Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials BioEngineering Research Centre (AMBER), and ∇School of Chemistry, Trinity College , Dublin 2, Ireland.
Nano Lett. 2015 Feb 11;15(2):857-63. doi: 10.1021/nl503460p. Epub 2015 Jan 9.
We have used elastomeric stamps with periodically varying adhesive properties to introduce structure and print folded graphene films. The structure of the induced folds is investigated with scanning probe techniques, high-resolution electron-microscopy, and tip-enhanced Raman spectroscopy. Furthermore, a finite element model is developed to show the fold formation process. Terahertz spectroscopy reveals induced anisotropy of carrier mobility along, and perpendicular to, the graphene folds. Graphene fold printing is a new technique which allows for significant modification of the properties of 2D materials without damaging or chemically modifying them.
我们使用具有周期性变化的黏附特性的弹性印章来引入结构并打印折叠的石墨烯薄膜。使用扫描探针技术、高分辨率电子显微镜和尖端增强拉曼光谱研究了所诱导褶皱的结构。此外，还开发了有限元模型来显示褶皱形成过程。太赫兹光谱揭示了沿石墨烯褶皱和垂直于石墨烯褶皱的载流子迁移率的诱导各向异性。石墨烯褶皱打印是一种新技术，它可以在不损坏或化学修饰二维材料的情况下显著改变它们的性质。
