A5031913604- Dielectric materials and actuators
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Advanced Sensor and Energy Harvesting Materials
- Advanced Battery Technologies Research
- Electric Motor Design and Analysis
- Sensorless Control of Electric Motors
- Conducting polymers and applications
- Microgrid Control and Optimization
- Ferroelectric and Piezoelectric Materials
- Electric and Hybrid Vehicle Technologies
- Electric Vehicles and Infrastructure
- Electromagnetic wave absorption materials
- Power Systems and Renewable Energy
- Synthesis and properties of polymers
- Thermal properties of materials
- Dielectric properties of ceramics
- Carbon Nanotubes in Composites
- Supercapacitor Materials and Fabrication
- Polymer Nanocomposites and Properties
- Magnetic Bearings and Levitation Dynamics
- Silicon Carbide Semiconductor Technologies
- Phase Change Materials Research
- Refrigeration and Air Conditioning Technologies
- Silicone and Siloxane Chemistry
Chinese Academy of Sciences
2012-2024
Institute of Electrical Engineering
2013-2024
Shanghai Polytechnic University
2012-2024
Yunnan University
2024
Harbin Institute of Technology
2024
South China Agricultural University
2010-2023
Nanjing Medical University
2022-2023
Jiangsu Province Hospital
2022-2023
University of Chinese Academy of Sciences
2019-2023
Minjiang University
2022
Abstract Barium titanate/polyimide (BaTiO 3 /PI) nanocomposite films with high dielectric permittivity (20), breakdown strength (67 MV m −1 ), and thermal stability are prepared by an in‐situ polymerization process. A very thin polymer layer (about 5 nm) is coated on the surface of nanosized BaTiO particles to form a core–shell‐like structure, which can guarantee homogeneous dispersion in PI matrix. It confirmed that structure originates from both electrostatic attraction between precursor...
Surface of BaTiO3 particle was chemically modified using silane coupling agent (KH550) in order to improve its compatibility with polyvinylidene fluoride (PVDF) matrix polymer, and therefore, expectable microstructure dielectric property the BaTiO3/PVDF composites were acquired. Infrared spectra reveal an obvious interaction between PVDF induced by addition KH550 agent, also confirmed observation morphology fractured surface composite when concentration is around 1.0wt%. Crystal lattice...
Novel polyaniline decorated reduced graphene oxide (rPANI@rGO) two-dimensional (2D) hybrids sheets were successfully prepared by in situ polymerization of aniline on (GO) and successive reduction hydrazine. PANI is heavily reduced, thus it electrically insulating. The hybrid used as a novel filler for high performance poly(methyl methacrylate) (PMMA) nanocomposites. Our results show that, when compared with the PMMA/rGO composites, PMMA/rPANI@rGO nanocomposites not only dielectric constant...
To disclose an effect of ceramic particle size on dielectric properties BaTiO3/ poly(vinylidene fluoride) (BT/PVDF) composites at low frequency, the BT/PVDF loaded with different diameter BT particles same volume concentration were studied wide frequency ranges from 10−1to107Hz. A significant low-frequency permittivity increase in nanocomposite was noticed, which not reported previously. The authors considered that marked aggrandizement interface and dipole polarization is charged permittivity.
Most of the existing finite-control-set model predictive current control (FCS-MPCC) schemes for multi-phase motor suffer from heavy computational burden, inevitable low-order harmonic currents, and variable switching frequencies. Some virtual voltage vector (V <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> )-based FCS-MPCC can effectively suppress by zeroing subspace on average during one sampling period. However, they fail when has a...
Ultra-high volumetric performance electrochemical double layer capacitors based on high density aligned nano-porous microwave exfoliated graphite oxide have been studied. Elimination of macro-, meso-, and larger micro-pores from electrodes controlling the nano-morphology results in very capacitance, energy, power values. As a service to our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized for online...
Upright carbon fiber (CF) filled ferroelectric poly(vinylidene fluoride) (PVDF) composites were prepared via a simple blending and hot-molding technique. The dielectric properties of the CF/PVDF as function volume fraction CF, temperature, frequency studied. constants decrease slowly with increasing rise gradually CF contents in composites. As is up to 0.074, an abrupt increase constant occurs, which attributed formation conductive network matrix. percolation theory, microcapacitor model,...
