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NM11.02.05 : Wrinkling of Graphene on Copper

11:45 AM–12:00 PM Apr 3, 2018 (America - Denver)

PCC North, 200 Level, Room 226 C

Description
Dogukan Senyildiz1 Omer Caylan1 Tarik Ogurtani2 Goknur Cambaz Buke1

1, TOBB University of Economics and Technology, Ankara, , Turkey
2, Middle East Technical University, Ankara, , Turkey

In this study, graphene is synthesized on Cu foil via CVD and characterized using optical microscope (OM), scanning electron microscope (SEM) and Atomic Force Microscope (AFM). Well-defined bundles of wrinkles are observed on the graphene covered copper after CVD process using atomic force microscopy (AFM). Wrinkle formation is attributed to the non-hydrostatic compression stresses induced on the graphene by the linear thermal expansion coefficient (LTEC) difference between graphene and copper during cooling. X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) studies are also performed in order to understand the effect of Cu surface orientation. (Supported by TUBITAK grant no 216M042.)

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