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Size selection of dispersed, exfoliated graphene flakes by controlled centrifugation
(2012)
Liquid exfoliation of graphene generally results in flakes with lateral size of one micron or less on average, too small for many applications. In this paper we describe a method to separate an existing dispersion with ...
Lateral Size Selection of Surfactant-Stabilised Graphene Flakes using Size Exclusion Chromatography
(2012)
Aqueous dispersions of graphene, stabilised by a surfactant, have been separated according to lateral flake size using size exclusion chromatography. Transition electron microscopy was used to characterise the flake size ...
Quantitative comparison of ultracentrifuged and diluted single walled nanotube
(2009)
We have carried out a quantitative comparison of the dispersion quality for ultracentrifuged and diluted surfactant-stabilised single walled nanotube dispersions. We have characterised these dispersions at a set concentration ...
Improved adhesive strength and toughness of polyvinyl acetate glue on addition of small quantities of graphene
(2013)
We have prepared composites of polyvinyl acetate (PVAc) reinforced with solution exfoliated graphene. We observe a 50% increase in stiffness and a 100% increase in tensile strength on addition of 0.1vol% graphene compared ...
Increased response/recovery lifetimes and reinforcement of Polyaniline Nanofiber Films using Carbon Nanotubes
(2012)
We have prepared high surface area, conductive, mechanically robust, responsive polyaniline-carbon nanotune composite films. These were produced by filtration from dilute dispersions of polyaniline nanofibers and single-walled ...
Oxygen radical functionalization of boron nitride nanosheets
(2012)
The covalent chemical functionalization of exfoliated hexagonal boron-nitride nanosheets (BNNSs) is achieved by the solution phase oxygen radical functionalization of boron atoms in the h-BN lattice. This involves a two-step ...
Development of stiff, strong, yet tough composites by the addition of solvent exfoliated graphene to polyurethane
(2010)
We have prepared graphene dispersions, stabilised by polyurethane in tetrahydrofuran and dimethylformamide. These dispersions can be drop-cast to produce free-standing composite films. The graphene mass fraction is determined ...
Nitrogen assisted etching of graphene layers in a scanning electron microscope
(2011)
We describe the controlled patterning of nanopores in graphene layers by using the low-energy (<10?keV) focused electron beam in a scanning electron microscope. Regular nanometer-sized holes can be fabricated with the ...