Bing-Wei Li
Zhejiang University
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Publication
Featured researches published by Bing-Wei Li.
Physical Review E | 2016
Bing-Wei Li; Hans Dierckx
The recently discovered chimera state involves the coexistence of synchronized and desynchronized states for a group of identical oscillators. In this work, we show the existence of (inwardly) rotating spiral wave chimeras in the three-component reaction-diffusion systems where each element is locally coupled by diffusion. A transition from spiral waves with the smooth core to spiral wave chimeras is found as we change the local dynamics of the system or as we gradually increase the diffusion coefficient of the activator. Our findings on the spiral wave chimera in the reaction-diffusion systems suggest that spiral chimera states may be found in chemical and biological systems that can be modeled by a large population of oscillators indirectly coupled via a diffusive environment.
Scientific Reports | 2015
Xia Feng; Xiang Gao; De-Bei Pan; Bing-Wei Li; Hong Zhang
Spiral waves anchored to obstacles in cardiac tissues may cause lethal arrhythmia. To unpin these anchored spirals, comparing to high-voltage side-effect traditional therapies, wave emission from heterogeneities (WEH) induced by the uniform electric field (UEF) has provided a low-voltage alternative. Here we provide a new approach using WEH induced by the circularly polarized electric field (CPEF), which has higher success rate and larger application scope than UEF, even with a lower voltage. And we also study the distribution of the membrane potential near an obstacle induced by CPEF to analyze its mechanism of unpinning. We hope this promising approach may provide a better alternative to terminate arrhythmia.
Journal of Chemical Physics | 2014
Bing-Wei Li; Mei-Chun Cai; Hong Zhang; Alexander V. Panfilov; Hans Dierckx
Chirality is one of the most fundamental properties of many physical, chemical, and biological systems. However, the mechanisms underlying the onset and control of chiral symmetry are largely understudied. We investigate possibility of chirality control in a chemical excitable system (the Belousov-Zhabotinsky reaction) by application of a chiral (rotating) electric field using the Oregonator model. We find that unlike previous findings, we can achieve the chirality control not only in the field rotation direction, but also opposite to it, depending on the field rotation frequency. To unravel the mechanism, we further develop a comprehensive theory of frequency synchronization based on the response function approach. We find that this problem can be described by the Adler equation and show phase-locking phenomena, known as the Arnold tongue. Our theoretical predictions are in good quantitative agreement with the numerical simulations and provide a solid basis for chirality control in excitable media.
Journal of Chemical Physics | 2007
Wen-Qiang Chen; Hong Zhang; He-Ping Ying; Bing-Wei Li; Jiang-Xing Chen
The effect of a circularly polarized electric field on the Turing stripe patterns is studied. The numerical results show that stripe patterns may change to hexagonal wave patterns by choosing the intensity and the frequency of the circularly polarized electric field suitably. Our findings indicate that a pattern tends to organize itself to the pattern with the same symmetry of the applied field with the fact that compared to the stripe patterns, hexagonal wave patterns possess hexagonal symmetry which is closer to the rotation symmetry of the circularly polarized electric field.
Physical Review E | 2016
Teng-Chao Li; Xiang Gao; Fei-Fei Zheng; Mei-Chun Cai; Bing-Wei Li; Hong Zhang; Hans Dierckx
Scroll waves in a three-dimensional media may develop into turbulence due to negative tension of the filament. Such negative tension-induced instability of scroll waves has been observed in the Belousov-Zhabotinsky reaction systems. Here we propose a method to restabilize scroll wave turbulence caused by negative tension in three-dimensional chemical excitable media using a circularly polarized (rotating) external field. The stabilization mechanism is analyzed in terms of phase-locking caused by the external field, which makes the effective filament tension positive. The phase-locked scroll waves that have positive tension and higher frequency defy the turbulence and finally restore order. A linear theory for the change of filament tension caused by a generic rotating external field is presented and its predictions closely agree with numerical simulations.
New Journal of Physics | 2015
Hans Dierckx; Sander Arens; Bing-Wei Li; Louis D. Weise; Alexander V. Panfilov
Reaction-diffusion mechanics (RDM) systems describe a wide range of practically important phenomena where deformation substantially affects wave and vortex dynamics. Here, we develop the first theory to describe the dynamics of rotating spiral waves in RDM systems, combining response function theory with a mechanical Greens function. This theory explains the mechanically-induced drift of spiral waves as a resonance phenomenon, and it can predict the drift trajectories and the final attractors from measurable characteristics of the system. Theoretical predictions are confirmed by numerical simulations. The results can be applied to cardiac tissue, where the drift of spiral waves is an important factor in determining different types of cardiac arrhythmias.
Physical Review E | 2013
Bing-Wei Li; Ling-Yun Deng; Hong Zhang
Physical Review E | 2009
Bing-Wei Li; Hong Zhang; He-Ping Ying; Gang Hu
Physical Review E | 2012
Xiang Gao; Xia Feng; Mei-Chun Cai; Bing-Wei Li; He-Ping Ying; Hong Zhang
Physical Review E | 2008
Bing-Wei Li; Hong Zhang; He-Ping Ying; Wen-Qiang Chen; Gang Hu