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首页> 外文期刊>The European physical journal, E. Soft matter >Generic instabilities in a fluid membrane coupled to a thin layer of ordered active polar fluid
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Generic instabilities in a fluid membrane coupled to a thin layer of ordered active polar fluid

机译:与有序活性极性流体薄层耦合的液膜中的一般不稳定性

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摘要

We develop an effective two-dimensional coarse-grained description for the coupled system of a planar fluid membrane anchored to a thin layer of polar ordered active fluid below. The macroscopic orientation of the active fluid layer is assumed to be perpendicular to the attached membrane. We demonstrate that activity or nonequilibrium drive of the active fluid makes such a system generically linearly unstable for either signature of a model parameter Δ μ that characterises the strength of activity. Depending upon boundary conditions and within a range of the model parameters, underdamped propagating waves may be present in our model. We discuss the phenomenological significance of our results. Graphical abstract: [Figure not available: see fulltext.]
机译:我们为锚定在下面极性有序活性流体薄层上的平面流体膜的耦合系统开发了有效的二维粗粒度描述。假定活性流体层的宏观取向垂直于附着的膜。我们证明活动性或活动性流体的非平衡驱动使这样的系统对于表征活动强度的模型参数Δμ的任一签名通常线性不稳定。根据边界条件和模型参数的范围内,我们的模型中可能存在阻尼不足的传播波。我们讨论了结果的现象学意义。图形摘要:[该图不可用:请参见全文。]

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