title: Circular Graphene Platelets with Grain Size and Orientation Gradients Grown by Chemical Vapor Deposition.
abstract: Monolayer circular graphene platelets with a grain structure gradient in the radial direction are synthesized by chemical vapor deposition on immiscible W-Cu substrates. Because of the different interactions and growth behaviors of graphene on Cu and tungsten carbide, such substrates cause the formation of grain size and orientation gradients through the competition between Cu and tungsten carbide in graphene growth.
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Xing
authors.initials: X
authors.lastname: Xin
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.|School of Material Science and Engineering, University of Science and Technology of China, Anhui, 230026, P. R. China.
authors.forename: Zeyuan
authors.initials: Z
authors.lastname: Fei
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Teng
authors.initials: T
authors.lastname: Ma
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.|School of Material Science and Engineering, University of Science and Technology of China, Anhui, 230026, P. R. China.
authors.forename: Mao-Lin
authors.initials: ML
authors.lastname: Chen
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Chuan
authors.initials: C
authors.lastname: Xu
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.|School of Material Science and Engineering, University of Science and Technology of China, Anhui, 230026, P. R. China.
authors.forename: Xitang
authors.initials: X
authors.lastname: Qian
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Dong-Ming
authors.initials: DM
authors.lastname: Sun
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Xiu-Liang
authors.initials: XL
authors.lastname: Ma
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.|Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, 1001 Xueyuan Road, Shenzhen, 518055, China.
authors.forename: Hui-Ming
authors.initials: HM
authors.lastname: Cheng
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China.
authors.forename: Wencai
authors.initials: W
authors.lastname: Ren
keywords: 2D materials; chemical vapor deposition; grain structure gradients; graphene; substrates