论文标题
活性流体中的局部状态
Localized states in active fluids
论文作者
论文摘要
生物活性物质通常与影响其组装 - 分配动力学和应力产生的化学反应网络紧密耦合。我们表明，如果有活性物质的组装受到由活性应力中的梯度引起的流动，则可以自发地出现局部状态。机械化学的局部模式通过亚临界分叉形成，对于在没有对流耦合的情况下不存在模式的参数值。我们的工作确定了局部细胞模式的基础通用机制。
Biological active matter is typically tightly coupled to chemical reaction networks affecting its assembly-disassembly dynamics and stress generation. We show that localized states can emerge spontaneously if assembly of active matter is regulated by chemical species that are advected with flows resulting from gradients in the active stress. The mechanochemical localized patterns form via a subcritical bifurcation and for parameter values for which patterns do not exist in absence of the advective coupling. Our work identifies a generic mechanism underlying localized cellular patterns.
