论文标题
两个温度的活性诱导液晶阶段在平衡中无法访问
Two-temperature activity induces liquid-crystal phases inaccessible in equilibrium
论文作者
论文摘要
在平衡硬杆流体以及各向异性软性粒子系统的有效硬杆描述中，从各向同性（i）阶段到列相（n）的跃迁在杆纵横比L/D = 3.70上方观察到了Onsager的预测。我们在一项分子动力学研究中检查了该标准的命运，该研究是，通过将一半颗粒耦合到与另一半上一半的温度相比，通过将一半颗粒耦合到热浴中，从而使活跃起来。我们表明，系统阶段分离并自组织成各种液晶阶段，这些阶段在各个纵横比中未在平衡中观察到。特别是，我们找到了L/d = 3的列相，而L/d = 2的近晶相高于关键活性。
In equilibrium hard-rod fluids, and in effective hard-rod descriptions of anisotropic soft-particle systems, the transition from the isotropic (I) phase to the nematic phase (N) is observed above the rod aspect ratio L/D = 3.70 as predicted by Onsager. We examine the fate of this criterion in a molecular dynamics study of a system of soft repulsive spherocylinders rendered active by coupling half the particles to a heat bath at a higher temperature than that imposed on the other half. We show that the system phase separates and self-organizes into various liquid-crystalline phases that are not observed in equilibrium for the respective aspect ratios. In particular, we find a nematic phase for L/D = 3 and a smectic phase for L/D = 2 above a critical activity.
