A5024097776- Advanced Sensor and Energy Harvesting Materials
- Innovative Energy Harvesting Technologies
- Energy Harvesting in Wireless Networks
- Tactile and Sensory Interactions
- Wireless Power Transfer Systems
- Muscle activation and electromyography studies
- Structural Health Monitoring Techniques
- Interactive and Immersive Displays
- Teleoperation and Haptic Systems
- Environmental Changes in China
- Infection Control and Ventilation
- Adhesion, Friction, and Surface Interactions
- Acoustic Wave Phenomena Research
- Dielectric materials and actuators
- Micro and Nano Robotics
- Robot Manipulation and Learning
- Advanced Materials and Mechanics
- Prosthetics and Rehabilitation Robotics
- Virtual Reality Applications and Impacts
- Blood disorders and treatments
- Brake Systems and Friction Analysis
- Non-Invasive Vital Sign Monitoring
- Analytical Chemistry and Sensors
- Respiratory and Cough-Related Research
- Advancements in Battery Materials
University of Hong Kong
2023-2025
Nanjing Normal University
2025
Hong Kong University of Science and Technology
2023-2025
City University of Hong Kong
2021-2024
City University of Hong Kong, Shenzhen Research Institute
2022
South China University of Technology
2020
Jiangsu Province Hospital
2020
The human somatosensory system is capable of extracting features with millimeter-scale spatial resolution and submillisecond temporal precision. Current technologies that can render tactile stimuli such high definition are neither portable nor easily accessible. Here, we present a wearable electrotactile rendering elicits both (76 dots/cm 2 ) rapid refresh rates (4 kHz), because previously unexplored current-steering super-resolution stimulation technique. For user safety, high-frequency...
Abstract Softening of piezoelectric materials facilitates the development flexible wearables and energy harvesting devices. However, as one most competitive candidates, ceramic‐polymer composites inevitably exhibit reduced power‐generation capability weak mechanical strength due to mismatch permittivity between two phases inside. Herein a flexible, air‐permeable, high‐performance piezoceramic textile composite with mechanically reinforced hierarchical porous structure is introduced. Based on...
Abstract Wearing masks has been a recommended protective measure due to the risks of coronavirus disease 2019 (COVID‐19) even in its coming endemic phase. Therefore, deploying “smart mask” monitor human physiological signals is highly beneficial for personal and public health. This work presents smart mask integrating an ultrathin nanocomposite sponge structure‐based soundwave sensor (≈400 µm), which allows high sensitivity wide‐bandwidth dynamic pressure range, i.e., capable detecting...
Haptic interactions in virtual reality (or the "metaverse") depend on ability of actuators to transmit sensations mechanoreceptors human skin. Similar considerations for foveated display, variations sensitivity our somatosensory system are important consider when designing haptic devices, i.e., design a with adjustable actuator size and density adapt different sensitivities distributions body. In this paper, we present wearable feedback device made thermoplastic urethanes an pneumatic...
In this Letter, we propose fractal-based piezoelectric energy harvesters (PEHs) for broadband scavenging. The introduction of fractal topology into transducers significantly alleviates the inherent limitation a narrow working bandwidth in commonly used cantilever PEHs. We conduct finite element analysis and experiments to exploit performance PEHs with different iteration times. Our findings reveal that higher-order structures generate an increased number eigenfrequencies as well modal...
Piezoelectric biomaterials have attracted significant attention due to the potential effect of piezoelectricity on biological tissues and their versatile applications. However, high cost complexity assembling domain aligning biomolecules at a large scale, disordered arrangement piezoelectric domains as well lack ferroelectricity in natural remain roadblock toward practical Here, utilizing weak van der Waals interaction layered structure small intestinal submucosa (SIS), exfoliation (vdWE)...
Sensor matrices are essential in various fields including robotics, aviation, health care, and industrial machinery. However, conventional sensor matrix systems often face challenges such as limited reconfigurability, complex wiring, poor robustness. To address these issues, we introduce a one-wire reconfigurable that is capable of conforming to three-dimensional curved surfaces resistant cross-talk fractures. Our frequency-located technology, inspired by the auditory tonotopy, reduces...
Insufficient power output and poor wearability present significant challenges to the real-world implementation of existing footwear energy harvesters. Herein, we propose a leaf-spring-based motion converter that converts low-frequency linear from footstep activity into high-speed rotation electromagnetic generator achieves high-performance wearability. The employs moderate stiffness leaf spring coupled with bearings transfer vertical displacement heel horizontal deformation absorb shock at...
Owing to the abundant land resources in intertidal zone, central coastal area of Jiangsu Province, China, has implemented large-scale activities such as tidal flat reclamation, aquaculture, and harbor construction, which have strongly affected local hydrodynamic environment evolution mudflat. In this study, based on 1984–2022 multisource remote sensing image data, an enhanced waterline method (EWM) combined with average slope (ASM) were adopted obtain spatial–temporal characteristics...
Inspired by hand push whisk blenders that are widely used in the kitchen, we here propose an energy harvester enables conversion of low-frequency translational vibration to high-speed rotations and further generates electricity via electromagnetic effect. The whisk-inspired (W-EH) is composed internal thread sleeve, external driving shaft, a spring, buoy. Compared with transmission approaches power generators, proposed design has superiority low cost, ultralow operation frequency (lower than...
Wrist-worn smart wearable devices, such as smartwatches and wristbands, are showing a high growth trajectory for decades in the technology market. However, most wrist-worn generators confined into watch bodies, which undermines functionality of wearables. In this study, we first characterize dynamic properties wrist motions propose four rules design energy harvesters. Based on rules, then present bionic piezoelectric harvester, composed an inner band, outer band with array, body. The...
Nature abounds with examples of superior mobility through the fusion aerial and ground movement. Drawing inspiration from such multimodal locomotion, we introduce a high-performance hybrid hopping flying robot. The proposed robot seamlessly integrates nano quadcopter passive telescopic leg, overcoming limitations previous jumping mechanisms that rely on stance phase leg actuation. Based identified dynamics, thrust-based control method detachable active aerodynamic surfaces were devised for...
Piezoelectric shunt damping is widely studied to suppress vibration of thin structures via shunting an attached piezoelectric transducer with electrical impedance. The synchronized switch on voltage (SSDV) technique can be used enhance the effect. However, SSDV not stable in weak excitation. Although some adaptive circuits have been developed tackle stability problems, additional monitoring devices are required provide feedback for strength signal adjusting series sources. We here present a...
In article number 2203565 by Ho-yin
Biopotential signals recorded by skin surface electrodes reflect the state of body and corresponding organ functions. These are commonly utilized in clinical diagnosis, health monitoring, sports training, human-computer interaction. However, utilization conventional on hairy causes a number issues, including suboptimal compliance, obstructed sweat secretion impaired tactile perception, making it difficult to obtain long-term high-fidelity biopotential recordings. Here, we propose an...
High friction and low wear are critical for enhancing output performance prolonging the service reliability of linear standing-wave piezoelectric motors. We here present a bioinspired volcanic-craters surface functionalized design to reduce rate improve after combining strength with softness crocodile skin. use laser texturing technology prototype fabrication perform systematic theoretical experimental analysis. Our findings demonstrate that textured micro-craters on slider can regulate...
There are many hemiplegic patients with hand dysfunction caused by stroke. Restoring function can effectively improve the quality of life patients. Traditional rehabilitation training strength and flexibility, but there few medical staff high workload, which may easily lead to unstable effect. Therefore, this letter designed a soft robot multiple modes. By analyzing natural movements human fingers, flexible exoskeleton finger driving unit designed. The kinematics derived achieve uniform...