A5014117384- Multiferroics and related materials
- Magnetic properties of thin films
- Magnetic Properties and Synthesis of Ferrites
- Ferroelectric and Piezoelectric Materials
- Electromagnetic wave absorption materials
- Metallic Glasses and Amorphous Alloys
- Physics of Superconductivity and Magnetism
- Advanced Sensor and Energy Harvesting Materials
- Advanced Measurement and Metrology Techniques
- Microwave Dielectric Ceramics Synthesis
- Ga2O3 and related materials
- Advanced Semiconductor Detectors and Materials
- Magneto-Optical Properties and Applications
- Electrical and Thermal Properties of Materials
- Metal and Thin Film Mechanics
- Surface Roughness and Optical Measurements
- Advanced Sensor Technologies Research
- Conducting polymers and applications
- Magnetic and transport properties of perovskites and related materials
- Sensor Technology and Measurement Systems
- Supercapacitor Materials and Fabrication
- Wireless Power Transfer Systems
- Layered Double Hydroxides Synthesis and Applications
- Dielectric properties of ceramics
- Advanced Measurement and Detection Methods
Chongqing University of Posts and Telecommunications
2018-2025
Shanghai University of Engineering Science
2021-2023
South China Normal University
2019-2020
National Engineering Research Center of Electromagnetic Radiation Control Materials
2013-2018
University of Electronic Science and Technology of China
2013-2018
State Key Laboratory of Electronic Thin Films and Integrated Devices
2014-2017
University of California, Berkeley
2016-2017
Chengdu University
2017
Berkeley Geochronology Center
2017
The increasing demands of fifth-generation (5G) communication technology and radar low-frequency detection systems for wave absorption, combined with the complexity variability practical applications, present significant challenges in achieving effective S-band multiband electromagnetic absorption materials. In this study, we flaky carbonyl iron (FCI) tunable surface defects carbon materials to fabricate heterogeneous interfaces defective shells via laser ablation technology, resulting...
Microwave-absorbing materials have attracted increased research interest in recent years because of their core roles the fields electromagnetic (EM) pollution precaution and information security. In this paper, microwave-absorbing material NiFe-layered double hydroxide (NiFe-LDH) was synthesized by a simple co-precipitation method calcined for fabrication NiFe-mixed metal oxide (NiFe-MMO). The phase structure micromorphology NiFe-LDH NiFe-MMO were analyzed, properties investigated with...
The ultrafast magnetic dynamics in compensated ferrimagnets not only provides information similar to antiferromagnetic dynamics, but more importantly opens new opportunities for future spintronic devices [Kim et al., Nat. Mater. 16, 1187 (2017)]. One of the most essential issues device design is searching low-power-consuming and high-efficient methods controlling domain wall. In this work, we propose use voltage-controlled anisotropy gradient as an excitation source drive wall motion...
Searching for new methods controlling antiferromagnetic (AFM) domain wall is one of the most important issues AFM spintronic device operation. In this work, we study theoretically motion an nanowire, driven by axial anisotropy gradient generated external electric field, allowing electro control in merit ultra-low energy loss. The velocity depending on magnitude and intrinsic material properties simulated based Landau-Lifshitz-Gilbert equation also deduced using dissipation theorem. It found...
A series of soft magnetic nanogranular CoFe-TiO2 films with different thicknesses were fabricated on Si substrates by co-sputtering CoFe and TiO2, the high frequency properties studied in details. X-ray diffraction analysis confirmed that nanocrystalline/amorphous composites. saturation magnetization as 21 kGs a ferromagnetic resonance (FMR) above 3 GHz obtained. It was found coercivity decreased steeply increase film thickness its minimum value about 6 Oe. In addition, variations FMR peak...
Abstract Aluminum nitride (AlN) films with low defect concentration were fabricated on Si substrates via RF magnetron sputtering system based Al-rich AlN (Al-AlN) targets. The effects of content structure, defects and photoelectric properties investigated by x-ray diffraction (XRD), high resolution transmission electron microscopy, photoelectron spectroscopy (XPS), temperature photoluminescence (PL), ultraviolet-visible spectra, current–voltage ( I – V ) capacitance–voltage C...
Although autocollimators enable noncontact measurement, their performance is limited in large-scale and long-distance applications because of errors caused by nonideal point light sources. Therefore, we analyze this type measurement error, including the error source equations used to describe irradiance distribution spot. A two-dimensional exponential approximation formula express compensate spot imaging errors. Experimental results show that could be reduced sixfold. proposed compensation...
The surface acoustic wave properties of piezoelectric/magnetostrictive layered structures consisting insulating ZnO and metallic Metglas with giant Δ E effect were studied based on a stable scattering matrix method. Only the first Rayleigh mode was found phase velocity between 2200 m/s 2650 m/s, maximum electro-mechanical coupling coefficient about 1%. It that center frequency ZnO/Metglas is highly sensitive change magnetic field, up to 440 MHz/Oe. However, there cutoff Young’s modulus for...
Flexible polymer-based magnetoelectric (ME) materials have broad application prospects and are considered as a new research field. In this article, FeCoSiB thin films were deposited on poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) substrate by DC magnetron sputtering. The structure of PVDF-TrFE/FeCoSiB heterostructure was similar to 2-2. Under bias magnetic field 70 Oe, the composites dramatically increased ME voltage coefficient high 111 V/cm⋅Oe at frequency about 85 kHz....
A calibration and measurement method based on an autocollimator a manual turntable are proposed to calibrate the mounting error of three-axis microelectromechanical system (MEMS) gyroscope in wearable inertial unit (IMU). In this system, with extension angle range ±9° setting mutual orthogonal structure two autocollimators, MEMS evaluation reference attitude data obtained, respectively, common acquisition serial port between camera IMU host computer is built. As result, time synchronized...
A 1000V, high-voltage planar micro-supercapacitor directly fabricated on a flexible polymer substrate has been demonstrated to successfully power an electrostatic cantilever microresonator for more than 1 minute. Direct-write laser engraving of Kapton tape (polyimide) was used fabricate each 200V rapidly in single step at ambient condition the first time. To actuate microresonator, five micro-supercapacitors were connected series attain 1000V output stable and safe manner. We that is highly...
Amorphous FeSiBC film with large magnetostriction and small magnetocrystalline anisotropy was deposited on the poled (110)-oriented Pb(Mg,Nb)O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> -PbTiO crystal substrate to form ferromagnetic/ferroelectric (FM/FE) heterostructures. It is shown that in-plane uniaxial magnetic (IPUMA)(>250 Oe) can be induced upon applying in situ biasing field along [001] direction during deposition. The IPUMA...
A wearable, highly sensitive, and wireless UV patch was successfully fabricated to record the accumulative radiation in terms of resistance.
With a series of 1.0 wt%Bi 2 O 3 – x wt% CuO ( = 0.0, 0.2, 0.4, 0.6, and 0.8) serving as sintering additives, Ni 0.23 Cu 0.32 Zn 0.45 Fe 4 ferrites are successfully synthesized at low temperature (900 °C) by using the solid state reaction method. The effects additives on phase formation, magnetic dielectric properties well structural gyromagnetic investigated. x-ray diffraction (XRD) results indicate that added Bi –CuO can lower synthesis significantly without appearing second phase....