Drastically different morphological anisotropy was induced by linear photopolymerization in thin amorphous films of poly(vinyl 4-methoxy-cinnamate) (PVMC) and Langmuir-Blodgett films of 12-8(poly)diacetylene (PDA) deposited on glass substrates. Examination of these films by x-ray reflectivity reveals that the PVMC films became rough while PDA thin films became smooth along the direction of polarization of uv light. The elongated x-ray coherence area inherent to the reflectivity technique allowed quantitative determination of changes in the film morphology and structure.
Physical Review E
Cull, Brian; Shi, Yushan; Kumar, Satyendra; Schadt, Martin (1996). Anisotropic Surface Morphology of Poly(vinyl 4-methoxy-cinnamate) and 12-8(poly)diacetylene Thin Films Induced by Linear Photopolymerization. Physical Review E 53(4) 3777-3781. doi: 10.1103/PhysRevE.53.3777. Retrieved from https://oaks.kent.edu/article/anisotropic-surface-morphology-polyvinyl-4-methoxy-cinnamate-and-12-8polydiacetylene-thin