@article{151e73667ee9499db4f9fc9b36e05afa,
title = "Dirac Fermion Kinetics in 3D Curved Graphene",
abstract = "3D integration of graphene has attracted attention for realizing carbon-based electronic devices. While the 3D integration can amplify various excellent properties of graphene, the influence of 3D curved surfaces on the fundamental physical properties of graphene has not been clarified. The electronic properties of 3D nanoporous graphene with a curvature radius down to 25–50 nm are systematically investigated and the ambipolar electronic states of Dirac fermions are essentially preserved in the 3D graphene nanoarchitectures, while the 3D curvature can effectively suppress the slope of the linear density of states of Dirac fermion near the Fermi level are demonstrated. Importantly, the 3D curvature can be utilized to tune the back-scattering-suppressed electrical transport of Dirac fermions and enhance both electron localization and electron–electron interaction. As a result, nanoscale curvature provides a new degree of freedom to manipulate 3D graphene electrical properties, which may pave a new way to design new 3D graphene devices with preserved 2D electronic properties and novel functionalities.",
keywords = "3D curved surfaces, 3D graphene, electrical transport, nanoporous materials",
author = "Yoichi Tanabe and Yoshikazu Ito and Katsuaki Sugawara and Mikito Koshino and Shojiro Kimura and Tomoya Naito and Isaac Johnson and Takashi Takahashi and Mingwei Chen",
note = "Funding Information: The authors thank Kazuyo Omura at the Institute for Material Research in Tohoku University for XPS measurements. This work was sponsored by JSPS Grant‐in‐Aid for Scientific Research on Innovative Areas “Discrete Geometric Analysis for Materials Design”: Grant Nos. 17H06460 (steering group) and JP20H04628; JSPS KAKENHI Grant Nos. JP15H05473, JP18K14174, JP17K14074, JP18K18986, JP18H01821, JP19K05195, and JP19J20543; World Premier International Research Center Initiative (WPI), MEXT, Japan; NIMS microstructural characterization platform as a program of “Nanotechnology Platform Project”, MEXT, Japan; Izumi Science and Technology Foundation; a cooperative program (Proposal No. 20G0002) of the CRDAM‐IMR, Tohoku University. This work was performed at High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University (Project No. 18H0205, 19H0204, 20H0011), the RIKEN iTHEMS program. M.C. was sponsored by the Whiting School of Engineering, Johns Hopkins University and National Science Foundation (NSF‐DMR‐1804320). Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",
year = "2020",
month = dec,
day = "3",
doi = "10.1002/adma.202005838",
language = "English",
volume = "32",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-Blackwell",
number = "48",
}