A5061059035- Spectroscopy and Laser Applications
- Atmospheric Ozone and Climate
- Gas Sensing Nanomaterials and Sensors
- Acoustic Wave Resonator Technologies
- Atmospheric and Environmental Gas Dynamics
- Ultrasonics and Acoustic Wave Propagation
- Advanced Fiber Optic Sensors
- Synthesis and properties of polymers
- Advanced Decision-Making Techniques
- Advanced Algorithms and Applications
- Advanced Thermoelectric Materials and Devices
- Analytical Chemistry and Sensors
- Advanced Sensor and Control Systems
- Flame retardant materials and properties
- Fire dynamics and safety research
Shanghai Maritime University
2024
Nanjing University of Science and Technology
2021-2022
Shandong Institute of Automation
2021
Liaocheng University
2019-2020
A four-off-beam acoustic micro-resonator (AmR) structure is proposed to improve the photoacoustic signal intensity in quartz-enhanced spectroscopy (QEPAS) for trace gas sensing. Two vertical-array-based double-off-beam AmR structures are arranged on each side of quartz tuning fork (QTF) horizontally construct a using rectangular prism. This QEPAS scheme based evaluated water-vapor detection air at normal atmospheric pressure and room temperature (27 °C). Comparing with bare QTF scheme, new...
The quartz crystal microbalance (QCM) is an ultra-sensitive measuring device and has been commonly used in many specific applications. mass sensitivity distribution curve of m-m type QCM (QCM with symmetrical electrode) a Gaussian distribution. However, achieving highly accurate repeatable measurements requires the uniform sensitivity. To improve uniformity while ensuring high absolute sensitivity, double-ring electrode geometry designed. This study improves size design electrode, reveals...
Multi-component and multi-point trace gas sensing in the wavelength modulation spectroscopy is demonstrated based on frequency-division multiplexing time-division technology. A reference photodetector connected series with a cell constant concentration to measure second-harmonics peak of components for stabilization real time. The central wavelengths distributed feedback lasers are locked target absorption centers by signal using digital proportional-integral-derivative controller. different...
A two-component gas sensor in quartz-enhanced photoacoustic spectroscopy based on time-division multiplexing (TDM) technology of a distributed-feedback (DFB) laser driver current was proposed and experimentally demonstrated. The quartz tuning-fork-based (PAS) cell configuration with two optical collimators acoustic microresonators designed to detect the second-harmonic (${2}f$2f) PAS signal. guaranteed that beams would inject conveniently, providing higher power input than 3 dB fiber...
Uniformization of mass sensitivity distribution is conducive to the application quartz crystal microbalance (QCM) in some fields. However, QCM sensor surface perpendicular displacement direction higher that ring and double-ring QCMs, which leads poor reproducibility sensor. Considering effect electrode structure on distribution, we found for ring- double-ring-type when elliptical single structures are combined, an approximately uniform can be obtained all directions. Therefore, this study...
Steam turbine blades may crack, break, or suffer other failures due to high temperatures, pressures, and high-speed rotation, which seriously threatens the safety reliability of equipment. The signal characteristics different fault types are slightly different, making it difficult accurately classify faults rotating directly through vibration signals. This method combines a one-dimensional convolutional neural network (1DCNN) channel attention mechanism (CAM). 1DCNN can effectively extract...