A5045026430- Advanced Sensor and Energy Harvesting Materials
- Gas Sensing Nanomaterials and Sensors
- Graphene research and applications
- Supercapacitor Materials and Fabrication
- Non-Invasive Vital Sign Monitoring
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Innovative Energy Harvesting Technologies
- Electrochemical sensors and biosensors
- MXene and MAX Phase Materials
- Tactile and Sensory Interactions
- Microwave Engineering and Waveguides
- Quantum and electron transport phenomena
- Wireless Power Transfer Systems
- Dielectric materials and actuators
- Muscle activation and electromyography studies
- Perovskite Materials and Applications
- Advanced Chemical Sensor Technologies
- 2D Materials and Applications
- Nanowire Synthesis and Applications
- Advanced Fiber Optic Sensors
- EEG and Brain-Computer Interfaces
- Adhesion, Friction, and Surface Interactions
- Analytical Chemistry and Chromatography
- Optimization and Search Problems
Shanghai Normal University
2022-2024
Tsinghua University
2018-2023
Tsinghua–Berkeley Shenzhen Institute
2017-2019
University of California, Berkeley
2017-2019
Berkeley Geochronology Center
2019
University Town of Shenzhen
2018
Abstract Real‐time and continuous monitoring of physiological signals is essential for mobile health, which becoming a popular tool efficient convenient medical services. Here, an active pulse sensing system that can detect the weak vibration patterns human radial artery constructed with sandwich‐structure piezoelectret has high equivalent piezoelectricity. The precision stability result in possible assessment applications, including capability to identify common heart problems (such as...
Versatile and low-cost manufacturing processes/materials are essential for the development of paper electronics. Here, a direct-write laser patterning process is developed to make conductive molybdenum carbide-graphene (MCG) composites directly on substrates. The hierarchically porous MCG structures converted from fibrous soaked with gelatin-mediated inks containing ions. resulting Mo3 C2 graphene mechanically stable electrochemically active various potential applications, such as...
Flexible and wearable devices with the capabilities of both detecting generating mechanical stimulations are critical for applications in human–machine interfaces, such as augmented reality (AR) virtual (VR). Herein, a flexible patch based on sandwiched piezoelectret structure is demonstrated to have high equivalent piezoelectric coefficient d33 at 4050 pC/N selectively perform either actuating or sensing function. As an actuator, vibrations peak output force more than 20 mN been produced,...
Abstract Ultrathin transition metal carbides with high capacity, surface area, and conductivity are a promising family of materials for applications from energy storage to catalysis. However, large-scale, cost-effective, precursor-free methods prepare ultrathin lacking. Here, we demonstrate direct pattern method manufacture (MoC x , WC CoC ) on versatile substrates using CO 2 laser. The laser-sculptured polycrystalline (macroporous, ~10–20 nm wall thickness, ~10 crystallinity) show...
Abstract While electrochemical supercapacitors often show high power density and long operation lifetimes, they are plagued by limited energy density. Pseudocapacitive materials, in contrast, operate fast surface redox reactions shown to enhance storage of supercapacitors. Furthermore, several reported systems exhibit capacitance but restricted voltage windows, usually no more than 1 V aqueous electrolytes. Here, it is demonstrated that vertically aligned carbon nanotubes (VACNTs) with...
Abstract Understanding the influences of defect states on gas adsorption graphene is at heart developing based sensors for practical applications. However, it has been challenging to experimentally discriminate adsorptions induced by defects graphene, especially charged impurities commonly found transferred samples. Here, using a transistor biased with quasistatic gate voltage, this study measures charge density and scattering strength adsorbents directly resolves defect‐induced versus...
Pulse wave monitoring is critical for the evaluation of human health. In this paper, a wearable multi-sensor pulse system proposed and demonstrated. The consists measuring unit an analog circuit processing unit. main part flexible printed board (PCB) with thickness 0.15 mm, which includes three micro-electromechanical (MEMS) pressure sensors softly packaged by polydimethylsiloxane (PDMS), blood oxygen detector MEMS three-axis accelerometer. sensors，the accelerometer are fixed on expected...
This work marks the first use of phase spectra detection method to realize selective sensing chemical vapors on a vapor deposition (CVD) monolayer graphene field effect transistor (FET). Compared with state-of-art technology, three distinctive advances have achieved: (1) demonstration gas using single CVD FET without surface functionalization; (2) quantitative results for four (water, methanol, ethanol and isopropanol) different concentrations; (3) illustrations selectivity by extraction...
Wearable sensors for sweat trace metal monitoring have the challenges of effective collection and real-time recording detection signals. The existing technologies are implemented by generating enough through exercise, which makes detecting metals in cumbersome. Generally, it takes around 20 min to obtain sweat, resulting dallied prolonged signals that cannot reflect endogenous fluctuations body. To solve these problems, we prepared a multifunctional hydrogel as an electrolyte combined with...
This work marks the first use of an AC sensing technique on a graphene transistor to realize label-free gas 100 ppb-level formaldehyde in air at room temperature. Compared with state-of-art technology, three distinctive advances have been achieved: (1) extraordinary sensitivity trace amount using phase detection method single made monolayer from chemical vapor deposition (CVD) process without adding functional materials; (2) high signal stability devices or artificial defects; (3) fast...
Monitoring the force of fingertip manipulation without disturbing natural sense touch is crucial for digitizing skills experienced craftsmen. However, conventional sensors need to be put between skin and objects, which affects skin. Here, we proposed a sensing method based on changes blood volume designed wearable photoelectric system (PFFS) digitalization traditional Chinese medicine (TCM) pulse diagnosis. The PFFS does not interfere with fingertips' tactile while detecting force. This...
Thermal stress failure is the bottleneck that restricting development of ultra-high temperature sensors, and reliable packaging crucial in their process. In this paper, a two-step structure was proposed for high resistant challenges Fabry–Perot optical fibre vibration sensor. First, AlN base selected according to thermal simulation. A bond between 6H-SiC vibration-sensitive element designed, which could effectively avoid thermomechanical adaptation during drastic change. addition, ZrO <sub...