A new method of making magnetic graphene that keeps its electronic properties

Researchers at the University of California at Riverside found a way to introduce magnetism in graphene while still preserving electronics properties. This may represent a significant step forward in the use of graphene in chips and electronics, since doping in the past induced magnetism but damaged graphene's electronic properties. this method can also be used in spintronics - chips that use electronic spin to store data.

The scientists explain they have overcome the problem by moving a graphene sheet very close to an electrical insulator with magnetic properties, since placing graphene on an insulating magnetic substrate can make the material ferromagnetic without disturbing its conductivity. The magnetic graphene is said to acquire new electronic properties, and so new quantum phenomena can take place.

Laminating plastics with graphene drastically changes their heat conduction

Researchers from University of California - Riverside (UCR) report that compressed graphene laminate on PET achieve a higher thermal conductivity compared to non-compressed laminates (for the same average flake size). This is due to better flake alignment.

Graphene has a very high thermal conductivity. At room temperature, a graphene sheet has thermal conductivity of 2000 W/mk to 50000 W/mk. When you place it on a substrate the conductivity is lowered substantially (to around 90 W/mk) - but it is still substantially better than that of plastics.

The NSF awards $1.7 million for the UCR to find new 2D Van Der Waals materials

The National Science Foundation (NSF) awarded a $1.7 million grant to the University of California, Riverside (UCR) towards a project that aims to characterize, analyze and synthesize a new class of ultra-thin (mostly 2D) film materials.

The project aims to develop Van Der Waals materials, and heterostructures implemented with such materials. The researchers aim to start with new synthesis techniques that will allow them to produce new materials, and then to investigate novel electrical, optical, and thermal phenomena in such materials and heterostructures.

UC Riverside: graphene oxide may pose health and environmental risks

Researchers from UC Riverside discovered that graphene oxide nanoparticles are very mobile in lakes or streams - which means that they can cause negative environmental and health impacts. It turns out that in surface waters (where there is more organic material and less hardness), GO particles remain stable. But in groundwater, they tend to become less stable.

The researchers say that it is important to continue and study what happens when graphene materials get into the ground or water. They say that their lab is one of the few labs in the US that studies the environmental impact of graphene oxide.

Coating copper with graphene strongly enhances heat conducting

Researchers from the University of California, Riverside and the University of Manchester discovered that coating copper with graphene (on both sides) strongly enhances the heat conducting properties of the copper.

The researchers say that coating the copper with one-layer graphene sheets increased heat conducting properties up to 24%. They say that this method could be used to built better hybrid copper – graphene interconnects for electronic chips. The researchers explain that the improvement is the result of changes in copper’s nano- and microstructure, not from graphene's action as an additional heat conducting channel.