temperature on structures electrical properties is studied. crystallinity decreased the increasing temperature, porous morphology observed in pyrolyzed 480°C. However, film 330°C dense. With analysis X‐ray...
Here, we have reported a new thermocouple with high thermoelectric voltage of 410.3 mV, which can be used stably in temperature.
Flexible composite films with high power factors are the candidate for wearable energy harvesters, MWCNTs-SnSe/PEDOT:PSS ternary were fabricated by a vacuum filtration method. The effects of cold-pressing on morphology, Raman spectra, and thermoelectric (TE) properties studied. For cold-pressed MSPPD10 film, its conductivity Seebeck coefficient both increase increasing temperature. results show that PF is enhanced to 166.5 μW m−1 K−2 which 2.8 times (59.35 K−2) film without treatment....
Whether PuO2 could be further oxidized is a very important topic in Pu chemistry. Experiments on its oxidation have not completely demonstrated the existence of higher oxides. Here, reaction energies with series molecules and their radiation-induced radicals products are systematically predicted using first-principles calculations. The results show that F2 can react PuO2, indicating higher-valence PuO2-based materials. Moreover, formations PuO2.25, PuO2.25H0.25, PuO2.5H0.5 by reactions O•...
A thermal stress range analysis of tungsten-rhenium thin film thermocouples based on ceramic substrates is presented to analyze the falling off and breakage problems caused by mismatch stresses in (TFTCs) substrate, nano-indentation experiments are done measure calculate compare with simulation results. Optimal design fabrication TFTCs reported. Static high temperature tests carried out, which show optimization can effectively reduce damage mismatch.
In2O3/ITO thin film thermocouples for high temperature measurement (up to 1250 °C) were prepared by radio frequency magnetron sputtering method with different annealing temperatures from 1100 °C °C. The changes microstructure characteristics and the thickness of investigated as a function sintering in range -1250 time 2 hrs 10 at 1200 using XRD SEM techniques. thermoelectric output was measured its results indicated that this thermocouple had steady constant voltage room 1247 oC. Seebeck...
The energetics of some typical nonmetallic impurity atoms (H, He, B, C, N, O, F, Ne, Cl, Ar, Kr, and Xe) in PuO2 are calculated using a projector augmented-wave method under the framework density functional theory. Hubbard parameter U van der Waals corrections used to describe strongly correlated electronic behavior f electrons Pu weak interactions rare gases, respectively. Three incorporation sites atoms, that is, octahedral interstitial, O vacancy, vacancy sites, considered. results...
SrTiO 3 /ZnTiO heterolayered thin films were fabricated by spin coating Sr–Ti and Zn–Ti sol–gel precursors on fused silica substrate. The ZnTiO coated alternatively to form ABAB films. thickness of individual layers was tailored controlling the layers. structure characterization showed independent each layer while microwave dielectric properties optical band gaps can be tuned changing configuration. effects configuration studied.
The self-supporting and flexible Cu2S/poly(3,4-ethylene dioxythiophene):-poly(styrene sulfonate) (PEDOT:PSS) composite thermoelectric films were prepared by vacuum filtration method. effects of Cu2S content the pressure cold-pressing on properties studied. electrical conductivities Cu2S/PEDOT:PSS would decrease with increase temperature, while Seebeck coefficients had an inverse tendency. At same time, will increases respectively. maximum power factor (PF) was 56.15 μWm-1K−2 when 10 wt% at...