Controlled Folding of Graphene: GraFold Printing

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• 作者：Toby Hallam ; Amir Shakouri ; Emanuele Poliani ; Aidan P. Rooney ; Ivan Ivanov ; Alexis Potie ; Hayden K. Taylor ; Mischa Bonn ; Dmitry Turchinovich ; Sarah J. Haigh ; Janina Maultzsch ; Georg S. Duesberg
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：February 11, 2015
• 年：2015
• 卷：15
• 期：2
• 页码：857-863
• 全文大小：426K
• ISSN：1530-6992

文摘

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.