Broadband conductivity of graphene from DC to THz

Author

Rouhi, Nima ; Jain, Dheeraj ; Capdevila, Santiago ; Jofre, Lluis ; Brown, Elliott ; Burke, Peter J.

Author_Institution

Electr. Eng. & Comput. Sci., Univ. of California-Irvine, Irvine, CA, USA

fYear

2011

fDate

15-18 Aug. 2011

Firstpage

1205

Lastpage

1207

Abstract

In this paper for the first time we have studied the broadband sheet conductance of few-layer graphene on single-crystal quartz substrate. Few-layer graphene was grown on Nickel coated Si wafers and transferred to the target substrate, which is single crystal quartz. High frequency measurements at X-band (8-12 GHz), using WR90 waveguide were performed. In addition, sheet resistance at W-band (75-100 GHz) and 1 THz range is also measured providing a comprehensive frequency sheet conductance calculation. The sheet resistance is extracted form the transmission coefficient (S₂₁). The results present small variation at different frequency bands, and are quite stable within the bands.

Keywords

graphene; nickel; quartz; silicon; waveguides; C; Ni-Si; W-band; WR90 waveguide; X-band; broadband conductivity; broadband sheet conductance; few-layer graphene; frequency 75 GHz to 100 GHz; frequency 8 GHz to 12 GHz; high frequency measurements; nickel coated Si wafers; sheet resistance; single-crystal quartz substrate; transmission coefficient; Broadband communication; Electrical resistance measurement; Frequency measurement; Nickel; Permittivity measurement; Physics; Substrates; Few-Layer Graphene; Radio Frequency; S-parameters; Sheet Conductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on

Conference_Location

Portland, OR

ISSN

1944-9399

Print_ISBN

978-1-4577-1514-3

Electronic_ISBN

1944-9399

Type

conf

DOI

10.1109/NANO.2011.6144485

Filename

6144485