A5081509962- Advanced Surface Polishing Techniques
- Metal and Thin Film Mechanics
- Piezoelectric Actuators and Control
- Advanced machining processes and optimization
- Adhesion, Friction, and Surface Interactions
- Soft Robotics and Applications
- High-Temperature Coating Behaviors
- Nanofabrication and Lithography Techniques
- Additive Manufacturing Materials and Processes
- High Entropy Alloys Studies
- Advanced MEMS and NEMS Technologies
- Muscle activation and electromyography studies
- Iterative Learning Control Systems
- Advanced Machining and Optimization Techniques
- Advanced Measurement and Metrology Techniques
- Tactile and Sensory Interactions
- Surface Treatment and Residual Stress
- Diamond and Carbon-based Materials Research
- Advanced materials and composites
Jilin University
2022-2025
Abstract Micro/nano hierarchical structures could endow materials with various surface functions. However, the multilayer and multiscale characteristics of micro/nano bring difficulties for their one step controllable fabrication. Accordingly, based on tip-based fabrication techniques, this study proposed a micro-amplitude vibration-assisted scratching (MAVAS) method by introducing periodically backward displacement into conventional process, which enabled synchronous creation microscale...
Micro/nano scratch testing is an effective technique for characterizing the mechanical properties and wear resistance of materials. In practical applications, most materials in equipment serve a vibration environment. However, scratching characteristics under environment have not been well investigated due to lack suitable instruments. To address this issue, article, we develop vibration-assisted micro/nano tester. Its working principle introduced, followed by designing analyzing platform....
To understand the relationship between damage mechanism of sapphire and anisotropic characteristic its crystal structure, in-situ scratch tests under confocal laser scanning microscope (CLSM) were performed along different directions C-plane wafer. The relation images normal/lateral forces was established. Craters in front contact region (CR) indenter material, subsurface special cracks separated from CR observed. As direction changed, these craters initiated propagated on left front, right...
Miniature actuators enable precision positioning and micro-manipulation in space-constrained environments, which is essential diverse industrial scientific fields. The piezoelectric represent one of the most advanced solutions for high motion output with miniaturized dimension weight. However, performance vertical poses a challenge miniature actuators. In this article, novel impact inertial actuator (IIPA) capable operating multiple directions was proposed. auxiliary friction method applied...
Ultrasonic vibration-assisted machining is a promising technique for improving the removability of materials, especially difficult-to-machine but material removal mechanism under ultrasonic vibration status still far from clear. Scratch testing generally employed to study mechanism, currently, there lack instruments capable performing scratch vibration. To address this gap, developed an tester that can perform quantitative (UVAS) materials. A prototype was designed and fabricated, followed...
The in situ scratch test inside the scanning electron microscope (SEM) could provide more detailed information about dynamic contact process between indenter and material surface. However, most of current testers can only perform qualitative tests, normal lateral forces not be measured. Accordingly, an tester with ability to observe scratching region SEM simultaneously measure forces, was developed. It mainly consisted three identical stick-slip piezoelectric actuators, a specially designed...