A5014657715- Chaos control and synchronization
- Vibration and Dynamic Analysis
- Nonlinear Dynamics and Pattern Formation
- Quantum chaos and dynamical systems
- Advanced Differential Equations and Dynamical Systems
- Vibration Control and Rheological Fluids
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Seismic Performance and Analysis
- Structural Analysis and Optimization
- Mechanical and Optical Resonators
- Composite Structure Analysis and Optimization
- Railway Engineering and Dynamics
- Acoustic Wave Phenomena Research
- Control and Dynamics of Mobile Robots
- Geophysics and Sensor Technology
- Dynamics and Control of Mechanical Systems
- Organic Light-Emitting Diodes Research
- Magnetic Bearings and Levitation Dynamics
- Nonlinear Photonic Systems
- Photochemistry and Electron Transfer Studies
- stochastic dynamics and bifurcation
- Mathematical and Theoretical Epidemiology and Ecology Models
- Innovative Energy Harvesting Technologies
- Fullerene Chemistry and Applications
Civil Aviation University of China
2016-2025
Jilin University of Chemical Technology
2025
Shandong Electric Power Engineering Consulting Institute Corp
2024
China Power Engineering Consulting Group (China)
2024
Beijing University of Technology
2009-2022
Tianjin University of Technology
2022
Tianjin Chengjian University
2022
Northeast Normal University
2014-2017
Faculty (United Kingdom)
2016-2017
In linear time-invariant dynamical and acoustical systems, reciprocity holds by the Onsager-Casimir principle of microscopic reversibility, this can be broken only odd external biases, nonlinearities, or time-dependent properties. A concept is proposed in work for breaking dynamic based on irreversible nonlinear energy transfers from large to small scales a system with hierarchical internal structure, asymmetry, intentional strong stiffness nonlinearity. The resulting nonreciprocal...
To solve the problem of detecting damages aeroengine blades in harsh environments and reduce aviation safety hazards caused by visual reasons, such as careless observation delayed reporting blade damages, detection model for via deep learning algorithms is proposed this article. First, gamma correction method used to process dataset captured borescope enhance characterization ability. Second, improved convolutional block attention module (CBAM) embedded into head end backbone network YOLOv7...
In the current work, a series of bithiopheneimide (BTI)-based D–A copolymers were investigated based on reported PDTSBTI (1) to screen excellent molecules toward organic photovoltaic (OPV) donor materials. It is found that PCE proposed derivative 4, where silicon atom replaced with vinyl and cyano groups DTS unit, shows 70 percent improvement by Scharber diagrams compared its prototype 1. Then, charge transfer dynamics 1/PC71BM 4/PC71BM investigated, including intermolecular (inter-CT)...
The interface characteristic is a crucial factor determining the power conversion efficiency of organic solar cells (OSCs). In this work, our aim to conduct comparative study on characteristics between very famous non-fullerene acceptor, ITIC, and fullerene PC71BM by combining molecular dynamics simulations with density functional theory. Based some typical models acceptor ITIC or donor PBDB-T selected from MD simulation, besides evaluation charge separation/recombination rates, relative...
A comparison of the OSC efficiency between <bold>PC61BM</bold> and non-fullerene small molecule acceptor-<bold>FENIDT</bold> was studied by microscopic analysis based on DFT/TDDFT calculation.
In this paper, a new vibro-impact bistable oscillator by installing an adjustable rigid wall to one side of the smooth–discontinuous (SD) oscillator, is constructed analytically and numerically reveal its unique global dynamic characteristics. unperturbed case, there exist complex unilateral homoclinic structures transversal intersecting, grazing nonintersecting with impact boundary due adjustability constraint. When weak vicious damping, periodic excitation energy dissipation are...
In this paper, we extend the well-known Melnikov method for smooth systems to a class of periodic perturbed piecewise planar system. We assume that unperturbed system is Hamiltonian which possesses homoclinic solution transversally crossing switching manifold. The Melnikov-type function explicitly derived by using measure distance stable and unstable manifolds. Finally, apply obtained results study chaotic dynamics concrete
Reciprocity is a property of linear, time-invariant systems whereby the energy transmission from source to receiver unchanged after exchanging and receiver. Nonreciprocity violates this can be introduced if time-reversal symmetry and/or parity lost. While many studies have induced nonreciprocity by active means, i.e., odd-symmetric external biases or time variation system properties, considerably less attention has been given acoustical structures that passively break reciprocity. This study...
In this paper, we extend the well-known Melnikov method for smooth systems to a class of periodic perturbed planar hybrid piecewise-smooth systems. class, switching manifold is straight line which divides plane into two zones, and dynamics in each zone governed by system. When trajectory reaches separation line, then reset map applied instantaneously before entering other zone. We assume that unperturbed system piecewise Hamiltonian possesses homoclinic solution transversally crossing...
DFT and TDDFT calculations were performed to search for high-performance non-fullerene organic acceptor materials in solar cells.