Measurement of surface conductivity of graphene at W-band

被引：1

作者：

Majeed, Farhat ^{[1
]}

Fickenscher, Thomas ^{[2
]}

Shahpari, Morteza ^{[3
,4
]}

Thiel, David V. ^{[1
]}

机构：

[1] Griffith Univ, Sch Engn & Built Environm, Nathan, Qld, Australia

[2] Helmut Schmidt Univ, Dept Elect Engn, Hamburg, Germany

[3] Griffith Univ, Cities Res Inst, Gold Coast, Qld, Australia

[4] Griffith Univ, Sch Engn & Built Environm, Gold Coast, Qld, Australia

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2019年 / 61卷 / 07期

关键词：

graphene; conductivity measurement; scattering parameters; transmission lines; transfer matrix; CONDUCTANCE; ABSORBER;

D O I：

10.1002/mop.31826

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Graphene has excellent mechanical and conducting properties. Scattering parameter measurements were made in W-band (75-110 GHz) on 25 mm x 25 mm monolayer graphene film printed on polyethylene terephthalate (PET) substrate. From near field measurements using WR10 horn antennas the surface conductivity was de-embedded after calibrating the s(11) data against the reflection of a copper plate of same cross-sectional dimensions as the DUT and calibrating the s(21) data against horn-to-horn measurements. A monolayer graphene strip (20 mm x 2 mm) printed on PET substrate (25 mm x 25 mm) showed higher reflection when it was aligned with the E field of the incident radiation (as compared to H field alignment). The surface conductivity of graphene was de-embedded from s(11) measurements using standard transmission line theory and from s(21) measurements using cascade matrix theory(.) The measured real part of the surface conductivity of graphene ranges between 0.7 and 1.8 mS/sq.

引用

页码：1747 / 1754

页数：8

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