A5087435573- Advanced machining processes and optimization
- Magnetic Field Sensors Techniques
- Magnetic properties of thin films
- Advanced Surface Polishing Techniques
- Maritime Navigation and Safety
- Magnetic confinement fusion research
- Adhesion, Friction, and Surface Interactions
- Cultural Heritage Materials Analysis
- Advanced Machining and Optimization Techniques
- Currency Recognition and Detection
- Digital Media Forensic Detection
- Quantum and electron transport phenomena
Harbin Engineering University
2024
Magnetorheological finishing (MRF) technology is characterized by its high convergence rate and minimal subsurface damage as advantages. However, the non-Gaussian type tool influence function (TIF) it generates may cause mid-frequency errors oriented surface texture issues. precession (MRPF) capable of generating Gaussian-like removal functions, lacks a clearly defined model. This study acquired polishing spots in tilted polishing, discrete precession, continuous modes via fixed-point...
Magnetorheological polishing (MRF) has emerged as a critical non-contact sub-aperture technology due to its notable attributes of high precision and minimal damage. However, MRF's inherent D-shaped removal function leads reduced convergence efficiency surface form error introduces mid-spatial-frequency (MSF) waviness. To address these challenges, we propose magnetorheological precession finishing (MRPF) technology, which ingeniously combines MRF with bonnet generate Gaussian-like function. A...
Accurately measuring weak electric currents in the order of mA a non-invasive manner is crucial yet challenging for industrial electronics. In this work, we first fabricated low-noise magnetic field sensor chips based on tunneling magnetoresistive (TMR) effect. A composite free layer and three-step annealing process were used to improve performance, resulting sensitivity 30 V/V/T (3 mV/V/Oe), non-linearity below 0.5%, reduce noise density from 1.4 μV/V/√Hz 0.7 at 1 Hz, comparison with...
The high sensitivity and MEMS-compatible process of tunneling magnetoresistance (TMR) sensors provide great opportunities to develop high-resolution magnetic field detection imaging systems. In this work, we designed a (MFI) system based on TMR detect the uniaxial components banknotes including US dollars (USD) Chinese Yuan (CNY), which clearly reveals distribution anti-counterfeiting markers inside banknotes. Measurement results USD show that ink signal is around μT level, person portraits...