A5060954630- Advanced Sensor and Energy Harvesting Materials
- Tactile and Sensory Interactions
- Silk-based biomaterials and applications
- Advanced Fiber Optic Sensors
- Hand Gesture Recognition Systems
- Conducting polymers and applications
- Muscle activation and electromyography studies
- Advanced Materials and Mechanics
- Advanced MEMS and NEMS Technologies
- Analytical Chemistry and Sensors
- Sensor Technology and Measurement Systems
- Interactive and Immersive Displays
- Non-Invasive Vital Sign Monitoring
- Metal Forming Simulation Techniques
- Modular Robots and Swarm Intelligence
- Adhesion, Friction, and Surface Interactions
- Micro and Nano Robotics
- Microfluidic and Capillary Electrophoresis Applications
- Teleoperation and Haptic Systems
- Biomimetic flight and propulsion mechanisms
- Nanomaterials and Printing Technologies
- Neuroscience and Neural Engineering
- Orbital Angular Momentum in Optics
- Offshore Engineering and Technologies
- Silkworms and Sericulture Research
Zhejiang Lab
2021-2024
National University of Singapore
2017-2023
Center For Remote Sensing (United States)
2022
Huazhong University of Science and Technology
2017-2019
China University of Petroleum, Beijing
2018
Beihang University
2017
Queen Mary University of London
2017
Hubei University
2017
Spider dragline silk exhibits a self-powered torsion actuation driven by humidity, potentially acting as novel torsional actuator.
A key challenge in electronic textiles is to develop an intrinsically conductive thread of sufficient robustness and sensitivity. Here, we demonstrate elastomeric functionalized microfiber sensor suitable for smart textile wearable electronics. Unlike conventional threads, our highly flexible stretchable up 120% strain possesses excellent piezoresistive characteristics. The by enclosing a liquid metallic alloy within the microtube. This embodiment allows shape reconfigurability robustness,...
The ability to sense heat and touch is essential for healthcare, robotics, human–machine interfaces. By taking advantage of the engineerable waveguiding properties, we design fabricate a flexible optical microfiber sensor simultaneous temperature pressure measurement based on theoretical calculation. exhibits high sensitivity 1.2 nm/°C by measuring shift high-order mode cutoff wavelength in short-wavelength range. In case sensing, shows 4.5% per kilopascal with fast temporal frequency...
Abstract Photoactuators have attracted significant interest for soft robot and gripper applications, yet most of them rely on free-space illumination, which requires a line-of-site low-loss optical path. While waveguide photoactuators can overcome this limitation, their actuating performances are fundamentally restricted by the nature standard fibres. Herein, we demonstrated miniature embedding fibre taper in polydimethylsiloxane/Au nanorod-graphene oxide photothermal film. The special...
Humanoid tactility has been boosting robotic intelligence in object recognition, dexterous manipulation, and human–robot interaction. For many artificial tactile sensors, especially those based on optical principles, inflexibility, bulkiness, monomodality limit their potential to function as humanoid skins. Herein, by embedding lab‐made nanofibers (ONFs) into elastomeric films, soft, flexible, thin (around 500 μm, similar human skin), multimodal (force thermosensitive) skins are achieved....
The metaverse, where the virtual and real world are fused, is currently under rapid development. Immersive vivid experience in metaverse requires human–machine interaction devices that, unlike those available, simultaneously imperceptible, convenient to use, inexpensive, safe. Herein, an optical‐nanofiber‐based gesture‐recognition wristband that can accurately recognize gestures be used interact with a robotic hand proposed realized. Requiring only three pressure sensors, simple structure,...
A flexible, stretchable, soft, and ultrathin wearable microtubular sensor that is highly sensitive to mechanical perturbations developed. The comprises a unique architecture consisting of liquid‐state conductive element core within soft silicone elastomer microtube. can distinguish forces as small 5 mN possesses high force sensitivity 68 N −1 . occupies tiny footprint 120 µm in diameter, approximately the cross‐section strand hair. Superior sensing capabilities are reported detect from...
Significance The current cleanroom-based soft lithography microfabrication process is complicated and expensive. There a need for low-cost, ready-to-use, modular components that can be easily assembled into microfluidic devices by users lacking proficiency or access to facilities. We present facile, efficient method of fabricating soft, elastic microtubes with different cross-sectional shapes dimensions. These used as basic building blocks the rapid construction various 2D 3D complex...
Tactile sensors are of great significance for robotic perception improvement to realize stable object manipulation and accurate identification. To date, developing a broad-range tactile sensor array with high sensitivity economically remains critical challenge. In this study, flexible capacitive array, consisting carbon nanotube (CNT)/polydimethylsiloxane (PDMS) film, parylene films, two polyimide (PI) films patterned electrodes, is facilely prepared. The CNT/PDMS acting as giant dielectric...
