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应用Saupe形式的弹性自由能 ,研究了简单的扭曲 ,展曲和弯曲形变对相变的影响 .结果表明 ,弹性形变可以产生从各向同性相至双轴丝状相的一级相变 ,对螺状相液晶 ,当系统手征性增加并超过某一临界值时 ,一级相变可过渡到二级相变
The Saupe-type elastic free energy is used to study the influence of simple twist, flexure and bending deformation on the phase transition. The results show that the elastic deformation can produce the first-order phase transition from the isotropic phase to the biaxial filament phase. When the system chirality increases and exceeds a certain critical value, the first-order phase transition can transition to the second-order phase transition