title: Wrinkle engineering: a new approach to massive graphene nanoribbon arrays.
abstract: Wrinkles are often formed on CVD-graphene in an uncontrollable way. By designing the surface morphology of growth substrate together with a suitable transfer technique, we are able to engineer the dimension, density, and orientation of wrinkles on transferred CVD-graphene. Such kind of wrinkle engineering is employed to fabricate highly aligned graphene nanoribbon (GNR) arrays by self-masked plasma-etching. Strictly consistent with the designed wrinkles, the density of GNR arrays varied from ∼0.5 to 5 GNRs/μm, and over 88% GNRs are less than 10 nm in width. Electrical transport measurements of these GNR-based FETs exhibit an on/off ratio of ∼30, suggesting an opened bandgap. Our wrinkle engineering approach allows very easily for a massive production of GNR arrays with bandgap-required widths, which opens a practical pathway for large-scale integrated graphene devices.
authors: Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, and College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, PR China.
authors: Zhonghuai
authors: Z
authors: Pan
authors: Nan
authors: N
authors: Liu
authors: Lei
authors: L
authors: Fu
authors: Zhongfan
authors: Z
authors: Liu