Hatwalne Yashodhan, Ramaswamy Sriram, Rao Madan, Simha R Aditi
Raman Research Institute, C.V. Raman Avenue, Bangalore 560 080, India.
Phys Rev Lett. 2004 Mar 19;92(11):118101. doi: 10.1103/PhysRevLett.92.118101.
We study the interplay of activity, order, and flow through a set of coarse-grained equations governing the hydrodynamic velocity, concentration, and stress fields in a suspension of active, energy-dissipating particles. We make several predictions for the rheology of such systems, which can be tested on bacterial suspensions, cell extracts with motors and filaments, or artificial machines in a fluid. The phenomena of cytoplasmic streaming, elastotaxis, and active mechanosensing find natural explanations within our model.
我们通过一组粗粒化方程来研究活性、有序性和流动之间的相互作用，这些方程描述了活性、耗能颗粒悬浮液中的流体动力学速度、浓度和应力场。我们对这类系统的流变学做出了几个预测，这些预测可以在细菌悬浮液、含有马达和细丝的细胞提取物或流体中的人造机器上进行测试。细胞质流动、弹性趋化和主动机械传感现象在我们的模型中有自然的解释。
