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Graphene enhanced plastics

Comparison of xGnP (graphene additive) to other nanocomposite additives.

Michigan state University is using the recent discovery that graphene is the strongest material ever and using graphene additives to make stiffer, stronger and lighter plastics.

The material – xGnP Exfoliated Graphite NanoPlatelets - can an either be used as an additive to plastics or by itself it can make a transformational change in the performance of many advanced electronic and energy devices,” Drzal said. “It can do so because it’s a nanoparticle with a unique shape made from environmentally benign carbon, and it can be made at a very reasonable cost.”

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Researchers at Northwestern University and Princeton University have created a new kind of polymer that, because of its extraordinary thermal and mechanical properties, could be used in everything from airplanes to solar cells.

The polymer, a nanocomposite that incorporates functionalized, exfoliated graphene sheets, even conducts electricity, and researchers hope to use that property to eventually create thermally stable, optically transparent conducting polymers.

Continue reading ‘By Adding Graphene, Researchers Create Superior Polymer’ »

Researchers at Northwestern University and Princeton University have created a new kind of polymer that, because of its extraordinary thermal and mechanical properties, could be used in everything from airplanes to solar cells.

The polymer, a nanocomposite that incorporates functionalized, exfoliated graphene sheets, even conducts electricity, and researchers hope to use that property to eventually create thermally stable, optically transparent conducting polymers.

The results of their research were published May 11 in the online version of Nature Nanotechnology.

Continue reading ‘By Adding Graphene, Researchers Create Superior Polymer’ »

Microcantilever actuators made from carbon nanotube (CNT)-polymer composites could dramatically improve the performance of microelectromechanical systems, according to scientists in Taiwan. The researchers from National Tsing Hua University have developed an easy to actuate material that rapidly suppresses unwanted oscillations thanks to a low quality factor.

“Lightweight and highly flexible CNT-composites provide fast electrothermo-actuation at low power,” Weileun Fang told nanotechweb.org. “Moving the actuator from its original position to its pull-in position can be employed to define two different states such as 0/1 or on/off, which suits many applications in communications and displays.”

The group’s nanocomposite device has a pull-in voltage of just 50?V for a full deflection of 560?µm. As Fang explains, this value is very low compared with existing microcantilevers, which can demand at least 500?V to achieve a similar displacement. The researchers believe that CNT-based field amplification is responsible for the low pull-in voltage.

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