Thin Films: Ridge Localizations and Networks in Thin Films Compressed by the Incremental Release of a Large Equi‐biaxial Pre‐stretch in the Substrate (Adv. Mater. 24/2014)

Two-dimensional ridge structures are induced by equibiaxial compression with a large equi-biaxial pre-stretch in a thin film, using a microfluidics technique. Whereas wrinkles tend to be uniformly distributed, the ridges are localized. The wrinkle-to-ridge transition and the evolution of a ridge network are studied by experiments and numerical simulations on page 4061 by A. Takei and co-workers.