Graphene segregated on Ni surfaces and transferred to insulators

Large-scale graphitic thin films synthesized on Ni and transferred to insulators: Structural and electronic properties

insulators: Structural and electronic properties Helin Cao, Qingkai Yu, Robert Colby, Deepak Pandey, C. S. Park, Jie Lian, Dmitry Zemlyanov, Isaac Childres, Vladimir Drachev, Eric A. Stach, Muhammad Hussain, Hao Li, Steven S. Pei, and Yong P. Chen Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana ...

Surface Microscopy Characterizations of Large Size Graphene films Grown by Surface Segregation on Ni and Transferred to Si/SiO2 Substrate

We report surface microscopy characterizations of large size graphene films (up to mm) grown on polycrystalline Ni foils and transferred to Si/SiO2. Wrinkles in such films are studied by both atomic force microscopy (AFM) and scanning tunneling microscopy (STM). Local graphitic lattice structures of the films are imaged with atomic-resolution STM and compared with those of the highly ordered py...

Water on graphene surfaces.

In this paper, we summarize the main results obtained in our group about the behavior of water confined inside or close to different graphene surfaces by means of molecular dynamics simulations. These include the inside and outside of carbon nanotubes, and the confinement inside a slit pore or a single graphene sheet. We paid special attention to some thermodynamical (binding energies), structu...

Topological insulators: The surface surfaces.

Two-dimensional carbon topological insulators superior to graphene

Graphene was the first material predicted to realize a topological insulator (TI), but unfortunately the gap is unobservably small due to carbon's weak spin-orbital coupling (SOC). Based on first-principles calculations, we propose a stable sp-sp(2) hybrid carbon network as a graphene analog whose electronic band structures in proximity of the Fermi level are characterized by Dirac cones. We de...