Strain analysis of a chiral smectic-A elastomer.

摘要: We present a detailed analysis of the molecular packing strained liquid crystal elastomer composed chiral mesogens in smectic-A phase. X-ray diffraction patterns collected over range orientations with respect to x-ray beam were used reconstruct three-dimensional scattering intensity as function tensile strain. show that smectic domain order is preserved these elastomers. Changes within given plane are due reorientation, and not loss, directions orthogonal applied Incorporating physical parameters elastomer, nonlinear elastic model presented describe rotation smectic-layered domains under strain, thus providing fundamental mechanical response unique materials.