Structure design and property of multiple-basis-element (MBE) alloys flexible films

A controlled wrinkled structure is a simple and effective approach to achieve unique properties and has been widely used in flexible materials. In this study, we reported a substrate prestrain method for fabricating wrinkle-structured Zr₅₂Ti₃₄Nb₁₄ multiple-basis-element (MBE) alloy films as biocompatible materials. Variations in the film thickness and substrate prestraining enabled a precise control of the amplitude and wavelength of the wrinkled structures, ranging from micrometers to nanometers. Moreover, owing to the flexibility of the wrinkled structures, the wrinkle-structure pattern could be adjusted by simply relaxing or further stretching of the substrate, leading to dynamically tunable transmittance and wetting behaviors. This result not only reveals Zr₅₂Ti₃₄Nb₁₄ MBE alloy films as a potential flexible material, but also provides a new structural design approach for other MBE alloy systems.