论文标题
随机牵引在上皮组织中产生过渡
Random traction yielding transition in epithelial tissues
论文作者
论文摘要
我们研究了上皮组织顶点模型中随机定向的细胞牵引力如何导致流体化。我们发现流体化发生在牵引力幅度$ f_c $的临界值中。我们表明，这种过渡表现出关键行为，类似于剪切的无定形固体的屈服过渡。但是，我们发现它属于不同的普遍性类别，即使它满足了在剪切无形固体的屈服过渡中建立的关键指数之间的相同比例关系。我们的工作通过积极的产生可能与生物组织相关，提供了一种流体化机制。
We investigate how randomly oriented cell traction forces lead to fluidisation in a vertex model of epithelial tissues. We find that the fluidisation occurs at a critical value of the traction force magnitude $F_c$. We show that this transition exhibits critical behaviour, similar to the yielding transition of sheared amorphous solids. However, we find that it belongs to a different universality class, even though it satisfies the same scaling relations between critical exponents established in the yielding transition of sheared amorphous solids. Our work provides a fluidisation mechanism through active force generation that could be relevant in biological tissues.
