A5026899894- Ultrasonics and Acoustic Wave Propagation
- Thermography and Photoacoustic Techniques
- Seismic Waves and Analysis
- Fatigue and fracture mechanics
- High voltage insulation and dielectric phenomena
- Geophysics and Sensor Technology
- Advanced Fiber Optic Sensors
- Structural Health Monitoring Techniques
- Analytical Chemistry and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Dielectric materials and actuators
- Acoustic Wave Phenomena Research
- Advanced MEMS and NEMS Technologies
- Non-Destructive Testing Techniques
- Seismology and Earthquake Studies
Shaoxing University
2024
Zhejiang University
2024
East China University of Science and Technology
2019-2023
Abstract This paper presents a novel design of micro-electro-mechanical-systems (MEMS) fluxgate sensor featuring double-layer induction coils. We utilize the micro-casting process which comprises two steps using deep reactive ion etching (DRIE) to etch coil molds and filling with molten Zn-Al alloy form has capacity fabricate intricate three-dimensional structures, overcoming limitations associated traditional electroplating process. The parameters core coils are optimized by Maxwell...
Ferroelectrets (also called piezoelectrets) are relatively young members in the family of piezo-, pyro- and ferroelectric materials. They exhibit ferroic behaviour phenomenologically undistinguishable from that traditional ferroelectrics, although materials per se essentially non-polar space-charge electrets with artificial macroscopic dipoles (i.e. internally charged cavities). Since ferroelectrets not only represent a scientific curiosity but also have great application potential, they...
The dispersion and multimode natures of guided waves bring forth difficulties in signal analysis, limiting the application traditional transducers. In this paper, we report design, fabrication characterisation transducers composed a polyvinylidene fluoride (PVDF) film with comb electrodes that can excite selectable single-mode for high-precision damage diagnosis localization. frequency response PVDF was analysed respect to geometric parameters electrodes, sound-field directivity determined...
The mode manipulation of Lamb waves plays an important role in damage detection and identification types, location, size. In this paper, we propose a composite phononic crystal (PC) plate with antisymmetric symmetric PCs for realizing conversion from A0 to S0 waves. theoretical analysis, numerical simulations, experimental validation are introduced the mechanism PC is systematically investigated. effect geometrical parameters on band structures first discussed. Then multi-physics field...
Abstract Multifunctional sensing layer (MSL) integrated with multiple sensors and transducers has diverse applications in structural health monitoring (SHM). However, current MSLs still suffer from using rigid units complicated fabrication methods. To address this, a type of MSL flexible multi-functional stretchable interconnectors was developed this study by laser-microfabrication (LMF) method high efficiency scalability. The strain sensor sensitivity 8.5, minimum detection limit 0.01%,...
Abstract MEMS seismographs are able to achieve lower noise performance by increasing the mass, reducing resonant frequency, and quality factor (Q), which allows they can be used in field of seismology. In this design, we propose a novel beam-mass design that incorporating two types buckling beams (BBs), one will exhibits negative stiffness characteristic when gravity proof mass is greater than its load, while other still positive characteristic. Through effective compensation, simulation...