Microwave absorption and radiation from large-area multilayer CVD graphene

Bian Wu, Hatice M. Tuncer, Anestis Katsounaros, Weiping Wu, Matthew T. Cole, Kai Ying, Lianhong Zhang, William I. Milne, Yang Hao

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

Here we experimentally study the microwave absorption and near-field radiation behavior of monolayer and few-layer, large-area CVD graphene in the C and X bands. Artificial stacking of CVD graphene reduces the sheet resistance, as verified by non-contact microwave cavity measurements and four-probe DC resistivity. The multilayer stacked graphene exhibits increased absorption determined by the total sheet resistance. The underlying mechanism could enable us to apply nanoscale graphene sheets as optically transparent radar absorbers. Near-field radiation measurements show that our present few-layer graphene patches with sheet resistance more than 600 Ω/sq exhibit no distinctive microwave resonance and radiate less electromagnetic power with increasing layers; however, our theoretical prediction suggests that for samples to be practical as microwave antennas, doped multilayer graphene with sheet resistance less than 10 Ω/sq is required.

Original languageEnglish
Pages (from-to)814-822
Number of pages9
JournalCarbon
Volume77
DOIs
Publication statusPublished - 2014

ASJC Scopus subject areas

  • Chemistry(all)

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