IBM researchers use graphene to stimulate the body's immune response

May 17, 2017

IBM recently announced that its researchers have identified a new way to trigger the body's immune response by using polymer-coated graphene sheets.

IBM uses graphene to boost the immune system image

In some medical treatments, it is crucial to target specific places in the body; To that end, scientists have developed techniques where drug molecules are attached directly to the surface of a nanomaterial, such as graphene sheets. Combining the nanomaterial and the drug molecules, these "nanotherapies" could help clinicians treat tumors, for example, by transporting the drugs directly to the tumors, where they can be released onto the cancer cells to help fight the disease.

Zenyatta Ventures announced successful testing of its material in Si-G anodes for Li-ion batteries

May 17, 2017

Zenyatta Ventures has announced the successful testing of its graphene oxide material by a U.S. based advanced materials company developing silicon-graphene anodes for the next generation of lithium-ion batteries.

Zenyatta stated that preliminary results showed the ease of processing with its graphene oxide and similar electrochemical performance compared to the control material that is currently being used by the U.S. company. Zenyatta's high-purity graphite was recently converted to graphene oxide and then sent to the U.S. collaborator for testing as an advanced nano-material in a new Lithium-ion battery.

MIT team helps graphene take on exotic electronic qualities

May 15, 2017

MIT researchers have found that a flake of graphene, when brought in close proximity with two superconducting materials, can "borrow" some of those materials' superconducting qualities. When graphene is sandwiched between superconductors, its electronic state changes dramatically, even at its center.

Sandwiched between superconductors, graphene adopts exotic electronic states

The researchers showed that graphene's electrons, formerly behaving as individual particles, instead pair up in "Andreev states"—a fundamental electronic configuration that allows a conventional, non-superconducting material to carry a "supercurrent," an electric current that flows without dissipating energy.

China-based company completes biomass graphene production line

May 11, 2017

The China-based Shandong Longju New Materials Technology announced that it has completed the installation and commissioning of a pilot biomass graphene production line and has put it into operation.

According to the reports, the facility uses corncob waste to make few-layer biomass graphene (citing Ningbo Institute of Materials Technology of the Chinese Academy of Sciences' test results). The production line’s annual capacity is said to be five tons and is expected to increase to 300 tons.

Researchers develop a new way to produce single-layer graphene from Ethene

May 07, 2017

An international team of scientists has designed a new way to produce single-layer graphene from a simple precursor: ethene (also known as ethylene) - the smallest alkene molecule, which contains just two atoms of carbon.

Ethene to graphene route image

Heating the ethene to a temperature of slightly more than 700 degrees Celsius, the researchers reportedly produced pure layers of graphene on a rhodium catalyst substrate. The gradual heating and higher temperature overcame challenges that came up in earlier efforts to produce graphene directly from hydrocarbon precursors.

Exeter researchers demonstrate a thermoacoustics graphene-based speaker chip

May 07, 2017

Researchers from the University of Exeter developed a new chip that combines a thermoacoustics graphene-based speaker, amplifier and graphic equalizer. A thermoacoustics speaker creates sounds by heating and cooling the thin graphene membrane rapidly by an alternating electric current - and the transfer of the thermal variation to the air causes it to expand and contract, thereby generating sound waves.

Graphene-membrane speaker chip (Exeter, 2017)

Thermoaccoustic speakers based on graphene has been demonstrated before, but the Exeter researchers are the first to embed such a speaker, an amplifier and a graphic equalizer on a millimetre-sized device. The researchers see possible applications in ultrasound imaging, telecommunication and maybe even intelligent bandages that monitor and treat patients directly.

Graphenea and U of Hamburg team upscale high-quality graphene devices

May 07, 2017

Researchers from the University of Hamburg and Graphenea have succeeded in upscaling high-quality graphene devices to the 100-micron scale and beyond. By perfecting CVD graphene production, transfer and patterning processes, the team managed to observe the quantum Hall effect in devices longer than 100 micrometers, with electronic properties on par with micromechanically exfoliated devices.

Graphenea upscales graphene devices

The work started from graphene grown by chemical vapor deposition (CVD) on a copper substrate. Since graphene on metal is not useful for applications in electronics, the material is usually transferred onto another substrate before use. The transfer process has proven to be a challenge, in many cases leading to cracks, defects, and chemical impurities that reduce the quality of the graphene.