Self‐assembled multilayer wrinkles on coated polymer surface

When coating different dielectrics on polymer surfaces, the surface morphology could be changed to wrinkles or cracks. The wrinkles or cracks are self‐formed during the process of heating and cooling. The presented experimental results show that the wrinkles can be self‐aligned between two nearest patterns. The direction of aligned wrinkles can be tuned to parallel, perpendicular and required degrees according to the different array‐based patterns. The number of wrinkles can also be controlled by changing the size of the patterns. In a limited range, a larger size pit has more wrinkles.