graphene – Page 2 – TechConnect Briefs

Graphene – Epoxy Composites for Anti-Corrosion Coatings

Bosnick K., Benhalima A., Chapleau N., Tefashe U.M., Bergren A.J., Yang Q., Champagne M.F., National Research Council Canada, CA

It is important to protect steel infrastructure, such as pipelines, from environmental corrosion. The primary method for this protection is by utilizing coatings, especially epoxy (EP) coatings. In recent years graphene has shown a great [...]

Lightweight, High Performance Polymer Composites for Modern Engineering Applications

Lynch-Branzoi J., Rutgers University, US

Modern engineering applications require a new class of materials that offer high performance and are also lightweight. Graphene-polymer matrix composites are promising structural materials due to the exceptional properties of graphene. Here, we demonstrate a [...]

Interfacial nanostructure dictates macro-structural properties of carbon-carbon composites

Singh M., Vander Wal R., Pennsylvania State University, US

Carbon-carbon composites, originally developed for aerospace applications, are materials that consist of a carbonaceous matrix with an embedded carbon filler providing the required reinforcement for thermal and mechanical stability. An important aspect of composites is [...]

Graphene-Metal Oxide based Nanocomposites for Supercapacitor Applications

Selvakumar D., Nagaraju P., Jayavel R., Anna University, IN

Two dimensional graphene-based nanocomposites have been synthesized through the modified Hummer’s method and chemical reduction process. Transition metal oxides were decorated on the graphene sheets by in-situ hydrothermal method. The composites were formed with graphene [...]

Electrochemically Exfoliated Graphene: Production and High Performances.

Wang J., Institute of Coal Chemistry, Chinese Academy of Sciences, CN

I’d like to present that graphene flakes have been produced with good properties and potentially used widely through electrochemical approaches. The electrochemically exfoliated graphene-based materials exhibit high performances in thermal management, electrocatalysis, supercapacitor, batteries and [...]

Graphene based core–shell additives for increasing the thermal conductivity of epoxy nanocomposites

Eksik O., Bartolucci S.F., Gupta T., Fard H., Tasciuca T.B., Koratkar N., Istanbul Technical University, TR

We studied novel technique to enhance the thermal conductivity of epoxy nanocomposites using graphene coated poly-methyl-methacrylate (PMMA) balls. PMMA balls with a diameter in the range of 200–300 nm were synthesized using suspension polymerization. These [...]

Graphene Synthesized in the Gas Phase: Research and Applications

Dato A., Harvey Mudd College, US

Pure and highly ordered graphene can be rapidly and continuously produced through the substrate-free gas-phase synthesis method. The single-step process involves sending precursors, such as ethanol and dimethyl ether, directly into atmospheric-pressure microwave-generated argon plasmas, [...]

Electric Field Assisted Placement of Carbon Nanotubes Using Sacrificial Graphene Electrodes

Engel M., Farmer D., Tirapu Azpiroz J., Seo J.-W.T., Kang J., Avouris P., Hersam M.C., Krupke R., Steiner M., IBM Research, BR

Here we detail a complete process flow to overcome the challenge of placement of carbon nanotubes on solid surfaces, limiting "bottom-up", large-scale integration in semiconductor process technology. To date most bottom up placement strategies are [...]

Effect of filler size in a graphene-anthracene carbon-carbon composite

Singh M., Vander Wal R., Pennsylvania State University, US

Characterizing carbon-carbon composite behavior across multiple length scales is essential to comprehending its macro-scale behavior. This work characterizes a graphene-anthracene composite from the nano- to the micron-scale with a variety of analytical techniques brought to [...]

Modeling and Simulation on Crossroad-Type Graphene-Resonator Accelerometer

Kwon O-K., Kang J-W, Korea National University of Transportation, KR

Accelerometers have multiple applications in industry and science, and can be used as sensors in a wide variety of devices. Highly sensitive accelerometers are components of inertial navigation systems for both aircraft and missiles, as [...]