Wrinkling hierarchy in constrained thin sheets from suspended graphene to curtains.

摘要: The drive towards miniaturization in technology is demanding for increasingly thinner components, raising new mechanical challenges. Thin films are however unstable to boundary or substrate-induced compressive loads. Moderate compression results regular wrinkling while further confinement can lead crumpling. Regions of stress focusing be a hindrance, acting as nucleation points failure. Conversely, they exploited constructively tunable thin structures. For example, singular deformation dramatically affect the electronic properties graphene. Here, we show that sheets under spontaneously generate universal self-similar hierarchy wrinkles; from strained suspended graphene ordinary hanging curtains. We develop formalism based on "wrinklons", localized transition zone merging two wrinkles, building-blocks describe these wrinkled patterns. Our approach may find applications domains such graphene-based electronics, fuel cell technology, thin-film solar cells draping virtual reality.