Title:The Electrical Property of Large Few Layer Graphene Flakes Obtained by Microwaves Assisted Exfoliation of Expanded Graphite
Volume: 3
Issue: 2
Author(s): Azhar A. Pirzado, Guillaume Dalmas, Lam Nguyen-Dinh, Ivan Komissarov, Francois Le Normand and Izabela Janowska
Affiliation:
Keywords:
µ-waves, electrical properties, expanded graphite, few layer graphene, liquid exfoliation, resistance.
Abstract: Few layer graphene (FLG) was synthesized by -wave assisted exfoliation of expanded
graphite in toluene with an overall yield from c.a. 7% to 20%. A significant difference in the absorption
of -waves by the expanded graphite and toluene allowed a rapid heating of the medium. The
number of FLG sheets varies from 3 to 12, while the lateral size of the sheets exceeds few ms. The
obtained FLG exhibits very low resistance with average value of 1.6 k (500 minimum) which is
comparable to that of high quality graphenes synthesized by CVD methods, and lower than numbers of
exfoliated graphenes.