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Graphene: Mechanical Properties, Transfer, Manupulation2010Tunable Excitons in Biased Bilayer GrapheneConstanze Metzger, Sebastian Rmi, Mengkun Liu, Silvia V. Kusminskiy, Antonio H. Castro Neto, Anna K. Swan and Bennett B. Goldberg
Nano Lett., 2010, 10 (1), pp 6–10 Measurements on graphene exfoliated over a substrate prepatterned with shallow depressions demonstrate that graphene does not remain free-standing but instead adheres to the substrate despite the induced biaxial strain. The strain is homogeneous over the depression bottom as determined by Raman measurements. We find higher Raman shifts and Grneisen parameters of the phonons underlying the G and 2D bands under biaxial strain than previously reported. Interference modeling is used to determine the vertical position of the graphene and to calculate the optimum dielectric substrate stack for maximum Raman signal.
2009
Transfer Printing of Graphene Using Gold FilmLi Song, Lijie Ci, Wei Gao, and Pulickel M. AjayanACS Nano,2009 Highly oriented pyrolytic graphite (HOPG) is one of the best sources for high crystallinity graphene layers. Graphene, a popular material of recent times, is a single layer of graphite and a perfect 2D crystalline material with very high electron mobility and other interesting properties. Graphene has become an ideal object for both fundamental studies and future electronic applications. During last several years, there have been many efforts for exfoliating HOPG into multiple layers and even to obtain monolayer graphene, such as via chemical exfoliation, mechanical cleavage, and electrostatic force based separation. By improving the micromechanical cleavage technique, Novoselov et al. fixed graphite onto a substrate with glue and then used a tape to repeatedly peel off graphene.They found that individual single- and few-layer graphene could be successfully isolated from graphite by the repeated peeling-off process. Most recently, Liang et al. used a stamp with thousands of pillars to choose cut graphene islands from graphite. By applying voltage between graphite and the substrate, they found that the graphene islands could be exfoliated onto a silicon wafer by electrostatic force. However, there are still issues to be resolved in order to easily manipulate and transfer graphene on a large scale.
2008Transferring and Identification of Single- and Few-Layer Graphene on Arbitrary SubstratesAlfonso Reina, Hyungbin Son, Liying Jiao, Ben Fan, Mildred S. Dresselhaus, ZhongFan Liu, and Jing KongJ. Phys. Chem. C, 2008, 112 (46), pp 17741–17744
2007Printed Graphene CircuitsJian-Hao Chen, Masa Ishigami, Chaun Jang, Daniel R. Hines, Michael S. Fuhrer, and Ellen D. WilliamsAdvanced Materials 19, 3623 (2007)
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