Transitions of Collective Motions Driven by Phase Resetting
Transitions of Collective Motions Driven by Phase Resetting
复制标题
相位重置驱动的集体运动的转变
DOI：
10.1002/cphc.202300054
复制
发表时间：
2023
期刊：
影响因子：
2.9
通讯作者：
Gao, Qingyu
中科院分区：
文献类型：
--
作者：
Teng, Rui;Li, Yang;Ren, Lin;Ma, Juan;Epstein, Irving R.;Gao, Qingyu
突然（即环境变化，如自然灾害或捕食者的干预，可以改变具有活跃单位的群体的内部动态，导致群体的迅速毁灭和/或重组，出现新的集体结构，使系统具有适应性。迄今为止，很少有研究考虑了突发性环境变化对应急行为的影响。在这里，我们使用活性物质的模型，Belousov-Zhabotinsky（BZ）自振荡凝胶，来研究在相互作用的光敏活性单元阵列中由光照强度变化引起的集体运动模式之间的形成和转变机制。通过照明强度的阶跃变化可以产生新形式的集体运动。这些变化是由参数突变引起的相位重置和波信号再生引起的，而渐变则导致集体运动的不同演化。我们的研究结果不仅提出了一种新的涌现机制，而且还意味着新的集体行为可以通过不连续的参数变化来实现。
Abrupt (i. e. step) environmental changes, such as natural disasters or the intervention of predators, can alter the internal dynamics of groups with active units, leading to the rapid destruction and/or restructuring of the group, with the emergence of new collective structures that endow the system with adaptability. Few studies, to date, have considered the influence of abrupt environmental changes on emergent behavior. Here, we use a model of active matter, the Belousov‐Zhabotinsky (BZ) self‐oscillating gel, to study the mechanism of formation and transition between modes of collective locomotion caused by changes of illumination intensity in arrays of interacting photosensitive active units. New forms of collective motion can be generated by step changes of illumination intensity. These transformations arise from the phase resetting and wave‐signal regeneration induced by the abrupt parameter variation, while gradual change results in different evolution of collective motion. Our results not only suggest a novel mechanism for emergence, but also imply that new collective behaviors could be accessible via discontinuous parameter changes.