A5075859464- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Acoustic Wave Resonator Technologies
- Computational Geometry and Mesh Generation
- Electromagnetic Scattering and Analysis
- Seismology and Earthquake Studies
- Topological Materials and Phenomena
- Advanced Numerical Methods in Computational Mathematics
- 2D Materials and Applications
- Magnetic Bearings and Levitation Dynamics
- Advanced ceramic materials synthesis
- Magnetic Properties and Applications
- Seismic Waves and Analysis
- Earthquake Detection and Analysis
- Liquid Crystal Research Advancements
- Graphene research and applications
- Force Microscopy Techniques and Applications
- Advanced Numerical Analysis Techniques
- Electromagnetic Simulation and Numerical Methods
- Advanced MEMS and NEMS Technologies
- Material Properties and Applications
- Mechanical and Optical Resonators
- Metamaterials and Metasurfaces Applications
- Microwave Engineering and Waveguides
- Bone Tissue Engineering Materials
University of Hong Kong
2013-2023
HKUST Shenzhen Research Institute
2023
Geophysical Laboratory
2017-2023
Changsha University of Science and Technology
2022
Shenzhen Technology University
2017
Hong Kong University of Science and Technology
2013-2017
Shanghai University
2017
Phase field simulations were conducted to study the influence of dislocation walls on domain configuration and polarization switching behavior a ferroelectric single crystal. The simulation results show that depend highly spacing in wall. properties can be greatly improved by reducing coercive meanwhile enhancing remanent if an appropriate density dislocations is introduced at high temperature. phase also put insights into mechanism switching.
Phase field simulations are conducted to investigate the micro-structural signature and macro-response of a ferroelectric single crystal with domain pinning depinning phenomena by dislocation arrays. It is shown that due presence arrays, polarizations antiparallel an applied can survive under small amplitude field. The residual serves as pre-existing nucleus during following macroscopic switching via only wall motion. pinned will be depinned when external electric exceeds critical value,...
The strong coupling between crystal structure and mechanical deformation can stabilize low-symmetry phases from high-symmetry or induce novel phase transformation in oxide thin films. Stress-induced structural films has drawn more attention due to its significant influence on the functionalities of materials. Here, we discovered experimentally a stress-induced cubic-to-hexagonal perovskite nanothin barium titanate (BaTiO3) with special thermomechanical treatment (TMT), where BaTiO3 under...
The unusual temperature-induced switching behavior in a ferroelectric single crystal with dislocation arrays is investigated by using phase field simulations. results show that the influence of temperature on hysteresis loop dependent arrays. In presence arrays, dependence coercive different from dislocation-free ferroelectric. increases when room to critical temperature, which attributed pinning domains Above both and remnant polarization decrease temperature. It found double loops can be...
Earthquakes are disasters all over the world. Every time human civilization occurred and developed in past on earth with a history of 5 billion years, it was destroyed by major earthquake. Therefore, is common global earthquake science to study prediction prevention. We call United Nations establish worldwide center for science. Only then will be possible organize support seismologists world truly predict earthquakes, save beings, earth. Otherwise, scientists who really earthquakes track...
Abstract Recently, experimentally available Fe 3 GeTe 2 (FGT) monolayer has attracted tremendous research interest due to its long-range ferromagnetic (FM) order. Here, we systematically study the magneto-electronic and electric contact properties of FGT-based van der Waals (vdW) heterostructures integrated by arsenene (As) with multiple stacking patterns. The low binding energy (−117.69 −52.69 meV atom −1 ) proves their highly geometric stability, high magnetized (91.61–213.61 meV/unit...
In this paper, we propose GLC global and local wave field cloud computing method for electromagnetic etc multiply modeling massive data communication management. The advantages of the are as follows: 1. does not need artificial truncated boundary absorption condition on it; 2. There is no big size matrix to be solved in method; 3. Global Local GL clouding consistent combination. 4. high performance distribute parallel computing. Up now, there any physical experiment study invisible cloak....
In this paper, we propose a new advanced Global Integral and Local Differential GILD Modeling Inversion for Magnetic Levitation, call which as AGILD MagLev. We derive EM differential integral strip equation. used it on the boundary MAXWELL equation in internal domain to construct AGILD. A 9-cells local weak regularizing inversion scheme is proposed constructed inversion. The fast modeling reasonable stable preserved GILD's merits simpler than GILD. Recently, developed novel powerful...
With nonlinear effects in the electromechanical oscillators, subharmonic oscillations can be generated, whose period is multiple that of driving signal. Such possess states with identical amplitude and evenly offset phases. Their phases used to encode information which was proposed early half a century ago name "Parametron." Until recently, tripled drive just realized through enhanced energy transfer between modes ratio eigenfrequencies close 1: 3 micro-scale mechanical resonator. In this...
Numerical simulation is widely applied in the field of electromagnetic material research, with meshing method a key to determine calculation efficiency. In 2D problems, structural usually refers some quadrilateral which conforms outline body investigation. To mesh quadrilaterals, looping most applied. algorithms, splitting lines are used cut number subdomains preferably be convex. The line algorithm core part algorithm. Traditionally, determined by optimizing several criteria manner...
This paper adopts the surface triangle and Curved quadrilateral mesh subdivide boundary surfaces of conductor. For discretization integral equation electromagnetic field in using moment method, high order triangular basis functions curved base function are used. Further, relationship between dispersion charge density higher through coordinate transformation methods, singularity integrals is removed. The key numerical solution frequency domain equations to calculate impedance elements. When...
In paper [1] in 1975, we proposed 3D elastic problem's Finite Element Method. We used a novel method to construct the high accurate element which has 6 curve surfaces and 20 nodes, independently, is called isoparametric west world. particular, 1973, we, first world, discovered super convergence phenomena of stress displacement Gauss points our nodes (isoparametric element) [1], i.e., have o(h4) convergent rate element. this paper, develop Stochastic SGILD Electromagnetic Elastic Joint Method...