• 文献标题:   Laser-induced backward transfer of monolayer graphene
  • 文献类型:   Article
  • 作  者:   PRAEGER M, PAPAZOGLOU S, PESQUERA A, ZURUTUZA A, LEVI A, NAVEH D, ZERGIOTI I, EASON RW, MILLS B
  • 作者关键词:   femtosecond, laser, transfer, graphene, 2d material, dmd
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Univ Southampton
  • 被引频次:   0
  • DOI:   10.1016/j.apsusc.2020.147488
  • 出版年:   2020

▎ 摘  要

Laser-induced backward transfer (LIBT) has been demonstrated as a viable technique for precise, localised deposition of microscale regions of graphene. Single femtosecond laser pulses, shaped spatially using a digital micromirror device (DMD), were incident on a pre-prepared sample of graphene-coated nickel (the donor substrate) through a transparent glass receiver substrate. Under optimal laser exposure conditions, and in a low-pressure gas environment, circular regions of graphene with approximately 30 mu m diameter were successfully transferred from the donor to the receiver substrate as confirmed by optical and electron microscopy and Raman spectroscopy. The hypothesis that rapid thermal expansion of the nickel could drive the transfer process is explored and is shown to be plausible through some simple calculations. This LIBT technique for transfer of this archetypal 2D material has many potential applications in photonic and MEMS device fabrication.