组织侵袭中的界面动力学
Interface dynamics in tissue invasion
AI总结：
该研究通过活组织的流体动力学描述，揭示组织侵袭界面的动力学特性，发现界面可产生依赖流体动力学尺度的涌现毛细表面张力，且主动力差会改变前沿传播机制，该张力在大驱动力低黏度时无法稳定界面。
AI中文摘要：
我们采用活组织的流体动力学描述，来描述具有不同本构特性的两种组织之间的分界面。以两种组织的内稳态压力差作为控制参数，我们表明该界面会产生一种依赖于流体动力学尺度的涌现毛细表面张力，且该张力使界面对大波长扰动非常稳定。以两种组织所受主动力差作为控制参数，我们不仅发现前沿传播机制从受驱动波转变为伯格斯波，还发现在足够大的驱动力和足够低的黏度下，该涌现表面张力不足以稳定界面。
英文摘要：
We rely on a hydrodynamic description of living tissues to describe the interface separating two of them with distinct constitutive properties. Using the difference in their homeostatic pressures as a control parameter, we show that the interface generates an emergent capillary surface tension that depends on the hydrodynamic scale, and that makes it very stable to large wavelengths perturbations. Using the difference of active forces the two tissues experience as a control parameter, we not only find that the front propagation mechanism shifts from the pushed wave to the Burgers wave, but we also find that the emergent surface tension is not sufficient to stabilize the interface at large enough drive and low enough viscosity.
