graphene – Page 11 – TechConnect Briefs

Layered nanocomposites of plate-like particles and polymers

Zhang Y., Evans J.R.G., University College London, UK

Clay-polymer nanocomposites have emerged as a new class of material in recent years because a low addition of clay (<5 wt.%) in a polymer matrix causes significant improvement in material properties. They represent the low [...]

Opening of a tunable bandgap in graphene via oxygen plasma treatment: A building block for graphene-based electronics

Nourbakhsh A., Cantoro M., Klekachev A., De Gendt S., Sels B., IMEC, BE

The results of experiments devoted to the modification of the pristine electronic properties of single-layer graphene by means of an oxygen plasma will be illustrated. Electrical characterization and photoluminescence measurements are carried out to investigate [...]

Analysis of Graphene, Molecular Wires and Inorganic Materials for Nanoelectronics and Low Power Integrated Circuits

Lyshevski S.E., Rochester Institute of Technology, US

This paper studies some emerging and prospective materials and possible solutions for envisioned nanoscaled microelectronic devices. To assess and evaluate the performance of envisioned scaled microelectronic devices, one applies quantum mechanics and other advanced methods. [...]

Computer Simulation of Graphene-Metal Composite Induced by Radiation

Ilyin A.M., Beall G.W., Texas State University, US

In this paper we have submitted some results of computer simulation and calculations based on the density functional theory of the energy and structural characteristics of some possible kinds of stable complex structural defects in [...]

Reinforcing Kevlar by Thin Outer Graphene Shell

Martirosyan K.S., Zyskin M., University of Texas at Brownsville, US

The development of advanced method to reinforce Kevlar fibers by using 2D graphene structures is reported. This method is based on the ultrasonic-assisted swelling of the polymeric fiber in a graphene suspension with the use [...]

Tearing Graphene

Moura M.J.B., Marder M., University of Texas at Austin, US

Experiments on free standing graphene can expose the graphene sheets to out-of-plane forces. An example of that is the back-gate voltage experimental setup. Here we show that out-of-plane forces can cause free standing graphene to [...]

Graphite Layer Nano-composites with Polyurethane Matrix

Czajka M., Shanks R.A., RMIT University, AU

The aim was to prepare expanded graphite oxide (GO, Graftech Inc.) and disperse it in a polyol (poly(oxypropylene glyceride), Dow Chemicals) using ultrasonication. The dispersion was polymerized and crosslinked with methane 4,4’-diphenyldiisocyanate to form a [...]

Introduction to Raman Spectroscopy as a Characterization Tool for Carbon Nanotubes, Graphene, and other Carbon Nanostructures

Wall M., Hodkiewicz J., Thermo Fisher Scientific, US

While there have been many publications produced in which Raman spectroscopy has been used to characterize various aspects of carbon nanostructures, there have been few works published which provide an overview of what the technique [...]

Nanoscale Graphene Lithography Using an Atomic Force Microscope

Kumar K., Yang E.H., Stevens Institute of Technology, US

In this work, we study Atomic Force Microscope local oxidation lithography to precisely fabricate nanometer-scale structures from graphene, a recently discovered material with exceptional electrical properties. We have systematically studied oxidation parameters (electric field, humidity, [...]

Critical currents in graphene ribbon Josephson junctions

Gabrielli P.G., ENEA, IT

Most of the remarkable transport properties of graphene have to do with its particular band structure at low energies: the undoped system has a finite number of Fermi points, placed at the corner of the [...]