自变形主动壳的拓扑与形态
Topology and morphology of self-deforming active shells
摘要：
我们提出了一个通用的框架建模三维可变形壳的活性物质，捕获的定向动态的活性粒子和流体动力学相互作用的壳和周围环境。我们发现，自诱导流动的活性粒子和动态重塑的壳之间的串扰可以导致通过改变形式和幅度的主动应力是可调的构象。我们进一步证明和解释如何自诱导的拓扑缺陷的活性层可以直接壳的形态动力学。这些发现与了解器官发育过程中的形态变化以及能够自组织的生物启发材料的设计有关。
英文摘要：
We present a generic framework for modelling three-dimensional deformable shells of active matter that captures the orientational dynamics of the active particles and hydrodynamic interactions on the shell and with the surrounding environment. We find that the cross-talk between the self-induced flows of active particles and dynamic reshaping of the shell can result in conformations that are tunable by varying the form and magnitude of active stresses. We further demonstrate and explain how self-induced topological defects in the active layer can direct the morphodynamics of the shell. These findings are relevant to understanding morphological changes during organ development and the design of bio-inspired materials that are capable of self-organisation.
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