A5047295507- Advanced Materials and Mechanics
- Vibration Control and Rheological Fluids
- Additive Manufacturing Materials and Processes
- Advanced Sensor and Energy Harvesting Materials
- Advanced Surface Polishing Techniques
- Multiferroics and related materials
- Innovative Energy Harvesting Technologies
- Ferroelectric and Piezoelectric Materials
- Dielectric materials and actuators
- Additive Manufacturing and 3D Printing Technologies
- Nonlocal and gradient elasticity in micro/nano structures
- Particle Dynamics in Fluid Flows
- Ultrasound and Cavitation Phenomena
- Reinforcement Learning in Robotics
- Adversarial Robustness in Machine Learning
- Micro and Nano Robotics
- Machine Learning and ELM
- Model Reduction and Neural Networks
- Advanced materials and composites
- Electrostatic Discharge in Electronics
- Force Microscopy Techniques and Applications
- Advanced Machining and Optimization Techniques
- Semiconductor materials and devices
- Manufacturing Process and Optimization
- Structural Engineering and Vibration Analysis
Xi'an Jiaotong University
2019-2025
Huazhong University of Science and Technology
2024-2025
GlobalFoundries (Singapore)
2025
Agency for Science, Technology and Research
2022-2024
Defence Science and Technology Agency
2024
Iowa State University
2022
Nanyang Technological University
2000-2020
Rolls-Royce (Germany)
2019-2020
Chinese University of Hong Kong
2019
University of Hong Kong
2019
In this paper, SU-8 EPON-based photoresist (PR) polymerization optimization and its possible microfluidic MEMS applications are reported. First, the results of under UV lithography The parameters which could have an influence on quality were chosen optimized by a three-level, L9 orthogonal array Taguchi method. By optimization, optimal parameter range weighted per cent final determined. For SU-8-5 SU-8-50, many microstructures with thicknesses more than 100 500 µm aspect ratios 20 50...
Because of the flexoelectric effect, dielectric materials usually polarize in response to a strain gradient. Soft are good candidates for developing large gradient because their deformability. However, they always suffer from lower coefficients compared ceramics. In this work, flexoelectriclike effect is introduced enhance effective flexoelectricity polydimethylsiloxane bar. The realized by depositing layer net charges on middle plane bar form an electret. Experiments show that enhancement...
Magnetically driven small‐scale soft robots are promising for applications in biomedicine, due to their fast, programmable deformation, and remote, untethered actuation accomplish complicated tasks. Although diverse materials designs have been proposed magnetic with shape transformation, it is still challenging produce strong by a small field. Inspired arthropod species, millirobots joint structures 3D printing hydrogels developed. The joints can turn the bending deformation into folding...
In dielectric materials, due to the flexoelectric effect, a large inhomogeneous deformation can break or significantly alter inversion symmetry of material and induce net polarization. Such phenomenon is distinctive comparing other forms electromechanical coupling, such as piezoelectricity electrostriction, in that it an intrinsic universal effect whose strength scales up with decrease sample size. Research works past decade indicate emergence flexoelectricity not only provides new way...
Under a vibrating ultrasonic horn device, intense cavitation occurs but is restricted to small volume due strong attenuation effects. In this study, milli-scale channels were introduced under the horn. The effect of on development and intensity within explored. High speed videography up 100,000 fps acoustic signal acquisition through hydrophone conducted. Cavitation was observed increase as compared free field condition. Bubble density increased with decrease in channel diameter rise...
Abstract Electrets are commonly used charged insulators that generate a quasi‐permanent electric field. However, when conventional electrets come into direct contact with semiconductors, the energy level mismatch at interface results in low memory speed and high consumption of electret devices due to both charge injection storage being non‐conducive. To address this, n‐type semiconductor N,N′‐dioctyl‐3,4,9,10‐perylene tetracarboxylic diimide (C 8 ‐PTCDI) is converted C ‐PTCDI (D) via oxygen...
Shape memory materials (SMMs) are usually referred to as with the ability recover original shape via certain thermal stimulations, such temperature increase. Such behaviors achieved thermally exhibit slow response due constraint of conductivity, leaving a big challenge for situations and speed requirements. In this work, different from previous mechanisms, an athermal fast-response effect (SME) based on manipulation magnetization profiles is introduced both experimentally theoretically....
Flexoelectricity, in which a dielectric material develops an electrical polarization response to mechanical strain, is important degree of freedom for designing actuators with simpler structure and higher performance. Its applications are usually limited the nanoscale, though, due phenomenon's inherent size dependence. This study presents $i\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}v\phantom{\rule{0}{0ex}}e\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}s\phantom{\rule{0}{0ex}}e$...
Magnetic Arthropod Millirobots Inspired by arthropod species in nature, magnetic millirobots have been fabricated of 3D-printed hydrogels. The joint structure can induce folding deformation and decrease the energy consumption. Multimodal locomotion programmed shape transformation realized a six-armed millirobot. millirobot manipulate foreign objects porcine organs ex vivo with assistance endoscope imaging. More information be found article number 2100139 Qian Deng, Jingda Tang, co-workers.
Harnessing slowly varying or quasi-static magnetic fields, which typically lack the power to light an LED, devices with higher demands seems be impossible if no additional is supplied. Obviously, key overcoming this challenge achieve passive conversion from low-power inputs into high-power outputs. Here, we propose that snap-through buckling─a mechanical instability phenomenon─within a magnetoelectric metamaterial enables power-up conversion. Our experimental results indicate instantaneous...
In our previous work [Chen et al., Int. J. Solids Struct. 246–247, 111607 (2022)], we designed a flat arch structure for hard magnetic soft material. It used snap-through instability remote actuation and large deformation in small field range (25–170 Oe). The ratio of the magnetic-driven deflection to length was about 0.05. To improve this ratio, high magneto elastomers, which expanded from 0.05 0.5, increasing it by an order magnitude. However, raising height extended driving while...