A5080686805- Acoustic Wave Resonator Technologies
- Multiferroics and related materials
- Phase-change materials and chalcogenides
- Magnetic Properties and Applications
- Chalcogenide Semiconductor Thin Films
- Ferroelectric and Piezoelectric Materials
- Non-Destructive Testing Techniques
- Ultrasonics and Acoustic Wave Propagation
- Magnetic properties of thin films
- Liquid Crystal Research Advancements
- Advanced Sensor Technologies Research
- Sensor Technology and Measurement Systems
- Electrical Fault Detection and Protection
- Magnetic Bearings and Levitation Dynamics
- Robotic Locomotion and Control
- Microwave Engineering and Waveguides
- Semiconductor materials and interfaces
- Geomagnetism and Paleomagnetism Studies
- Solar-Powered Water Purification Methods
- Electronic Packaging and Soldering Technologies
- Plant Surface Properties and Treatments
- Magnetic Properties of Alloys
- Image Enhancement Techniques
- Wireless Body Area Networks
- Advanced Semiconductor Detectors and Materials
Southwest University of Science and Technology
2018-2024
Inner Mongolia University of Technology
2019
Semiconductor Manufacturing International (Italy)
2012-2014
University of Chinese Academy of Sciences
2012
Coupling of multiphysics including electrodynamics, elastodynamics, magnetodynamics, and electromagnetic (EM) radiation is involved in the operating process bulk acoustic wave (BAW) antenna. There still no good way to design structure evaluate performance antenna theory. Therefore, dynamic coupling model constructed by uniting Newton's equation for wave, Maxwell's EM Landau–Lifshitz–Gilbert (LLG) spin with constitutive relations multiferroic materials discuss dispersion law permeability...
Implantable medical devices have been facing the severe challenge of wireless communication for a long time. Acoustically actuated magnetoelectric (ME) transducer antennas attracted lots attention due to their miniaturization, high radiation efficiency and easy integration. Here, we fully demonstrate possibility using only one bulk acoustic wave (BAW) ME antenna (BAW antenna) by describing correspondence between BAW components traditional transmitter in detail. Specifically, first that...
Magnetic sensors actuated by bulk acoustic wave (BAW) have attracted extensive attention due to the fact of their high sensitivity, GHz-level frequency, and small size. Different from previous studies, suppression energy loss improvement in conversion efficiency BAW magnetoelectric (ME) sensor were systematically considered during device design this work. Finite element analysis models material (magnetic composite), structure (ME heterostructure), (BAW ME magnetic sensor) established...
The conductive magnetic film will produce eddy current loss when it works in a high-frequency band, which reduce the performance of bulk acoustic wave magnetoelectric (BAW ME) devices. If is not taken into account devices modeling, models be seriously distorted. Therefore, combining Maxwell's equations with constitutive relations ME material, we define angle as figure merit to evaluate loss. Then rate potential energy and average radiated power are constructed, respectively. finite element...
In the fabrication of phase change random access memory (PRAM) devices, high temperature thermal processes are inevitable. We investigate stability Ge2Sb2Te5 (GST) which is a prototypical material. After process, voids material exist at interface between and substrate in initial open cell. This lower region found to be Te-rich layer. Phase devices fabricated different process conditions examined by scanning electron microscopy energy dispersive X-ray. It that hot-chuck nitrogen-doping...
Sensors actuated by bulk acoustic wave (BAW) have attracted lots of attention due to their high sensitivity, GHz-level frequency, and small size. Different from the previous studies, performance optimization magnetoelectric (ME) micro-heterostructure has been adequately considered in this work. We constructed a micro-level model magnetic sensor based on BAW ME coupling 2~5 layers micro-heterostructure. Its properties working under both direct current bias high-frequency alternating field...
Stacked piezomagnetic/piezoelectric heterostructure have attracted wide attention in antenna community for their potential application a subminiature device, and the number of layers has significant influence on performance especially when considering mass loading effect. However, its physical essence device structure optimization still keep unidentified. Therefore, analytical models energy radiated power bulk acoustic wave magnetoelectric (BAW ME) were constructed respectively to derive...
Abstract The impact of dust pollution on the sensitive components Micro-Electro-Mechanical Systems (MEMS) has been a hot topic in current reliability research. However, previous studies have rarely focused fundamental analysis influence pollutants MEMS, and these research results lack universality. This paper aims to present experimental electrical characteristic changes MEMS thermal resistors based friction, providing more detailed description explanation. Through friction experiments, we...
The effect of sand and dust pollution on the sensitive structures flow sensors in microelectromechanical systems (MEMS) is a hot issue current MEMS reliability research. However, previous studies contamination have only searched for sensor accuracy degradation due to heat conduction cover yet search other failure-inducing factors. This paper aims discover inducing factors failure under by using combined model simulation sample test method. mainly reflected size its thermistor, so this study,...
Ge2Sb2Te5 gap filling is one of the key processes for phase-change random access memory manufacture. Physical vapor deposition mainstream method film due to its advantages quality, purity, and accurate composition control. However, conventional physical process cannot meet gap-filling requirement with critical device dimension scaling down 90 nm or below. In this study, we find that deposit—etch—deposit shows better capability scalability than single-step process, especially at nano-scale...
In order to better study the electromagnetic radiation caused by stress in piezoelectric materials, source model materials is proposed finite difference time domain (FDTD) method./we propose a modeling of materials. Firstly, relationship between and voltage generated obtained through effect. Then compared lumped source, combined with FDTD update equation obtain material. The can be used calculate time-domain characteristics field including electric field, magnetic field. also lays foundation...
The piezoelectric and piezomagnetic properties of the magnetoelectric composite materials can be described by their constitutive relation. However, dispersion features material parameters are not reflected in It is necessary to construct a new relation involving coupling permittivity permeability. We establish exhibiting spatial temporal Maxwell's Equations with previous In fact, linear magnetic field flux density, as well electric displacement obtained replace generally suitable for...
The omnidirectional mobile robot has attracted lots of attention due to its flexibility compared traditional wheeled robots. However, there remains the problems motion control accuracy caused by start-up slip and error accumulation. In this work, we designed a three-wheel proposed method accurate moving suppressing calibrating deviation location through multi-node reference. angle distance errors were systemically analyzed calibrated. Firstly, proportional integral derivative was optimized....
FeGaB thin films have excellent magnetostrictive and soft magnetic properties. Unfortunately, severe eddy current loss (ECL) due to its low resistivity makes employment in energy-efficient structures challenging. Inserting insulating layers into is an effective technique suppress ECL enhance characteristics. Unresolved how exhaustively account for multiple contributing factors obtain the optimal composite materials design. In this study, simulation model of a (SMC) was constructed using...