A5056040060- Spectroscopy and Laser Applications
- Energy Harvesting in Wireless Networks
- Adaptive Control of Nonlinear Systems
- Advanced Numerical Analysis Techniques
- Innovative Energy Harvesting Technologies
- Stability and Control of Uncertain Systems
- Mechanical and Optical Resonators
- Wireless Power Transfer Systems
- Fire Detection and Safety Systems
- Advanced MEMS and NEMS Technologies
- Gas Sensing Nanomaterials and Sensors
- Iterative Learning Control Systems
- Advanced Measurement and Detection Methods
- Air Quality Monitoring and Forecasting
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Analog and Mixed-Signal Circuit Design
- Neural Networks Stability and Synchronization
- Control and Stability of Dynamical Systems
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Atmospheric and Environmental Gas Dynamics
- Acoustic Wave Resonator Technologies
- Advanced Algorithms and Applications
- Advanced Measurement and Metrology Techniques
Jilin University
2010-2025
State Key Laboratory on Integrated Optoelectronics
2021-2025
Shanghai University of Engineering Science
2011-2024
Xi'an University of Architecture and Technology
2023
Shenzhen University
2023
Jilin Medical University
2022
Microsoft (United States)
2020
Northwestern Polytechnical University
2017-2020
Research & Development Institute
2020
Hunan Radio and Television University
2016
A dual-range mid-infrared carbon dioxide (CO2) sensor is developed with temperature and humidity compensation functionalities. Using the same optical path, employs dual-channel signal processing circuits to achieve measurements across two detection ranges of 200–3000 parts-per-million (ppm) (low concentration range) 8–25% (high range), respectively. The sensor, a compact size 8.5 × 5.5 3.5 cm3, shows good linear response, fitting goodness R2 = 0.99942 for low range 0.9993 high range. Under...
Based on near-infrared off-axis integrated cavity output spectroscopy (OA-ICOS), a portable carbon dioxide (CO2) sensor system capable of atmosphere monitoring is proposed by targeting the CO2 absorption lines at 2.004 μm. To address comprehensive issues complex light-adjustment structures, poor sealing, and slow gas replacement, an effective optimization scheme introduced, combining fluid dynamics to produce stable optical resonant with path length 891 m physical 30 cm. The boasts wide...
This article is concerned with the observer-based output feedback stabilization problem for a class of nonlinear systems that satisfies one-sided Lipschitz and quadratically inner-bounded conditions. The system model under consideration encompasses classical as special case. For such system, we design controller via constructing full-order Luenberger-type state observer. Sufficient conditions guarantee existence are established in form linear matrix inequalities, which readily solved by...
Infrared absorption spectroscopy (IAS) is currently a powerful tool for gas sensing. Gas sensors based on IAS show advantages of high sensitivity, good selectivity and in-situ measurement. Typical infrared include discrete optics, hollow-core fiber on-chip sensors, suitable different application environments. Discrete have relatively large volume heavy weight, but due to light-gas interaction length (tens meters or even kilometers), their sensitivity obviously higher than sensors. Mature...
This paper lucubrates the bifurcations of a fractional-order bidirectional associative memory neural network (FOBAMNN) with leakage and communication delays. Firstly, delay is taken as bifurcation parameter to detect proposed (NN). Leakage delay-induced results are commendably established. Then regarded investigate developed FOBAMNN, stability interval point derived. It reveals that devised FOBAMNN possesses outstanding performance if selecting lesser value them, while emerges eventually...
Sulfur dioxide (SO2) and nitrogen (NO2) are chemical indicators of crop straw combustion as well significant atmospheric pollutants. It is challenging to promptly detect natural "wildfires" during agricultural production, which often lead uncontrollable substantial economic losses. Moreover, both artificial "straw burning" practices pose severe threats the ecological environment human health. Consequently, developing sensors capable rapid high-precision quantitative analysis SO2/NO2...
In this brief, a low-cost and high-yield bulk under thin-film (BUT) MEMS technique for the volume production of flow sensors is proposed developed. The IC-foundry-compatible process conducted only from front side (111) silicon wafers, without double-sided alignment exposure, wafer bonding, cavity on insulator, polished wafers needed. With single-wafer-based BUT structure, thermopile consisting 21 pairs single-crystalline Si/Al thermocouples that show significantly higher Seebeck coefficient...
This study aims to investigate the connection between leakage sign (LS) and hematoma expansion (HE) in cases of spontaneous intracerebral hemorrhage. The investigation employs dual-energy computed tomography angiography (DECTA). A prospective cohort was conducted, which clinical DECTA imaging data were collected from hemorrhage patients within 6 hours onset January 2021 June 2023. Exposure factors included DE-LS traditional biomarkers. occurrence HE on rescanned 24 observed outcome. Exposed...
With our developed MIS (Microholes Inter-etch & Sealing) micromachining process that is implemented only from the front-side of single-side polished (111) silicon wafers, a novel piezoresistive pressure sensing unit and another identically structured pressure-insensitive dummy are on-chip integrated compactly to eliminate unbalance factors induced temperature-drift by mutual compensation between two units. In addition, units both suspended substrate suppress packaging-stress. The...
This paper considers the state estimation problem for a class of discrete-time systems with generalized Lipschitz nonlinear dynamics. Under assumption that system nonlinearities satisfy quadratically inner-boundedness condition, we design both full-order observer and reduced-order system. Sufficient conditions ensuring existence observers as well such are established formulated in terms linear matrix inequality (LMI). Compared some existing results, remove one-sided restrict extend classical...
An on‐chip 23 kHz dual‐phase relaxation oscillator is presented. Charge‐transfer and comparator offset cancellation techniques have been proposed to achieve low power high temperature stability. The circuit has designed with 0.18 μm CMOS process. achieved an ultra‐low of 130 nW, a supply voltage sensitivity 0.8%/V over 1.2–1.8 V, coefficient 30 ppm/°C .
To realize early fire identification in cotton harvesting operations, a mid-infrared carbon monoxide (CO) sensor system was developed. match the broadband light source with 15° divergence angle, multipass gas cell (MPGC) an effective path length of 180 cm designed to improve sensitivity, leading limit detection (LoD) 0.83 parts-per-million by volume (ppmv). A damping module springs at bottom and front/back sides fabricated, which can effectively reduce vibration intensity >80%. The operate...
Device performance has been boosted by integrating dual-stress-liners (DSL) in a 45nm low power platform as cost effective approach. A stress-proximity-technique (SPT) explored to improve device without adding process complexity. Record drain currents of 840/490 μA/μm have achieved for NMOS and PMOS, respectively, at 1.2V off-leakage current 1nA/μm. Junction profiles optimized reduce the gate-induced-drain-leakage (GIDL). An asymmetric IO integrated into this technology first time, offering...