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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.

SUBMITTER: Lin Z

PROVIDER: S-EPMC4481519 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Precise Control of the Number of Layers of Graphene by Picosecond Laser Thinning.

Lin Zhe Z Ye Xiaohui X Han Jinpeng J Chen Qiao Q Fan Peixun P Zhang Hongjun H Xie Dan D Zhu Hongwei H Zhong Minlin M

Scientific reports 20150626

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 adva ...[more]

PMID: 26111758

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