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引用次数: 0
摘要
研究了基片上相分离主动悬液中界面的粗化。在大长度和时间尺度上，我们证明了界面动力学属于Besse et al.讨论的|q|KPZ通用性类。[j].生物医学工程学报，2016,32(1):481 - 481。尽管存在长期的流体流动，这一点仍然成立。然而，在早期，或者对于足够小的系统，粗化指数与存在动量守恒流体时的粗化指数相同。令人惊讶的是，当衬底摩擦的影响可以忽略时，界面变得随机，超出了取决于界面张力的de Gennes-Taupin长度尺度。
We study the roughening of interfaces in phase-separated active suspensions on substrates. At both large length and time scales, we show that the interfacial dynamics belongs to the |q|KPZ universality class discussed in Besse et al. [Phys. Rev. Lett. 130, 187102 (2023)PRLTAO0031-900710.1103/PhysRevLett.130.187102]. This holds despite the presence of long-ranged fluid flows. At early times, however, or for sufficiently small systems, the roughening exponents are the same as those in the presence of a momentum-conserving fluid. Surprisingly, when the effect of substrate friction can be ignored, the interface becomes random beyond a de Gennes-Taupin length scale that depends on the interfacial tension.
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