title: Super-elastic graphene ripples for flexible strain sensors.
abstract: In this study, we report a buckling approach for graphene and graphene ribbons on stretchable elastomeric substrates. Stretched polydimethylsiloxane (PDMS) films with different prestrains were used to receive the transferred graphene, and nanoscale periodical buckling of graphene was spontaneously formed after strain release. The morphology and periodicity of the as-formed graphene ripples are dependent strongly on their original shapes and substrates' prestrains. Regular periodicity of the ripples preferred to form for narrow graphene ribbons, and both the amplitude and periodicity are reduced with the increase of prestrain on PDMS. The graphene ripples have the ability to afford large strain deformation, thus making it ideal for flexible electronic applications. It was demonstrated that both graphene ribbon and nanographene film ripples could be used for strain sensors, and their resistance changes upon different strains were studied. This simple and controllable process of buckled graphene provides a feasible fabrication for graphene flexible electronic devices and strain sensors due to its novel mechanical and electrical properties.
authors: Nanoscale Physics and Device Laboratory, Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science, Beijing 100190, China.
authors: Yi
authors: Y
authors: Wang
authors: Rong
authors: R
authors: Yang
authors: Zhiwen
authors: Z
authors: Shi
authors: Lianchang
authors: L
authors: Zhang
authors: Dongxia
authors: D
authors: Shi
authors: Enge
authors: E
authors: Wang
authors: Guangyu
authors: G
authors: Zhang
mesh_terms: D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D055119:Elastic Modulus; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D008365:Manometry / Q000295:instrumentation*; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D014159:Transducers
chemical_list: D004129:Dimethylpolysiloxanes; D008567:Membranes, Artificial; C013830:baysilon; D006108:Graphite