The crumpling transition of active tethered membranes
The crumpling transition of active tethered membranes
复制标题
活性束缚膜的皱缩转变
DOI：
10.1039/d3sm00403a
复制
发表时间：
2023
期刊：
影响因子：
3.4
通讯作者：
Cacciuto, A.
中科院分区：
文献类型：
--
作者：
Gandikota, M. C.;Cacciuto, A.
我们对有源理想系留膜和自避免系留膜进行了数值模拟。具有弯曲相互作用的被动式理想膜在低温平坦相和高温皱缩相之间呈现出连续的皱缩转变。相反，即使在没有弯曲能的情况下，自避免膜在所有温度下都保持在延长(平坦)的状态。我们发现，主动涨落的引入产生的相行为与观察到的被动膜的相行为总体上是一致的。理想膜的相和转变的性质是不变的，活跃的波动可以通过简单的温度重新标度来解释。对于自回避膜，我们发现，即使在非常大的主动涨落存在的情况下，扩展的相也是不变的。
We perform numerical simulations of active ideal and self-avoiding tethered membranes. Passive ideal membranes with bending interactions are known to exhibit a continuous crumpling transition between a low temperature flat phase and a high temperature crumpled phase. Conversely, self-avoiding membranes remain in an extended (flat) phase for all temperatures even in the absence of a bending energy. We find that the introduction of active fluctuations into the system produces a phase behavior that is overall consistent with that observed for passive membranes. The phases and the nature of the transition for ideal membranes is unchanged and active fluctuations can be remarkably accounted for by a simple rescaling of the temperature. For the self-avoiding membrane, we find that the extended phase is preserved even in the presence of very large active fluctuations.