Sakhardande Raunak, Stanojeviea Stefan, Baskaran Arvind, Baskaran Aparna, Hagan Michael F, Chakraborty Bulbul
Martin Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02453, USA.
Phys Rev E. 2017 Jul;96(1-1):012704. doi: 10.1103/PhysRevE.96.012704. Epub 2017 Jul 13.
We present a Ginzburg-Landau theory of microphase separation in a bidisperse chiral membrane consisting of rods of opposite handedness. This model system undergoes a phase transition from an equilibrium state where the two components are completely phase separated to a state composed of microdomains of a finite size comparable to the twist penetration depth. Characterizing the phenomenology using linear stability analysis and numerical studies, we trace the origin of the discontinuous change in microdomain size that occurs during this phase transition to a competition between the cost of creating an interface and the gain in twist energy for small microdomains in which the twist penetrates deep into the center of the domain.
我们提出了一种由具有相反手性的棒状分子组成的双分散手性膜中的微相分离的金兹堡-朗道理论。该模型系统经历了一个相变，从两种组分完全相分离的平衡态转变为由尺寸有限的微区组成的状态，这些微区的尺寸与扭曲穿透深度相当。通过线性稳定性分析和数值研究来表征这一现象学，我们追踪了在这个相变过程中微区尺寸的不连续变化的起源，这一起源是在形成界面的成本与小尺寸微区中扭曲能量的增益之间的竞争，在小尺寸微区中扭曲深入到微区中心。
