Self-Folded Three-Dimensional Graphene with a Tunable Shape and Conductivity
Autor: | Calum S. Henderson, Toichiro Goto, Shengnan Wang, Yuko Ueno, Yoshiaki Kashimura, Hiroshi Nakashima, Tetsuhiko Teshima, Makoto Takamura, Yui Ogawa, Satoshi Sasaki |
---|---|
Rok vydání: | 2018 |
Předmět: |
Materials science
Graphene Mechanical Engineering Stacking Bioengineering Nanotechnology 02 engineering and technology General Chemistry Conductivity 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Flexible electronics law.invention Template law Molecule General Materials Science 0210 nano-technology Microscale chemistry |
Zdroj: | Nano letters. 19(1) |
ISSN: | 1530-6992 |
Popis: | Three-dimensional (3D) graphene architectures are of great interest as applications in flexible electronics and biointerfaces. In this study, we demonstrate the facile formation of predetermined 3D polymeric microstructures simply by transferring monolayer graphene. The graphene adheres to the surface of polymeric films via noncovalent π-π stacking bonding and induces a sloped internal strain, leading to the self-rolling of 3D microscale architectures. Micropatterns and varied thicknesses of the 2D films prior to the self-rolling allows for control over the resulting 3D geometries. The strain then present on the hexagonal unit cell of the graphene produces a nonlinear electrical conductivity across the device. The driving force behind the self-folding process arises from the reconfiguration of the molecules within the crystalline materials. We believe that this effective and versatile way of realizing a 3D graphene structure is potentially applicable to alternative 2D layered materials as well as other flexible polymeric templates. |
Databáze: | OpenAIRE |
Externí odkaz: |