This paper discusses the principle and electrical characteristics of fuel cell, designs an innovative hybrid power system, proposes a new DC/DC converter scheme to combine cell with storage system. An effective for is obtained by analyzing high efficient topology as well phase shifted pulse-width modulation. Through comparing several different control modes converters, 75-kW prototype system constructed, moreover, which steady-state operating are illustrated discussed in detail. At last,...
Multiwall carbon nanotube (MWNT) with different aspect ratio (AR) was dispersed into ferroelectric polyvinylidene fluoride (PVDF) to fabricate the MWNT/PVDF nanocomposites. An increase of dielectric constant increasing AR value observed in composites. Meanwhile, result showed that change percolation threshold displayed same rule critical exponent, and both them increased some extent, which provides an effective simple way describe transition practical composites neighborhood scaling theory.
Nanocomposites consisting of methylvinyl silicone rubber (VMQ) with excellent elasticity as polymer matrix and multiwall carbon nanotube (MWNT) large slenderness ratio high conductivity filler were fabricated by a solution method subsequently hot pressing technology. Studies on dielectric property resistance-pressure sensitivity the MWNT/VMQ composites showed that there was giant constant significant concentration MWNT near low percolation threshold, fc≈0.012. After composite applied an...
In China, the low egg production rate is a major challenge to Muscovy duck farmers. Hypothalamus and ovary play essential role in of birds. However, there are little or no reports from these tissues identify potential candidate genes responsible for White ducks. A total 1,537 laying ducks were raised; traits which include age at first (days), number eggs 300 d, 59 wk recorded. Moreover, 4 lowest (LP) highest producing (HP) selected age, respectively. To understand mechanism regulation, we...
We report a new kind of binary polymer [polypropylene (PP) and polyvinylidene fluoride (PVDF)] matrix composite containing surface modified carbon black (CB) by employing titanate coupling agent (NDZ-102) silane (KH550). Significant enhancement dielectric properties (conductivity permittivity) positive temperature coefficient effect (PTC) were observed in the CB-PP/PVDF composites when concentration CB reaches critical value. These could be attributed mainly to bridge-linked role agents...
Composites of polyvinylidene fluoride (PVDF) filled with metallic particles nickel (Ni) were prepared via a blending and hot-molding technique. Rescaled temperature dependence electric dielectric behaviors Ni/PVDF composites studied at wide content ranges. Results show that there is significant positive coefficient effect giant constant as the concentration Ni near percolation threshold. The nonuniform distribution filler in PVDF host observed from scanning electron microscope micrograph...
As an electrically conducting filler, multiwall carbon nanotube (MWNT) with a great slenderness ratio was introduced into poly(vinylidene fluoride) (PVDF) to form the MWNT/PVDF nanocomposites. Dielectric properties of these composites before and after stretching were studied at wide frequency ranges from 102to107Hz. The results showed that dielectric constant conductivity always lower than those stretching. In high concentration MWNT, decreases in very significant. Rearrangement MWNT along...
A new topology Bi-directional Z-source inverter is proposed. It can overcome the uncontrollable and unstable limitations of in DCM mode. The operational principle, design guidelines networks power devices are provided. DC clamp snubber circuit developed to limit voltage spike on device. Power loss analysis 3-D for system presented. prototype 55kVA bi-directional designed verify principle performance proposed topology.
Abstract Background The age at first egg (AFE), an important indicator for sexual maturation in female chickens, is controlled by polygenes. Based on our knowledge of reproductive physiology, 6 genes including gonadotrophin releasing hormone-I ( GnRH-I ), neuropeptide Y NPY dopamine D2 receptor DRD2 vasoactive intestinal polypeptide VIP receptor-1 VIPR-1 and prolactin PRL were selected as candidates influencing AFE. Additionally, the region between ADL0201 MCW0241 chromosome Z was chosen...
We reported a high performance hybrid asymmetric supercapacitor based on tailored electrodes.
Avian leukosis virus subgroup J (ALV-J) is an oncogenic retrovirus that has a similar replication cycle to multiple viruses and therefore can be used as model system for viral entry into host cells. However, there are few reports on the genes or microRNAs (miRNAs) responsible of ALV-J. Our previous miRNA RNA sequencing data showed expression miR-34b-5p was significantly upregulated in ALV-J-infected chicken spleens compared non-infected spleens, but melanoma differentiation-associated gene 5...