A5044520065- Advanced Sensor and Energy Harvesting Materials
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Tactile and Sensory Interactions
- Electrochemical sensors and biosensors
- Carbon and Quantum Dots Applications
- Copper-based nanomaterials and applications
- Ga2O3 and related materials
- Machine Learning and Data Classification
- Inertial Sensor and Navigation
- Ferroelectric and Piezoelectric Materials
- Respiratory and Cough-Related Research
- GaN-based semiconductor devices and materials
- Advanced Photonic Communication Systems
- Muscle activation and electromyography studies
- GNSS positioning and interference
- Voice and Speech Disorders
- Cryptography and Data Security
- Knee injuries and reconstruction techniques
- Energy Efficient Wireless Sensor Networks
- Indoor and Outdoor Localization Technologies
- Advanced Frequency and Time Standards
- Privacy-Preserving Technologies in Data
- Advanced MEMS and NEMS Technologies
Tianjin University
2021-2024
Nanjing University of Aeronautics and Astronautics
2024
Zhejiang University
2012-2023
State Key Laboratory of Silicon Materials
2012
Peking University
2009
State Key Laboratory of Artificial Microstructure and Mesoscopic Physics
2009
Today, the vast majority of microelectromechanical system (MEMS) sensors are mechanically rigid and therefore suffer from disadvantages when used in intimately wearable or bio-integrated applications. By applying new engineering strategies, bendable stretchable MEMS devices have been successfully demonstrated. This article reviews recent progress this area, focusing on high-performance flexible based inorganic thin films. We start with common design fabrication strategies for flexibility...
This paper reports a solution to acoustic short circuit issue of piezoelectric MEMS speakers by sealing slits between actuators with stretchable film. Validated simulation and experiment results, sound pressure level (SPL) at low frequency range speaker could be improved significantly. With 15 μm thick film polydimethylsiloxane (PDMS), the SPL 20 Hz increases about dB. Compared alternative solutions plastic sealing, high sensitivity resonant preserved since Young's modulus is enough for...
The structural, optical, and magnetic properties of Cu-implanted GaN films have been investigated. No secondary phase was found within the resolution limit instrument but lattice defects such as vacancies were present in film. Room temperature ferromagnetism observed with saturation magnetization 0.3μB/Cu atom. field-cooled curves can be well fitted by a Curie-Weiss model standard three-dimensional spin-wave low high ranges, respectively. Our findings indicate that vacancylike should...
The development of Internet Things (IoT) requires demanding accurate and low-power indoor localization. In this article, a high-precision 3-D ultrasonic localization system with ultralow power is proposed. A new piezoelectric micromachined transducer (PMUT) chip slotted membrane designed fabricated as receiver, breaking the dilemma low resonant frequency wide field view required for works based on time difference arrival (TDoA), an improved quantum genetic algorithm (QGA) used to estimate...
Abstract Stretchable electronic skin (e‐skin) paves the way for applications that exceed scope of intrinsic rigid devices and hard‐to‐stretch sensors. The broad application range flexible e‐skins benefits from device architectures can simultaneously provide mechanical flexibility superior sensitivity. Classic fractal design provides a simple architecture to achieve desired through structural improved wear comfort, but at expense sensor In this study, proposed method addresses trade‐off...
As <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$a$ </tex-math></inline-formula> common and natural activity of human beings, eye movement has been regarded as an indicator physiological psychological health; tracking applied to wide range domains, such disease diagnostics, drug therapy testing human-computer interaction. Conventionally, is captured by three approaches, i.e., recording video using...
The paper reports an island nucleation and secondary growth of aligned ZnO : Cu nanorod arrays via thermal vapor phase transport. Results analysis indicates that the segment is epitaxially grown on nanorods with radius strongly dependent temperature concentration zinc vapor. modified characteristic (R(c)) model used to explain process. Temperature-dependent photoluminescence spectra indicate band gap emission greatly restrained. A controversial 3.31 eV (A line) two different donor-acceptor...
Cardiac auscultation is an orthodox method to prevent and diagnose cardiovascular diseases. Traditional stethoscopes cannot offer a highly reliable diagnosis, electronic suffer from low signal-to-noise ratio (SNR) high cost. This paper reports stethoscope based on piezoelectric bimorph MEMS transducers for cardiac sound monitoring. The prototype, measuring 37 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...
Abstract Assessment of the cough severity is essential when dealing with respiratory diseases such as chronic obstructive pulmonary disease and COVID‐19. Although a few wearable devices have been reported for detection, they mostly rely on microphones, accelerometers, or throat‐fixed flexible sensors, which suffer from key issues including privacy disclosure speech/motion artifacts. This study presents chest‐laminated electronic skin (e‐skin) reliable detection. Mixed dumbbell‐like networks...
The rapid expansion and integration of ICT (information communication convergence technologies) technology, large-scale deployment audio, video data applications, has prompted the State to promote concept all-optical networks. However, due various technical bottlenecks, this goal not been easily achievable, particularly in light network access, transmission, switching that have proven be large problems. This paper deals with end transfer, exchange problems, achieve an access layer, together...
Abstract Continuous and quantitative monitoring of knee joint function has clinical value in rehabilitation assessment the timing return to play for anterior cruciate ligament injury patients. However, existing approaches, including examination, arthrometry inertial solutions, can only be used qualitative, off‐line low‐quality evaluations, respectively. Burgeoning Kirigami stretchable sensors could a disruptive candidate solution, but they usually suffer from structural buckling issues when...
The rapid development of multi-satellite formations requires inter-satellite radio frequency (RF) measurement to be both precise and scalable. navigation estimation using a unified time reference demands the simultaneous RF range difference. However, high-precision ranging difference measurements are investigated separately in existing studies. Different from conventional two-way (TWR) method, which is limited by its reliance on high-performance atomic clock ephemeris, asymmetric...