• 文献标题:   Broadband non-contact characterization of epitaxial graphene by near-field microwave microscopy
  • 文献类型:   Article
  • 作  者:   GU SJ, ZHOU X, LIN TJ, HAPPY H, LASRI T
  • 作者关键词:   nearfield microwave microscopy, evanescent microwave, interferometer, local characterization, graphene
  • 出版物名称:   NANOTECHNOLOGY
  • ISSN:   0957-4484 EI 1361-6528
  • 通讯作者地址:   Univ Valenciennes
  • 被引频次:   4
  • DOI:   10.1088/1361-6528/aa7a36
  • 出版年:   2017

▎ 摘  要

In this paper, a broadband non-destructive and non-contact local characterization of graphene fabricated by epitaxial method on silicon carbide is demonstrated by using an interferometerbased near-field microwave microscope. First, a method has been proposed to extract the dielectric properties of silicon carbide, and finally, the graphene flake has been characterized as a resistance (similar to 20 k Omega) and a small inductance (360 pH) in the frequency band (2-18 GHz). The advantage of the proposed method is that there is no need to fabricate electrodes on the sample surface for the characterization. The instrument proposed is a good candidate for the local characterization of 2D materials.