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用偏振紫外-可见吸收及旋转样品二次谐波（SHG）测量法研究了半花菁／花生酸Y型交替多层膜中分子在基极平面内分布的各向异性．拉膜过程引发的半花菁分子在平面内沿提拉方向的规则取向具有镜面对称性，并随着拉膜速度或层数的增大而增强．
The anisotropy of the distribution of molecules in the basal plane of hemicyanine / arachidate Y - type multilayered films was investigated by polarized ultraviolet - visible absorption and rotating second harmonic (SHG) measurements. The half-cyanine molecules induced by the pulling process have mirror symmetry in the plane along the regular orientation of the pulling direction and increase with the increase of the drawing speed or number of layers.