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Macroscopic single‐domain graphene sheet on Ni(111) |
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| Authors: | Genki Odahara Shigeki Otani Chuhei Oshima Masahiko Suzuki Tsuneo Yasue Takanori Koshikawa |
| Institution: | 1. Department of Applied Physics, Waseda University, 3‐4‐1 Okubo, Shinjuku‐ku, Tokyo 169‐0072, Japan;2. National Institute for Materials Science, 1‐1 Namiki, Tsukuba‐shi, Ibaraki 305‐0044, Japan;3. Fundamental Electronics Research Institute, Academic Frontier Promotion Center, Osaka Electro‐Communication University, 18‐8 Hatsu‐cho, Neyagawa, Osaka 572‐8530, Japan |
| Abstract: | We observed in situ growth of a single graphene sheet on Ni(111) by low‐energy electron microscopy. The sheet was grown epitaxially beyond the steps on the substrate. The crystalline shapes of graphene islands were clearly seen; the straight edges of the island are crossed at either 60 or 120°, and the linear edges shifted perpendicular to the edge keeping the equilibrium shape. Graphene islands were united to form a single sheet without any grain boundaries and any wrinkles. The Ni substrate of several centimeters in size was covered with a single‐domain graphene sheet. Copyright © 2011 John Wiley & Sons, Ltd. |
| Keywords: | graphene Ni(111) low energy electron microscopy |