Graphene exhibit unique electronic properties and mechanical flexibility that are beneficial for next-generation electronics. Crumpling graphene on elastomer sheets can engineer the properties depending on wavelength and orientation while maintaining structural integrity. However, tunability of nanotextures is limited because this process can only produce globally uniform features and graphene typically cracks in delaminated regions. By using adhesive fluoropolymer layers with different local thicknesses, we realized graphene nanowrinkles with variable spatial wavelengths on elastomer substrates. The wrinkle orientation could be repeatedly switched during stretch-release cycles without crack formation and delamination. We expect that this technique will offer a general means to engineer the local properties of graphene and other two-dimensional nanomaterials.
Reconfigurable Graphene Wrinkles with Area-Specific Structural Features
by Teri Odom | Jan 28, 2020 | Featured Research