title: Precise Control of the Number of Layers of Graphene by Picosecond Laser Thinning.
abstract: The properties of graphene can vary as a function of the number of layers (NOL). Controlling the NOL in large area graphene is still challenging. In this work, we demonstrate a picosecond (ps) laser thinning removal of graphene layers from multi-layered graphene to obtain desired NOL when appropriate pulse threshold energy is adopted. The thinning process is conducted in atmosphere without any coating and it is applicable for graphene films on arbitrary substrates. This method provides many advantages such as one-step process, non-contact operation, substrate and environment-friendly, and patternable, which will enable its potential applications in the manufacturing of graphene-based electronic devices.
authors.affiliation: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Lin
authors.affiliation: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Ye
authors.affiliation: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Jinpeng
authors.initials: J
authors.lastname: Han
authors.affiliation: 1] School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China [2] State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Chen
authors.affiliation: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Peixun
authors.initials: P
authors.lastname: Fan
authors.affiliation: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Hongjun
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Tsinghua National Laboratory for Information Science and Technology (TNList), Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Xie
authors.affiliation: 1] School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China [2] State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Zhu
authors.affiliation: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Minlin
authors.initials: M
authors.lastname: Zhong