Graphene coating may solve the glass corrosion problem

Researchers at the Center for Multidimensional Carbon Materials (CMCM) within the Institute for Basic Science (IBS), have demonstrated a graphene coating that protects glass from corrosion. Their research has been said to hold potential for solving problems related to glass corrosion in several industries.

The IBS scientists grew graphene on copper and transferred either one or two atom-thick layers of graphene onto both sides of rectangular pieces of glass. The effectiveness of the graphene coating was evaluated by water immersion testing and observing the differences between uncoated and coated glass. After 120 days of immersion in water at 60 C, uncoated glass samples had significantly increased in surface roughness and defects, and reduced in fracture strength. In contrast, both the single and double layer graphene-coated glasses had essentially no change in both fracture strength and surface roughness.

Read the full story Posted: Oct 21,2016 - 1 comment

Researchers say that GNP reinforced thermoplastics are suitable for thermal sensor applications

Researchers from India's VIT University demonstrated the successful modification of thermoplastics with graphene nano-platelets (GNPs). The researchers present a study on the voltage and current phase uniformity as a function of temperature.

Thermal Sensor by Reinforced GNP Thermoplastics image

The researchers say that the investigation shows that the resulting reinforced thermoplastic material is promising for the development of thermal sensor for aerospace, automobile and health applications.

Read the full story Posted: Oct 21,2016

Saint Jean Carbon develops hybrid graphene sheets with superconductivity

Saint Jean Carbon, a carbon science company engaged in the exploration of natural graphite properties and related carbon products, has announced the development of hybrid graphene sheets with superconductivity. The work is the ongoing development of a number of different areas of research between Saint Jean and University of Western Ontario.

The hybrid graphene nanosheets were created by depositing yttrium barium copper oxide (YBCO) superconductor particles and were developed by using the matrix-assisted pulsed laser evaporation (MAPLE) method. With increasing irradiation time, the amount of YBCO nanoparticles deposited on graphene is increased. In addition, the microstructures and elemental composition of YBCO nanoparticle deposited on graphene sheet by the MAPLE process were studied in terms of particle size and shape as a function of the deposition time/irradiation time. It is noted that the shape and size of the YBCO nanoparticles are more uniform with increasing the deposition time. When it increases to 2 hours, the average diameter of the spherical YBCO nanoparticles deposited on graphene sheets is around 50 ± 10 nm. This study demonstrates that MAPLE is a suitable process for depositing inorganic superconductor nanoparticles on graphene sheets without additional chemical agents.

Read the full story Posted: Oct 20,2016 - 1 comment

Russian team makes graphene with high stability under ozonation, with great potential for nanoelectronics

Scientists from Russia's National Research Nuclear University MEPhI have succeeded in producing graphene with a very high stability to ozonation using high-temperature sublimation of silicon carbide (SiC). The resulting graphene maintains contact with ozone for more than 10 minutes (while ordinary graphene loses its properties after only three or four minutes under such conditions). These results may hold great potential for the development of nanoelectronics.

To further examine the effects, scientists from Greece, France and Sweden were brought onto the team. Using computer modeling, the experts were able to figure out why SiC-graphene was more stable under the impact of aggressive oxygen free radicals. The new graphene's abnormal stability appeared to be associated with the low roughness of epitaxial graphene on SiC-substrate (epitaxy is a natural buildup of one crystalline material upon the surface of another).

Read the full story Posted: Oct 20,2016

Graphene-based transparent electrodes to promote stroke and epilepsy research

Scientists at the University of WisconsinMadison have looked into graphene-based microelectrocorticography (uECoG) arrays, used in neuroscience researcher, searching for possibilities to expand the use of the arrays in areas such as the research of stroke or epilepsy. Researchers at the University of Wisconsin-Milwaukee, Medtronic PLC Neuromodulation, the University of Washington, and Mahidol University in Bangkok, Thailand were also involved in this study.

The researchers see graphene as one of the most promising candidates for transparent neural electrodes, because the material has a UV to IR transparency of more than 90%, in addition to its high electrical and thermal conductivity, flexibility, and biocompatibility. That allows for simultaneous high-resolution imaging and optogenetic control, according to the team.

Read the full story Posted: Oct 20,2016

Grafoid enters agreement to sell its share in Braille Batteries

Mincom Capital has announced it has entered into a non-binding letter of intent with Grafoid to acquire Grafoid's 75% interest in Braille Holdings which owns Braille Battery. The proposed purchase price is $2 million USD, of which $1 million USD will be paid in cash and $1 million USD will be paid in shares issued to Grafoid from the treasury of Mincom. To fund this acquisition, Mincom plans to raise around $3 million USD.

Grafoid stated that "We see future market opportunities for high performing next generation batteries in the bus and truck manufacturing sectors and we see trends emerging in marine, aviation and medical equipment and other industrial sectors that might benefit from graphene-based energy solutions".

Read the full story Posted: Oct 19,2016

Applied Graphene Materials supplies graphene for next-gen fishing rods

Applied Graphene Materials has announced that it has supplied its graphene material for use in the production of a range of fishing rods, made by UK's Century Composites. Century has unveiled a new range of fishing rods containing the AGM's GNPs, sold under the brand Graphex.

Century has been manufacturing composite fishing rods in the UK for nearly 40 years, utilizing a range of reinforcing materials including glass, aramid, polyethylene and carbon fibers. Following a period of collaboration, AGM’s work with Century has resulted in the incorporation of graphene nanoplatelets into a high specification range of fishing rods.

Read the full story Posted: Oct 18,2016

Exposure Lights launches a graphene-enhanced 'action camera' light

Exposure Lights, a UK-based company focused on lighting solutions for cycling and outdoor activities, has been showing a graphene-based ‘action camera’ light called ‘Capture‘ at several cycle shows, to compliment GoPro type products primarily, but also as a useful multi purpose pocketable light.

The unit is enclosed in a graphene-enhanced polymer casing, where graphene acts as a heat conductor. It is designed to be waterproof, uses a standard GoPro type battery and has the standard GoPro style mount points. The specifications include a 600 Lumens output, 69g weight including battery, Long burn times with adjustable output and the target RSP is £99.99.

Read the full story Posted: Oct 13,2016

Versarien announces successful completion of graphene composites project with the NGI

Versarien has announced the successful completion of a grant funded project focused on graphene enhanced carbon fibre composites with the National Graphene Institute (NGI) at The University of Manchester.

Extensive trials of the graphene produced by Versarien’s subsidiary, 2-DTech, by an NGI team, in carbon fibre composite products, has demonstrated the benefit of adding graphene, particularly with regard to significantly enhancing the strength of the structure.

Read the full story Posted: Oct 13,2016

Penn State team controls momentum of electrons in graphene to advance valleytonics, a next-gen technology

Researchers at Pennsylvania State University have developed a device made of bilayer graphene, which provides experimental proof of the ability to control the momentum of electrons. The study is considered as a step forward in a new field of physics called valleytronics.

The team explains that current silicon-based transistor devices rely on the charge of electrons to turn the device on or off, but valleytronics looks into a new way to manipulate electrons based on other variables, called degrees of freedom. Charge is one degree of freedom. Electron spin is another, and the ability to build transistors based on spin, called spintronics, is still in the development stage. A third electronic degree of freedom is the valley state of electrons, which is based on their energy in relation to their momentum.

Read the full story Posted: Oct 12,2016