2006/01/17 by Raphaël Voituriez, R. Voituriez, Jean‐François Joanny +3 · 6 citations
Medicine · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Micro and Nano Robotics #Spaceflight effects on biology #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.96.028102
published as Phys. Rev. Lett. 96, 028102 (2006) · 4 pages, 1 figure
openalex publication_date 2006/01/17 · arxiv created 2008/07/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study theoretically the phase diagram of compressible active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations, we perform a linear stability analysis of the uniform states in the case of an infinite bidimensional active gel to obtain the dynamic phase diagram of active polar films. We predict, in particular, modulated flowing phases and a macroscopic phase separation at high activity. This qualitatively accounts for experimental observations of various active systems, such as actomyosin gels, microtubules and kinesins in vitro solutions, or swimming bacterial colonies.