标题： 可调玻璃态动力学在密集细胞组织模型中的研究 显示英文标题

标题： Tunable glassy dynamics in models of dense cellular tissue

摘要： 实验中对凝集细胞组织中玻璃态动力学的观察激发了大量计算和理论研究，以模拟其出现的集体行为。 几种几何细胞模型（包括顶点型模型）的物理性质的初步研究突显了动力学与温度之间异常的亚阿伦尼乌斯或“超强”标度关系。 在这里，我们表明二维Voronoi模型的动力学和材料特性与标准玻璃形成范式进一步偏离。 通过改变特征形状指数$p_0$，我们证明系统性质可以在表现出预期的玻璃形成行为（包括Stokes-Einstein-Sutherland关系的破坏和动态异质性的形成）和一种不寻常的区域之间进行调节，在这种区域中，粘度不会随着特征弛豫时间的增加而发散，动态异质性被强烈抑制。 我们的结果为进一步了解这类异常玻璃材料的基本特性提供了见解，并为设计具有预定玻璃态动力学的材料迈出了一步。 显示英文摘要

摘要： Observations of glassy dynamics in experiments on confluent cellular tissue have inspired a wealth of computational and theoretical research to model their emergent collective behavior. Initial studies of the physical properties of several geometric cell models, including vertex-type models, have highlighted anomalous sub-Arrhenius, or "ultra-strong," scaling of the dynamics with temperature. Here we show that the dynamics and material properties of the 2d Voronoi model deviate even further from the standard glassforming paradigm. By varying the characteristic shape index $p_0$, we demonstrate that the system properties can be tuned between displaying expected glassforming behavior, including the breakdown of the Stokes-Einstein-Sutherland relation and the formation of dynamical heterogeneities, and an unusual regime in which the viscosity does not diverge as the characteristic relaxation time increase and dynamical heterogeneities are strongly suppressed. Our results provide further insight into the fundamental properties of this class of anomalous glassy materials, and provide a step towards designing materials with predetermined glassy dynamics.