STRUCTURE OF ACTIN BINDING PROTEIN 1 (ABP1) FROM SACCHAROMYCES CEREVISIAE

我们测量了摩擦聚酰亚胺薄膜的X射线反射率 用于液晶对准。都是机械摩擦的 用线偏振紫外光摩擦聚酰亚胺和聚酰亚胺. 检查过了。光学中液晶取向的机理 摩擦薄膜仍不清楚；建议的机制包括 由于各向异性收缩而形成的大规模波纹 进而与液晶相互作用，或重新定向 单个聚合物分子。机械摩擦过程产生了 聚酰亚胺薄膜表面的微槽，平均 与摩擦方向平行运行。这些凹槽导致 各向异性非镜面X射线反射率特征。分析了几个问题 从这些薄膜获得的镜面反射率将产生 机械粗糙度和机械粗糙度的比较 光学摩擦薄膜，平行和垂直于摩擦 方向。我们使用镜面反射率，与 我们的分辨率函数的各向异性特征来提取 薄膜表面粗糙度的各向异性。项目

We have measured the X-ray reflectivity of rubbed polyimide films used for liquid crystal alignment. Both mechanically rubbed polyimides and polyimides rubbed by linearly polarized UV light were examined. The mechanism for liquid crystal alignment in the optically rubbed films is still unclear; suggested mechanisms include either the formation of large-scale ripples due to anisotropic contraction which in turn interact with the liquid crystal, or reorientation of individual polymer molecules. The mechanical rubbing process creates microgrooves on the surface of the polyimide film, which on average run parallel to the rubbing direction. These grooves result in anisotropic off-specular X-ray reflectivity features. The analysis of the specular reflectivities obtained from these films will produce a comparison of the roughness associated with both mechanically and optically rubbed films, parallel and perpendicular to the rubbing direction. We use specular reflectivity, together with the anisotropic character of our resolution function to extract the anisotropy in the roughness along the film surface. ITEM