Visibility study of graphene multilayer structures

Guoquan Teo, Haomin Wang, Yihong Wu*, Zaibing Guo, Jun Zhang, Zhenhua Ni, Zexiang Shen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


The visibility of graphene sheets on different types of substrates has been investigated both theoretically and experimentally. Although single layer graphene is observable on various types of dielectrics under an optical microscope, it is invisible when it is placed directly on most of the semiconductor and metallic substrates. We show that coating of a resist layer with optimum thickness is an effective way to enhance the contrast of graphene on various types of substrates and makes single layer graphene visible on most semiconductor and metallic substrates. Experiments have been performed to verify the results on quartz and NiFe-coated Si substrates. The results obtained will be useful for fabricating graphene-based devices on various types of substrates for electronics, spintronics, and optoelectronics applications.

Original languageEnglish (US)
Article number124302
JournalJournal of Applied Physics
Issue number12
StatePublished - 2008
Externally publishedYes

Bibliographical note

Funding Information:
The work at the National University of Singapore was supported by -STAR under Grant No. R-398-000-020-305.

ASJC Scopus subject areas

  • General Physics and Astronomy


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