A5100614784- Additive Manufacturing Materials and Processes
- Photonic and Optical Devices
- Quantum chaos and dynamical systems
- Nonlinear Waves and Solitons
- Laser and Thermal Forming Techniques
- Welding Techniques and Residual Stresses
- Advanced Fiber Optic Sensors
- Hydraulic and Pneumatic Systems
- Manufacturing Process and Optimization
- Structural Behavior of Reinforced Concrete
- Advanced Sensor and Control Systems
- Soft Robotics and Applications
- Advanced Welding Techniques Analysis
- Control and Dynamics of Mobile Robots
- Geomechanics and Mining Engineering
- Magneto-Optical Properties and Applications
- Non-Destructive Testing Techniques
- Structural Load-Bearing Analysis
- Mechanical stress and fatigue analysis
- Advanced Differential Geometry Research
- Civil and Geotechnical Engineering Research
- Metal and Thin Film Mechanics
- Railway Engineering and Dynamics
- Structural Engineering and Vibration Analysis
- Advanced Differential Equations and Dynamical Systems
Shangqiu Normal University
2003-2024
Shanghai Xiandai Architectural Design
2024
Nanjing Institute of Technology
2023
Chinese Academy of Sciences
2012-2023
Zhengzhou University
2015-2023
Guangzhou University
2017-2023
Beijing University of Technology
2023
Key Laboratory of Guangdong Province
2022-2023
China Power Engineering Consulting Group (China)
2023
Shenzhen University
2023
A large number of defect states that exist at the interface between a perovskite film and an electron transport layer (ETL) are detrimental to efficiency stability solar cells (PSCs). It is still challenge simultaneously passivate defects on both sides by stable low-cost ion compound. Herein, we demonstrate simple effective versatile strategy introducing hydrochloric acid into SnO2 precursor solution in layers reduce energy barrier, ultimately achieving high-performance hysteresis-free PSCs....
Buildings may need large damping force under severe or near-fault earthquakes, while existing friction dampers still a high preload to provide enough reaction forces. In order forces at small preload, this study proposes new type of response-amplified damper (RAFD) based on the amplification mechanism ball screw pair that combines advantages and inerter device. The restoring formula RAFD were derived theoretically, then pseudo-static tests with various parameters conducted. Finally,...
Lead rubber isolation bearings are well-recognized as a common and effective means to mitigate the seismic responses of bridges. However, used in offshore bridges extremely vulnerable action alternation aging seawater erosion caused by weather conditions, wind, waves, other factors. Meanwhile, deterioration law application lead subject effect cycles not clear. Thus, testing on both (LRB) materials were carried out. The parameters for Mooney–Rivlin model material LRBs determined time-varying...
In this paper, we examined the parameters of Mooney–Rivlin model based on effects alternative aging and sea corrosion tests for natural rubber bearings materials in seawater. The material used were determined using least-squares method. Meanwhile, time-varying law formula fitted, fitting calculated values compared. Both coincide with each other well. Then, predicted results combined nonlinear auto-regressive (NAR). compared both values. average deviations between C10 C01 2.6% 5.1%,...
Based on the invariance of differential equations under infinitesimal transformations, Lie symmetry, laws conservations, perturbation to symmetries and adiabatic invariants Poincaré are presented. The concepts symmetry higher order proposed. conditions for existence exact proved their forms also given. In addition, an example is presented illustrate these results.
Photodetectors play a key role in the military, aerospace, communications, bio-imaging, etc. In this study, we fabricate photodetector devices based on (CH3NH3)2FeCuI4Cl2 (MA2FeCuI4Cl2) and (CH3NH3)2InCuI6 (MA2InCuI6) for first time. We find that device MA2InCuI6 is highly selective ultraviolet light (880 nA mW-1) shows high anti-interference visible-light (20-50 mW-1). The electrochemical impedance results indicate value (480 ± 10 Ω) of resistance much smaller than (1 0.001 MΩ) MA2FeCuI4Cl2...
Based on the theory of symmetries and conserved quantities singular Lagrange system, perturbations to adiabatic invariants systems are discussed. Firstly, concept higher-order system is proposed. Then, conditions for existence exact proved their forms given. Finally, an example presented illustrate these results.
This paper discusses in detail the conformal invariance by infinitesimal transformations of a dynamical system relative motion. The necessary and sufficient conditions Lie symmetry are given simultaneously action transformations. Then it obtains conserved quantities Finally an example is to illustrate application results.
The plate-to-sleeve welded joint is employed in the aluminum alloy spatial structure. welding deformation and residual stress determine dimensional accuracy even increase failure risk. Based on ABAQUS software coordinate transformation method, a finite element model with arc weaving was developed to investigate temperature field, deformation, of an AA6061-T6 8-pass. metal inert gas experiment performed corresponding joint, stresses were measured verify numerical results. results show that...
Robot-assisted manipulation is promising for solving problems such as understaffing and the risk of infection in gastro-intestinal endoscopy. However, commonly used friction rollers few existing systems have a potential deforming flexible endoscopes non-uniform clamping.This paper presents robotic system standard endoscope focuses on novel gastroscope intervention mechanism (GIM), which provides circumferentially uniform clamping with an airbag. The GIM works relay-on way similar to manual...
Atmospheric water vapor is an essential source of information that predicts global climate change, rainfall, and disaster-natured weather. It also a vital error for Earth observation systems, such as the navigation satellite system (GNSS). The Zenith Tropospheric Delay (ZTD) plays crucial role in applications, atmospheric inversion GNSS precision positioning. ZTD has specific temporal spatial variation characteristics. Real-time modeling widely used modern society. conventional back...
We study the perturbation to symmetries and adiabatic invariants of a generalized Birkhoff system. Based on invariance differential equations under infinitesimal transformations, Lie symmetries, laws conservations, system are presented. First, concepts higher order proposed. Then, conditions for existence exact proved, their forms given. Finally, an example is presented illustrate method results.
In this paper, we present experimental results obtained for a device incorporating nano-PDLC inside Fabry-Perot cavity. Our aim is to produce fast-response and polarization-independent light shutter with potential applications in e.g. telecommunication systems since known its fast response time. our chosen example of 70 wt% polymer 30 liquid crystal (E7), contrast ratio = ∼7.5 under an applied voltage ∼50 V. Response time ∼2 3ms transmission ∼20%. All these performances, such as operation...