A report, published in Nature, suggests graphene could be the most sought after material for designer electron devices. Electrons become massless Dirac fermions in graphene as a result of its electronic structure; they travel at the speed of light and are the result of Dirac points that form within the honeycomb lattice of carbon atoms. Graphene is one member of a class of Dirac materials that includes iron-based high-temperature semiconductors, and is show in research conducted by Gomes et al to be a fully tunable condensed-matter system.
Hot on the heels of the NanoBattery comes another contender for the crown of most astonishing graphene device this week. The latest thing to emerge from Hong Kong Polytechnic University, and challenger for the crown, is a graphene based battery that works on ambient heat. The device, which is still to be peer reviewed, works by capturing the thermal energy of ions in solution and converting them into electrical energy. As such it has the potential to provide a virtually never ending supply of electricity from heat sources such as the body, the sun and chemical and mechanical processes.
Roll Up Roll Up, in the world of graphene shares there can be no more apt an answer to the problem of investment choice than to invest in two companies and form a merger, or Roll-up. But, before you close all your trades to invest in this new company , I should just say that the roll up news of the week is not one of take over and consolidation but something all together more interesting; the furling of graphene into carbon nanotubes.
Graphene radio is the latest innovation to have emerged from the work of researchers from Universities in Romania, France and Greece .
Following on from the work of a team at Columbia University who announced to the world the first graphene radio in Dec 2011, the researchers from Europe have now presented evidence of RF demodulation by a single sheet of graphene embedded in a coplanar structure that suggests graphene responds well in the frequencies currently used in industrial, medical and scientific devices. Tested in a frequency range of 100Mhz to 25Ghz the graphene monolayer exhibited a response that suggests it could also be used for short range wireless communication such as Bluetooth.
A major hurdle in the race to manufacture a graphene computer chip has been cleared by scientists at the University of Manchester. The team of researchers lead by the Nobel Laureates Andre Geim and Konstantin Novoselov, have happily announced that the problem of graphene’s near super-conductivity has now been solved. The research finding is set to reignite the race for a graphene transistor and the race is now on to see which team will be the first to make the breakthrough device that will make graphene the new silicon.