A5037358915- Advanced Sensor and Energy Harvesting Materials
- Non-Invasive Vital Sign Monitoring
- Covalent Organic Framework Applications
- Advanced Photocatalysis Techniques
- Advanced Fiber Optic Sensors
- Graphene research and applications
- Ocular Surface and Contact Lens
- Glaucoma and retinal disorders
- Gaze Tracking and Assistive Technology
- Advanced MEMS and NEMS Technologies
- Analytical Chemistry and Sensors
- Corneal Surgery and Treatments
- Optical Imaging and Spectroscopy Techniques
- Neuroscience and Neural Engineering
- Semiconductor Lasers and Optical Devices
- Advanced Computing and Algorithms
- Mechanical and Optical Resonators
- Photonic and Optical Devices
- Polydiacetylene-based materials and applications
- Gas Sensing Nanomaterials and Sensors
- Cardiovascular Health and Disease Prevention
- Tactile and Sensory Interactions
- Atomic and Subatomic Physics Research
- Sensor Technology and Measurement Systems
- Advanced biosensing and bioanalysis techniques
Nanjing University
2019-2024
Collaborative Innovation Center of Advanced Microstructures
2020-2024
City University of Hong Kong, Shenzhen Research Institute
2020
2D materials exhibit superior properties in electronic and optoelectronic fields. The wide demand for high-performance devices promotes the exploration of diversified materials. Recently, covalent organic frameworks (COFs) have emerged as next-generation layered with predesigned π-electronic skeletons highly ordered topological structures, which are promising tailoring their properties. However, COFs usually produced solid powders due to anisotropic growth, making them unreliable integrate...
Abstract Smart wearable devices have made remarkable success in medical‐grade human vital signal monitoring and promoted the realization of precision medicine telemedicine. The flexibility stretchability are significant for devices, which determine adhesion to skin influence accuracy. Here, a stretchable ultrathin optical sensor based on self‐assembled wavy microfiber is proposed. Thanks “bottom–up” strategy, wave structure can be adjusted artificially, paving way design devices. Due...
Real-time intraocular pressure (IOP) monitoring plays a crucial role in glaucoma diagnosis and treatment. The wireless smart contact lens based on flexible inductor-capacitor-resistor (LCR) sensor is chip-free battery-free, demonstrating excellent application potential for physiological signal monitoring. To promote the use of LCR lenses clinical IOP monitoring, reliable, comfortable materials should be used sensitivity needs to realized. Here, we propose method producing hydrogel-based that...
Abstract Eye tracking techniques enable high-efficient, natural, and effortless human-machine interaction by detecting users’ eye movements decoding their attention intentions. Here, a miniature, imperceptible, biocompatible smart contact lens is proposed for in situ wireless eye-machine interaction. Employing the frequency encoding strategy, chip-free battery-free successes movement closure. Using time-sequential algorithm, has great angular accuracy of <0.5°, which even less than vision...
Abstract Smart contact lenses (SCLs), integrating various functional components, serve as a platform for wirelessly intraocular pressure (IOP) monitoring. Accurate and dynamic measurements offer crucial clinical references patients with ocular hypertension. Nevertheless, the complex environment poses great challenges, particularly inductor–capacitor–resistor (LCR) type IOP sensors, which suffer signal instability due to variations of dielectric properties. Here, an innovative monitoring...
Systemic blood circulation is one of life activity’s most important physiological functions. Continuous noninvasive hemodynamic monitoring essential for the management cardiovascular status. However, it difficult to achieve systemic with daily use current devices due lack multichannel and time-synchronized operation capability over whole body. Here, we utilize a soft microfiber Bragg grating group monitor spatiotemporal hemodynamics by taking advantage high sensitivity, electromagnetic...
A flexible wireless dielectric sensor is presented here for noninvasively monitoring the permittivity and conductivity of fluids, based on resistor–inductor–capacitor (RLC) resonant circuit capacitively coupled contactless detection (C4D) technique. The RLC consists one single-turn inductor interdigital capacitor. frequency device sensitive to surrounding environment, thanks electric field leaked out between capacitor electrodes. Through high-frequency structure simulator (HFSS) simulation,...
In this work, we design and fabricate a compact photoelectrochemical (PEC) sensor by integrating graphene-MoS2 heterostructure on an optical fiber tip. The graphene serves as transparent carrier transport layer, the MoS2 presents photoelectrical transducer that generates photocarriers interacts with ascorbic acid (AA) in solution. This device is used to demonstrate self-powered detection of AA concentration range between 1 mM 50 mM, time response ∼ 6 ms. downsizes traditional PEC systems...
A microfiber Bragg grating (MFBG) bonded using tapered cantilever was designed to improve ultrasonic sensitivity, and investigated experimental, theoretical, numerical methods. The signal amplified by the structure while influences of static strain evanescent field were eliminated cantilever. Compared with cantilevered fiber grating, sensitivity sensor presents an upward trend descent diameter as there are 331% 108% increment MFBGs 20 40 μm diameters, improvement is apparent when frequency high.
In article number 1907242, Kai Xi, Peng Zhan, Fei Xu, Yanqing Lu, and co-workers report an ultrasensitive photodetector using 2D covalent organic framework (COF)–graphene heterostructures. By selecting photoactive monomers, elaborately designed photosensitive 2D-COFs with highly ordered donor–acceptor topologies are in situ synthesized on graphene, ultimately forming COF–graphene This study provides new strategies for building advanced functional devices programmable material structures...
Fei Xu, Hengtian Zhu, and co-workers (article number 2002206) demonstrate a self-assembled wavy optical microfiber for stretchable wearable sensors. The approach inspired by the bottom-up strategy forming geometries in microfibers is controllable suitable mass production. With great sensitivity repetition, human pulse wave blood pressure were successfully monitored, showing potential real-time health care applications.
Flexible opto-electronics facilitate a seamless and fully connected bridge between smart devices the human body, enabling long-term continuous health monitoring human-machine interaction. In this study, an intelligent photonic skin based on microfiber Bragg grating <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$(\boldsymbol{\mu}\mathbf{FBG})$</tex> was proposed for tiny pulse wave detection with high sensitivity. The comprises optical...
Two dimensional (2D) materials exhibit superior properties in electronic and optoelectronic fields. The wide demand for high performance devices promotes the exploration of diversified 2D materials. Recently, covalent organic frameworks (COFs) have emerged as next-generation layered with predesigned pi skeletons highly ordered topological structures, which are promising tailoring their properties. However, COFs usually produced solid powders due to anisotropic growth, making them unreliable...
We demonstrate a stretchable optical sensor based on the wavy microfiber. With great sensitivity and stretchability, proposed is employed for human respiration monitoring finger bend, preforming an application potential health robotics.