软离散介晶柱状组装体的螺旋屈曲
Helical buckling in columnar assemblies of soft discotic mesogens
摘要：
我们调查的手性介观结构的出现在一维流体中的堆叠dispersed颗粒组成，并证明螺旋起伏自发产生的内部弹性应力。这些螺旋构象的稳定性源于长程软排斥和纳米孔限制之间的相互作用，这是天然存在于柱状液晶中的。使用一个简单的平均场论的基础上微观考虑，我们确定了通用的缩放表达式的典型屈曲半径和螺旋间距的组成粒子的密度和相互作用潜力的函数。
英文摘要：
We investigate the emergence of chiral meso-structures in one-dimensional fluids consisting of stacked discotic particles and demonstrate that helical undulations are generated spontaneously from internal elastic stresses. The stability of these helical conformations arises from an interplay between long-ranged soft repulsions and nanopore confinement which is naturally present in columnar liquid crystals. Using a simple mean-field theory based on microscopic considerations we identify generic scaling expressions for the typical buckling radius and helical pitch as a function of the density and interaction potential of the constituent particles.
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