Abstract Plastic‐based electronics fill the gaps in conventional rigid silicon‐based devices toward applications soft interfaces. However, people future should also consider their potential environmental impact if tons of non‐degradable plastics are applied. Silk fibroin is a superior substrate alternative for development “green” electronics; whereas, brittleness silk films still major limitation impeding practical use. Different from widely reported polyphasic composite approaches, here...
Wearable sensors for smart textile applications have garnered tremendous interest in recent years and can enormous potential human machine interfaces digital health monitoring. Here, we report a soft capacitive microfiber sensor that be woven seamlessly into textiles strain measurement. Comprising dual-lumen elastomeric microtube liquid metallic alloy, the enables continual perception even after being completely severed. In addition, our is highly stretchable flexible exhibits tunable...
The torsional properties of spider dragline silks from Nephila edulis and pilipes spiders are investigated by using a torsion pendulum technique. A permanent deformation is observed after even small strain. This behaviour quite different that the other materials tested here, i.e., carbon fiber, thin metallic wires, Kevlar human hair. thus displays strong energy dissipation upon initial excitation (around 75% for strains more larger strain), which correspondingly reduces amplitude subsequent...
Wearable electronics brings forth revolutionary changes toward digital health monitoring. Skin conformable sensors enable real-time monitoring and non-invasive disease detection diagnosis. With the advancement of flexible hybrid materials, as discussed by Joo Chuan Yeo, Chwee Teck Lim, co-workers in article number 1902133, future personalized healthcare imperceptible is highly anticipated. Image Melanie Lee, Mechanobiology Institute.
The detection of subtle temperature variation plays an important role in many applications, including proximity sensing robotics, measurements microfluidics, and tumor monitoring healthcare. Herein, a flexible miniaturized optical sensor is fabricated by embedding twisted micro/nanofibers thin layer polydimethylsiloxane. Enabled the dramatic change coupling ratio under variation, exhibits ultrahigh sensitivity (-30 nm/°C) high resolution (0.0012 °C). As proof-of-concept demonstration,...
An improved torsion pendulum technique based on image processing is developed, which allows the measurement of torsional oscillation individual fibers. The composed a length fiber specimen and ring-shaped mass attached to one its ends. motion recorded with video camera overhead. method developed accurately calculate twist angle single fibers in pendulum. All images are firstly converted into matrices then edge detection applied at corresponding time obtain angle-time relation. frequency...
Multimodal tactile perception offers a new opportunity for object recognition based on surface properties. Herein, we present straightforward and low-cost approach to measuring hardness texture via modified force-sensitive fingertips of five-fingered robotic hand. Specifically, rigid indenter glass bead are attached the thumb index finger enable perception, respectively. After data being processed with fast Fourier transform principal component analysis, machine learning algorithms,...
One advantage of a resistive sensor array (RSA) with shared rows (M) and columns (N) is the reduced number wires from M × N + 1 to which can greatly lessen complexity burden on wearable electronic systems. However, drawback crosstalk current effect between adjacent elements, will lead high measurement error. Although several solutions have been reported, they mainly focus RSAs resistance (≥100 Ω). There lack research that addresses resistor values below 100 Ω. Here, we introduce new circuit...
Abstract The emergence of microfluidic techniques coupled with flow‐induced electrification has advanced the development innovative self‐powered sensors. However, selective detection target substances using these sensors is extremely challenging, owing to lack recognition elements in flow pathway. To overcome this, catalytic enzymes are immobilized on channel and concentration targets measured via monitoring streaming current. As an example, a urease equipped microtubular sensor developed...
Abstract One of the key challenges in soft robotics today is providing sensory feedback an object to a gripper. In this work, microtubular actuator which can not only interact but also sense its environment reported. As sensor enclosed within same structure as actuator, able conform well whole range actuating motion and provide accurate readings. proof concept, sensorized deployed microgripper. The microgripper demonstrates ability grip variety objects, including ant, without damaging it....
Smart textile applications have garnered enormous interest in recent years for digital health monitoring. Here, we propose a soft fabric data glove that can be mapped into gaming controller. The comprises stretchable microfiber sensors woven seamlessly textiles strain sensing. By integrating the sensor imperceptibly unto finger gloves and 9-axis inertial measurement unit (IMU) wrist, devise controller interpret wrist movements. Using open-source Unity3D platform, demonstrate translating to...
The complex environment of outer space brings great challenges to on-orbit servicing tasks. Here, we report Optum: a frustum-shaped multimodal tactile sensor for robot recognize the surface features satellite. Based on optical fiber knots (OFNs), Optum consists three independent working modules that can measure pressure, hardness, and texture, respectively. Their sensing mechanisms are all based force-induced microbending loss OFNs. A minimum resolution 0.12 N is achieved pressure from 0–10...